libstdc++-v3/ChangeLog

   1 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
   4         std::tr1::unordered_map.
   5         * testsuite/util/testsuite_allocator.h: Likewise.
   6
   7         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
   8
   9         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
  10         __gnu_cxx::__alloc_traits for allocator construct function.
  11         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
  12
  13         * include/precompiled/stdc++.h: Include <span> for C++20.
  14         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
  15
  16 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
  17
  18         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
  19
  20 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
  21
  22         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
  23
  24         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
  25         recent standards.
  26         * doc/html/*: Regenerate.
  27
  28 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
  29
  30         * include/experimental/algorithm (experimental::sample): Qualify call
  31         to __sample correctly.
  32         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
  33         for algorithms that don't have parallel implementations.
  34
  35         * include/parallel/algobase.h (equal, lexicographical_compare): Add
  36         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
  37         constant evaluated.
  38         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
  39         Add _GLIBCXX20_CONSTEXPR.
  40
  41         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
  42         parallel mode.
  43         * testsuite/20_util/hash/84998.cc: Likewise.
  44         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
  45         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
  46         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
  47         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
  48         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
  49         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
  50         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
  51         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
  52         Likewise.
  53         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
  54         Likewise.
  55         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
  56         Likewise.
  57         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
  58         Likewise.
  59         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
  60         Likewise.
  61         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
  62         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
  63         * testsuite/25_algorithms/copy/86658.cc: Likewise.
  64         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
  65         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
  66         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
  67         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
  68
  69         * include/parallel/algo.h: Replace non-reserved names.
  70         * include/parallel/multiway_merge.h: Likewise.
  71         * include/parallel/multiway_mergesort.h: Likewise.
  72         * include/parallel/numericfwd.h: Likewise.
  73         * testsuite/17_intro/names.cc: Add RAI to test macros.
  74
  75 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
  76
  77         * include/debug/array: Add C++20 constexpr to comparison operators.
  78         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
  79         dg-error line numbers.
  80         * testsuite/23_containers/array/tuple_interface/
  81         tuple_element_debug_neg.cc: Likewise.
  82
  83 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
  84
  85         * include/experimental/internet: Include netinet/in.h if we have
  86         _GLIBCXX_HAVE_NETINET_IN_H defined.
  87
  88         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
  89         FreeBSD warning about lower advertised precision of tgammal.
  90         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
  91         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
  92         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
  93         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
  94         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
  95         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
  96         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
  97         * testsuite/tr1/5_numerical_facilities/special_functions/
  98         08_cyl_bessel_i/check_nan.cc: Likewise.
  99         * testsuite/tr1/5_numerical_facilities/special_functions/
 100         09_cyl_bessel_j/check_nan.cc: Likewise.
 101         * testuite/tr1/5_numerical_facilities/special_functions/
 102         10_cyl_bessel_k/check_nan.cc: Likewise.
 103         * testsuite/tr1/5_numerical_facilities/special_functions/
 104         11_cyl_neumann/check_nan.cc: Likewise.
 105         * testsuite/tr1/5_numerical_facilities/special_functions/
 106         21_sph_bessel/check_nan.cc: Likewise.
 107         * testsuite/tr1/5_numerical_facilities/special_functions/
 108         23_sph_neumann/check_nan.cc: Likewise.
 109
 110 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 111
 112         * include/std/span (span(element_type(&)[N]))
 113         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 114         Deduce array element type to allow safe const conversions (LWG 3255).
 115         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 116         remove_cv_t on arguments to __is_std_span and __is_std_array.
 117         * testsuite/23_containers/span/lwg3255.cc: New test.
 118
 119         PR libstdc++/77936
 120         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 121
 122 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 123
 124         * include/bits/stl_algo.h (merge): Fix documentation.
 125         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 126         (__check_sorted): Likewise and remove nested irreflexive check.
 127         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 128         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 129         (_Irreflexive_checker::_S_is_valid): Likewise.
 130         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 131         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 132         (__valid_range_aux): Add C++20 constexpr.
 133         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 134         Likewise and add std::is_constant_evaluated check.
 135         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 136         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 137         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 138         use latter.
 139         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 140         __builtin_is_contant_evaludated check..
 141         (__can_advance, __base): Add constexpr.
 142         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 143         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 144         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 145         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 146         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 147         std::less.
 148         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 149         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 150         lambda to be irreflexive.
 151
 152 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 153
 154         * configure: Regenerate.
 155
 156 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 157
 158         PR libstdc++/91910
 159         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 160         atomically and lock the mutex before accessing the sequence.
 161         (_Safe_local_iterator_base::_M_detach()): Likewise.
 162         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 163
 164 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 165
 166         * include/debug/array (to_array): Define for debug mode.
 167
 168         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
 169         piecewise construction constructor, assignment operators, and swap.
 170         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
 171         Add _GLIBCXX20_CONSTEXPR.
 172         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
 173         * testsuite/20_util/pair/constexpr_assign.cc: New test.
 174         * testsuite/20_util/pair/constexpr_swap.cc: New test.
 175
 176         * include/experimental/internet (operator==, operator<): Fix loop
 177         condition to avoid reading past the end of the array.
 178
 179         * include/std/array: Remove references to profile mode.
 180         * include/std/bitset: Likewise.
 181         * include/std/deque: Likewise.
 182         * include/std/forward_list: Likewise.
 183         * include/std/list: Likewise.
 184         * include/std/map: Likewise.
 185         * include/std/set: Likewise.
 186         * include/std/unordered_map: Likewise.
 187         * include/std/unordered_set: Likewise.
 188         * include/std/vector: Likewise.
 189         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
 190         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
 191
 192 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
 193
 194         * include/bits/regex.h
 195         (basic_regex::assign(const C*, size_t, flag_type)): Add default
 196         argument (LWG 3296).
 197         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
 198         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
 199
 200 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
 201
 202         * include/std/variant (variant::index()): Remove impossible case.
 203
 204         PR libstdc++/91871
 205         * testsuite/util/testsuite_hooks.h
 206         (conversion::iterator_to_const_iterator()): Do not return an invalid
 207         iterator. Test direct-initialization and direct-list-initialization
 208         as well as implicit conversion.
 209
 210 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
 211
 212         PR libstdc++/91788 (partial)
 213         * include/std/variant (variant::index()): Improve codegen for cases
 214         where conversion to size_t already works correctly.
 215
 216 2019-09-23  Andreas Schwab  <schwab@suse.de>
 217
 218         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 219
 220 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
 221
 222         PR libstdc++/91748
 223         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
 224         case.
 225         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
 226         access iterators.
 227
 228 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
 229
 230         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
 231         Fix syntax error.
 232
 233         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
 234         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
 235         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
 236         for C++2a and up.
 237
 238 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 239
 240         * include/std/type_traits (__do_common_type_impl): Implement
 241         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
 242         (basic_common_reference, common_reference, common_reference_t): Define
 243         for C++20.
 244         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
 245         test.
 246         * testsuite/20_util/common_reference/requirements/
 247         explicit_instantiation.cc: New test.
 248         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
 249         test.
 250
 251         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
 252         non-template overloads for each signed and unsigned integer type and
 253         char. Define deleted overload for bool (LWG 3266).
 254         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 255         * testsuite/20_util/to_chars/3.cc: New test.
 256         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 257
 258 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 259
 260         * acinclude.m4: Handle uclinux*.
 261         * configure: Regenerate.
 262         * configure.host: Handle uclinux*
 263
 264 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 265         Mickaël Guêné <mickael.guene@st.com>
 266
 267         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
 268         support.
 269
 270 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 271
 272         PR libstdc++/91711
 273         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
 274         0ul being a valid null pointer constant.
 275
 276         * include/std/type_traits (__remove_cv_t): New alias template.
 277         (is_void, is_integral, is_floating_point, is_pointer)
 278         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
 279         (is_member_point), __is_signed_integer, __is_unsigned_integer)
 280         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
 281         (__decay_selector): Use __remove_cv_t.
 282         (remove_cv): Add partial specializations for cv-qualified types.
 283         (__decay_t): New alias template.
 284         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
 285         __decay_t.
 286         (__enable_if_t): Move earlier in the file.
 287         (_Require): Use __enable_if_t.
 288         (swap(T&, T&)): Use _Require.
 289         (swap(T(&)[N])): Use __enable_if_t.
 290
 291 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 292
 293         Implement C++20 p1424 - 'constexpr' feature macro concerns,
 294         Issue 3256 - Feature testing macro for constexpr algorithms,
 295         and Issue 3257 - Missing feature testing macro update from P0858.
 296         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
 297         * include/bits/algorithmfwd.h: Ditto.
 298         * include/std/utility: Ditto.
 299         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
 300         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
 301         __cpp_lib_constexpr macro in <algorith>.
 302         * testsuite/20_util/exchange/constexpr.cc: Add check for
 303         __cpp_lib_constexpr macro in <utility>.
 304         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
 305         __cpp_lib_constexpr_algorithms.
 306         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
 307         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
 308         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
 309         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
 310         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
 311         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
 312         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
 313         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
 314         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
 315         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
 316         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
 317         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
 318         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
 319         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
 320         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
 321         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
 322         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
 323         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
 324         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
 325         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
 326         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
 327         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
 328         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
 329         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
 330         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
 331         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
 332         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
 333         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
 334         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
 335         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
 336         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
 337         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
 338         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
 339         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
 340         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
 341         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
 342         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
 343         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
 344         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
 345         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
 346         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
 347         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
 348         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
 349         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
 350         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
 351         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
 352         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
 353         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
 354         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
 355         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
 356         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
 357         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
 358         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
 359
 360 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 361
 362         Update docs for recent <span> and constexpr lib changes.
 363         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
 364         p1023r0, p1085r2 status.
 365         * doc/html/manual/status.html: Regenerate.
 366
 367 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
 368
 369         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
 370         final offsets with constants.
 371
 372 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
 373
 374         * include/bits/range_access.h (__adl_to_address): Remove.
 375         * include/std/span (__is_base_derived_safe_convertible_v): Replace
 376         with span::__is_compatible.
 377         (__is_std_array_v): Replace with __is_std_array class template and
 378         partial specializations.
 379         (__is_std_array, __is_std_span): New class templates and partial
 380         specializations.
 381         (span::__is_compatible): New alias template for SFINAE constraints.
 382         (span::span(element_type (&)[N])): Remove redundant constraints. Do
 383         not use __adl_data to obtain a pointer.
 384         (span::span(array<value_type, N>&)): Likewise.
 385         (span::span(const array<value_type, N>&)): Likewise.
 386         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
 387         (span::iter_value_t, span::derived_from): New alias templates for
 388         SFINAE constraints, until the equivalents are supported in <concepts>
 389         and <iterator>.
 390         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
 391         for SFINAE constraints.
 392         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
 393         SFINAE constraints.
 394         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
 395         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
 396         Use std::to_address instead of __adl_to_address.
 397         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
 398         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
 399         template for SFINAE constraints.
 400         [!_GLIBCXX_P1394] (span::span(Container&))
 401         (span::span(const Container&)): Improve constraints.
 402         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
 403         (span::span(pointer, pointer)): Remove redundant cast of pointer.
 404         (span(const span<OType, OExtent>&)): New constructor.
 405
 406 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
 407
 408         * include/bits/range_access.h (ssize): Define for C++20.
 409         * testsuite/24_iterators/range_access_cpp20.cc: New test.
 410         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
 411         * doc/html/*: Regenerate.
 412
 413 2019-09-06  Florian Weimer  <fweimer@redhat.com>
 414
 415         * configure: Regenerate.
 416
 417 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 418
 419         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
 420         P1024R3. Remove entry for P0920R2.
 421         * include/std/span  (__cpp_lib_span): Change value.
 422         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
 423         constructor.
 424         (span): Replace __extent_storage base class with data member.
 425         (span::_S_subspan_extent): New function.
 426         (span::empty()): Add nodiscard attribute.
 427         (span::front, span::back, span::operator[]): Check preconditions.
 428         (span::first, span::last, span::subspan): Add noexcept. Improve
 429         precondition checks (LWG 3103).
 430         (get): Remove redundant condition from static_assert.
 431         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
 432         (as_writable_bytes): Add inline specifier.
 433         * include/std/version (__cpp_lib_span): Change value.
 434         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
 435         * testsuite/23_containers/span/front_neg.cc: Likewise.
 436         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
 437         * testsuite/23_containers/span/last_neg.cc: Improve test.
 438         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
 439         * testsuite/23_containers/span/1.cc: New test.
 440         * testsuite/23_containers/span/2.cc: New test.
 441         * testsuite/23_containers/span/back_assert_neg.cc: New test.
 442         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
 443         * testsuite/23_containers/span/first_assert_neg.cc: New test.
 444         * testsuite/23_containers/span/first_neg.cc: New test.
 445         * testsuite/23_containers/span/front_assert_neg.cc: New test.
 446         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
 447         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
 448         * testsuite/23_containers/span/last_assert_neg.cc: New test.
 449         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
 450         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
 451         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
 452         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
 453         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
 454         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
 455
 456 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
 457
 458         * include/Makefile.am: Add <span> header.
 459         * include/Makefile.in: Regenerate.
 460         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
 461         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
 462         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
 463         New functions for performing argument-dependent lookup of range
 464         customization points.
 465         * include/bits/stl_iterator.h (__normal_iterator): Add
 466         _GLIBCXX20_CONSTEXPR to all functions.
 467         * include/std/span: New header.
 468         * include/std/version (__cpp_lib_span): Define feature test macro.
 469         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
 470         * testsuite/23_containers/span/everything.cc: New test.
 471         * testsuite/23_containers/span/get_neg.cc: New test.
 472         * testsuite/23_containers/span/last_neg.cc: New test.
 473         * testsuite/23_containers/span/subspan_neg.cc: New test.
 474         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
 475         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
 476         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
 477
 478 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 479
 480         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
 481         * doc/html/*: Regenerate.
 482
 483 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 484
 485         PR libstdc++/41861
 486         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
 487         pthread_cond_clockwait function.
 488         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
 489         * configure: Regenerate.
 490         * config.h.in: Regenerate.
 491         * include/std/condition_variable: (condition_variable): Rename
 492         __steady_clock_t typedef and add system_clock. Change __clock_t to be
 493         a typedef for the preferred clock to convert arbitrary other clocks to.
 494         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
 495         overload.
 496         (wait_until): Change __clock_t overload to use system_clock.
 497         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
 498         steady_clock overload that calls pthread_cond_clockwait.
 499         (__wait_until_impl): Change __clock_t overload to use system_clock.
 500         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
 501         steady_clock for __clock_t if pthread_cond_clockwait is available.
 502
 503 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 504
 505         * testsuite/30_threads/condition_variable/members/2.cc (test01):
 506         Parameterise so that test can be run against an arbitrary clock.
 507         (main): Test using std::chrono::steady_clock and a user-defined
 508         clock in addition to the previous std::chrono::system_clock.
 509         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
 510
 511 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
 512
 513         * crossconfig.m4: Remove references to spu.
 514         * configure: Regenerate.
 515         * doc/xml/manual/appendix_contributing.xml: Remove references
 516         to __ea as "badword" for spu.
 517         * doc/html/manual/source_code_style.html: Regenerate.
 518         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
 519         to avoid __ea (as "badword" for spu).
 520         (__ellint_rj): Likewise.
 521
 522 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
 523
 524         PR other/79543
 525         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
 526         scanning to conform to the GNU Coding Standards.
 527         * configure: Regenerate.
 528
 529 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 530
 531         * src/c++17/memory_resource.cc: Use __constinit keyword.
 532
 533 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 534
 535         * doc/xml/manual/abi.xml: Document 9.x library versions.
 536         * doc/html/*: Regenerate.
 537
 538 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 539
 540         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
 541         (__detail::__to_chars_8_len): Remove.
 542         (__detail::__to_chars_8): Inline length calculation here.
 543         (__detail::__from_chars_binary): Use numeric_limits instead of
 544         CHAR_BIT.
 545
 546 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 547
 548         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 549         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
 550         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 551         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 552         Likewise.
 553
 554 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
 555
 556         * testsuite_files/util/testsuite_performance.h
 557         (resource_counter::start): Ignore unused malloc(0) result.
 558
 559 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
 560
 561         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
 562         Model Object Technologies): Adjust name and link.
 563
 564 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
 565
 566         * include/std/charconv (__detail::__to_chars_8)
 567         __detail::__to_chars_16): Replace array of precomputed digits with
 568         arithmetic operations to avoid CPU cache misses. Remove zero
 569         termination from array of digits to allow symbol merge with generic
 570         implementation of __detail::__to_chars. Replace final offsets with
 571         constants. Use __detail::__to_chars_len_2 instead of a generic
 572         __detail::__to_chars_len.
 573         (__detail::__to_chars): Remove zero termination from array of digits.
 574         (__detail::__to_chars_2): Leading digit is always '1'.
 575
 576 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 577
 578         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
 579
 580 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
 581
 582         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 583
 584 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 585
 586         PR libstdc++/89164
 587         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
 588         to template parameters.
 589         * include/bits/stl_uninitialized.h (uninitialized_copy)
 590         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
 591         diagnose invalid uses.
 592         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
 593         Adjust expected error.
 594         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
 595         New test.
 596         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
 597         89164.cc: New test.
 598         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
 599         New test.
 600         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
 601         89164.cc: New test.
 602         * testsuite/23_containers/vector/cons/89164.cc: New test.
 603         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
 604
 605 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
 606
 607         PR libstdc++/91067
 608         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
 609         * configure: Regenerate.
 610         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
 611         missing symbols.
 612         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
 613         constructors.
 614         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 615
 616 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
 617
 618         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 619         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 620
 621 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
 622
 623         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
 624         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 625         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 626         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 627         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 628         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 629         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 630
 631 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
 632
 633         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 634         (std::filesystem::__gnu_posix::lstat): Add return type.
 635
 636 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
 637
 638         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
 639
 640         * include/std/numeric (reduce): Fix Doxygen markup.
 641
 642         PR libstdc++/91371
 643         * include/std/type_traits (is_function): Simplify definition. Remove
 644         partial specializations for function types.
 645         (__is_referenceable): Simplify definition.
 646         * testsuite/20_util/bind/91371.cc: New test.
 647         * testsuite/20_util/is_function/91371.cc: New test.
 648         * testsuite/20_util/is_function/value.cc: Check more pointer types.
 649         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
 650         * testsuite/20_util/is_object/91371.cc: New test.
 651
 652 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
 653
 654         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 655
 656 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
 657
 658         PR libstdc++/91456
 659         * include/bits/std_function.h (__check_func_return_type): Remove.
 660         (function::_Callable): Use std::__is_invocable_impl instead of
 661         __check_func_return_type.
 662         * include/std/type_traits (__is_invocable_impl): Add another defaulted
 663         template parameter. Define a separate partial specialization for
 664         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
 665         with a check that models delayed temporary materialization.
 666         * testsuite/20_util/function/91456.cc: New test.
 667         * testsuite/20_util/is_invocable/91456.cc: New test.
 668
 669 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
 670
 671         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
 672
 673 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
 674
 675         Implement C++20 p0879 - Constexpr for swap and swap related functions.
 676         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
 677         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
 678         New macro.
 679         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
 680         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
 681         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
 682         * include/bits/move.h (swap): Add constexpr.
 683         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
 684         (__gcd, __rotate, rotate, __partition, __heap_select)
 685         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
 686         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
 687         (__introselect, __chunk_insertion_sort, next_permutation)
 688         (prev_permutation, partition, partial_sort, nth_element, sort)
 689         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
 690         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
 691         (swap_ranges): Add constexpr.
 692         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
 693         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
 694         Add constexpr.
 695         * include/std/type_traits (swap): Add constexpr.
 696         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
 697         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
 698         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
 699         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
 700         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
 701         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
 702         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
 703         * testsuite/25_algorithms/partition/constexpr.cc: New test.
 704         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
 705         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
 706         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
 707         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
 708         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
 709         * testsuite/25_algorithms/sort/constexpr.cc: New test.
 710         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
 711         * testsuite/25_algorithms/swap/constexpr.cc: New test.
 712         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
 713
 714 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
 715
 716         PR libstdc++/90361
 717         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
 718
 719         * include/std/tuple (__unpack_std_tuple): New variable template and
 720         partial specializations.
 721         (apply, make_from_tuple): Add noexcept-specifier.
 722         * testsuite/20_util/tuple/apply/2.cc: New test.
 723         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
 724
 725 2019-08-09  Corentin Gay  <gay@adacore.com>
 726
 727         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
 728         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
 729         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
 730         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
 731         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
 732         Add call to `VERIFY`.
 733
 734 2019-08-09  Alexandre Oliva <oliva@adacore.com>
 735
 736         * include/ext/random
 737         (normal_mv_distribution::param_type::param_type): New private
 738         ctor taking a decomposed varcov matrix, for use by...
 739         (operator>>): ... this, befriended.
 740         * include/ext/random.tcc (operator>>): Use it.
 741         (normal_mv_distribution::param_type::_M_init_lower): Adjust
 742         member function name in exception message.
 743
 744 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
 745
 746         P0325R4 to_array from LFTS with updates
 747         * include/experimental/array (to_array): Qualify call to __to_array.
 748         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
 749         * include/std/version (__cpp_lib_to_array): Likewise.
 750         * testsuite/23_containers/array/creation/1.cc: New test.
 751         * testsuite/23_containers/array/creation/2.cc: New test.
 752         * testsuite/23_containers/array/creation/3_neg.cc: New test.
 753         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
 754         Use zero for dg-error line number.
 755
 756 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
 757
 758         P1651R0 bind_front should not unwrap reference_wrapper
 759         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
 760         * include/std/version (__cpp_lib_bind_front): Update value.
 761         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
 762         feature test macro.
 763         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
 764
 765         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
 766         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
 767         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
 768         specializations for __float128.
 769         * testsuite/26_numerics/numbers/float128.cc: New test.
 770
 771 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
 772
 773         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
 774         doxygen.nl.
 775
 776 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
 777
 778         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
 779         in <algorithm> and <utility> Headers.
 780         Implement C++20 p1023 - constexpr comparison operators for std::array.
 781         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
 782         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
 783         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
 784         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
 785         none_of, partition_copy, partition_point, remove, remove_if,
 786         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
 787         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
 788         count_if, equal, find, find_first_of, find_if, for_each, generate,
 789         generate_n, lexicographical_compare, merge, mismatch, replace,
 790         replace_if, search, search_n, set_difference, set_intersection,
 791         set_symmetric_difference, set_union, transform, unique_copy):
 792         Mark constexpr.
 793         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
 794         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
 795         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
 796         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
 797          Use const ref instead of ref arg;
 798         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
 799         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
 800         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
 801         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
 802         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
 803         __iter_comp_iter): Mark constexpr.
 804         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
 805         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
 806         none_of, any_of, find_if_not, is_partitioned, partition_point,
 807         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
 808         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
 809         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
 810         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
 811         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
 812         __equal_range, equal_range, binary_search, __includes, includes,
 813         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
 814         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
 815         is_sorted_until, __is_permutation, is_permutation, for_each, find,
 816         find_if, find_first_of, adjacent_find, count, count_if, search,
 817         search_n, transform, replace, replace_if, generate, generate_n,
 818         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
 819         set_intersection, __set_difference, set_difference,
 820         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
 821         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
 822         wrappers around __builtin_memmove and __builtin_memcmp
 823         respectively;
 824         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
 825         copy, move, __copy_move_b, __copy_move_backward_a,
 826         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
 827         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
 828         __lexicographical_compare_impl, __lexicographical_compare,
 829         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
 830         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
 831         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
 832         is_heap): Mark constexpr.
 833         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
 834         is_heap): Mark constexpr.
 835         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
 836         * include/std/array: Make comparison ops constexpr.
 837         * include/std/utility: Make exchange constexpr.
 838         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
 839         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
 840         * testsuite/23_containers/array/tuple_interface/
 841         tuple_element_neg.cc: Adjust.
 842         * testsuite/20_util/exchange/constexpr.cc: New.
 843         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
 844         * testsuite/25_algorithms/constexpr_macro.cc: New.
 845         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
 846         * testsuite/25_algorithms/all_of/constexpr.cc: New.
 847         * testsuite/25_algorithms/any_of/constexpr.cc: New.
 848         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
 849         * testsuite/25_algorithms/copy/constexpr.cc: New.
 850         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
 851         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
 852         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
 853         * testsuite/25_algorithms/count/constexpr.cc: New.
 854         * testsuite/25_algorithms/count_if/constexpr.cc: New.
 855         * testsuite/25_algorithms/equal/constexpr.cc: New.
 856         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
 857         * testsuite/25_algorithms/fill/constexpr.cc: New.
 858         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
 859         * testsuite/25_algorithms/find/constexpr.cc: New.
 860         * testsuite/25_algorithms/find_end/constexpr.cc: New.
 861         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
 862         * testsuite/25_algorithms/find_if/constexpr.cc: New.
 863         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
 864         * testsuite/25_algorithms/for_each/constexpr.cc: New.
 865         * testsuite/25_algorithms/generate/constexpr.cc: New.
 866         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
 867         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
 868         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
 869         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
 870         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
 871         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
 872         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
 873         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
 874         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
 875         * testsuite/25_algorithms/merge/constexpr.cc: New.
 876         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
 877         * testsuite/25_algorithms/none_of/constexpr.cc: New.
 878         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
 879         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
 880         * testsuite/25_algorithms/remove/constexpr.cc: New.
 881         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
 882         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
 883         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
 884         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
 885         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
 886         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
 887         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
 888         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
 889         * testsuite/25_algorithms/search/constexpr.cc: New.
 890         * testsuite/25_algorithms/search_n/constexpr.cc: New.
 891         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
 892         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
 893         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
 894         * testsuite/25_algorithms/set_union/constexpr.cc: New.
 895         * testsuite/25_algorithms/transform/constexpr.cc: New.
 896         * testsuite/25_algorithms/unique/constexpr.cc: New.
 897         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
 898         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
 899
 900 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
 901
 902         * include/std/memory (make_obj_using_allocator): Qualify call to
 903         uses_allocator_construction_args.
 904
 905         P0631R4 Math Constants
 906         * include/Makefile.am: Add new header.
 907         * include/Makefile.in: Regenerate.
 908         * include/precompiled/stdc++.h: Include new header.
 909         * include/std/numbers: New header.
 910         * include/std/version (__cpp_lib_math_constants): Define.
 911         * testsuite/26_numerics/numbers/1.cc: New test.
 912         * testsuite/26_numerics/numbers/2.cc: New test.
 913         * testsuite/26_numerics/numbers/3.cc: New test.
 914         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
 915
 916         * include/std/bit: Add Doxygen comments.
 917
 918         PR libstdc++/91308
 919         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
 920         constraints on deleter that should only apply to the constructor.
 921         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
 922         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
 923         constraints on deleter here.
 924         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
 925
 926 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
 927
 928         PR libstdc++/51333
 929         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
 930         constructor inline.
 931         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
 932         constructor.
 933         * testsuite/18_support/51333.cc: New test.
 934
 935 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
 936
 937         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
 938         to the Doxygen manual. Avoid a "here" link on the way.
 939         Fix another broken link to Doxygen docblocks.
 940
 941 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
 942
 943         * include/std/bit (__cpp_lib_endian): Define.
 944         * include/std/version (__cpp_lib_endian): Define.
 945         * testsuite/26_numerics/endian/2.cc: New.
 946         * testsuite/26_numerics/endian/3.cc: New.
 947         * testsuite/26_numerics/endian/4.cc: New.
 948
 949 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
 950
 951         * testsuite/util/testsuite_iterators.h
 952         (bidirectional_iterator_wrapper): Fix type comment.
 953         (random_access_iterator_wrapper): Likewise.
 954
 955 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
 956
 957         * include/std/bit (endian): Move definition here as per P1612R1.
 958         * include/std/type_traits (endian): Remove definition from here.
 959         * testsuite/20_util/endian/1.cc: Rename to ...
 960         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
 961
 962 2019-07-25  Martin Liska  <mliska@suse.cz>
 963             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
 964
 965         PR c++/23383
 966         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
 967         -fno-allocation-dce.
 968         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
 969         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
 970         * testsuite/ext/new_allocator/check_new.cc: Likewise.
 971
 972 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
 973
 974         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
 975         * testsuite/26_numerics/bit/bit.count/*: Here.
 976
 977         * include/std/bit (__rotl, __rotr): Change second parameter from
 978         unsigned int to int and handle negative values.
 979         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
 980         parameter from unsigned int to int. Add nodiscard attribute.
 981         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
 982         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
 983         shifts.
 984         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
 985         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
 986         shifts.
 987
 988         * include/std/bit (__ceil2): Make unrepresentable results undefined,
 989         as per P1355R2. Add debug assertion. Perform one left shift, not two,
 990         so that out of range values cause undefined behaviour. Ensure that
 991         shift will still be undefined if left operand is promoted.
 992         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
 993         unrepresentable values with checks that they are not core constant
 994         expressions.
 995         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
 996
 997 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
 998
 999         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1000         sized deallocation size computation.
1001
1002 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1003
1004         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1005
1006 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1007
1008         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1009         (~_Temporary_buffer()): Use latter.
1010         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1011
1012 2019-07-17  Andreas Schwab  <schwab@suse.de>
1013
1014         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1015
1016 2019-07-16  Jason Merrill  <jason@redhat.com>
1017
1018         * include/std/memory (uses_allocator_construction_args): Add parens
1019         around constraint.
1020
1021 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1022
1023         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1024
1025         * include/experimental/string_view (__detail::__idt): Remove.
1026         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1027         Use __type_identity_t instead of __detail::__idt;
1028         * include/std/string_view (__detail::__idt): Remove.
1029         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1030         Use __type_identity_t instead of __detail::__idt;
1031         * include/std/type_traits (__type_identity_t): New alias template.
1032
1033         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1034         and floating point atomics.
1035
1036 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1037
1038         * doc/xml/manual/configure.xml: Improve documentation of
1039         --enable-libstdcxx-time option.
1040
1041         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1042         wrappers around atomic built-ins.
1043         (__atomic_float, __atomic_ref): New class templates for use as base
1044         classes.
1045         * include/std/atomic (atomic<float>, atomic<double>)
1046         (atomic<long double>): New explicit specializations.
1047         (atomic_ref): New class template.
1048         (__cpp_lib_atomic_ref): Define.
1049         * include/std/version (__cpp_lib_atomic_ref): Define.
1050         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1051         * testsuite/29_atomics/atomic_float/1.cc: New test.
1052         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1053         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1054         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1055         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1056         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1057         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1058         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1059
1060 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1061
1062         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1063         throw() with _GLIBCXX_NOTHROW.
1064         (__atomic_add_dispatch): Return after performing atomic increment.
1065
1066 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1067
1068         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1069         (__exchange_and_add): Replace static specifier with always_inline
1070         attribute.
1071         (__exchange_and_add_single, __atomic_add_single): Likewise.
1072         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1073         combine !__gthread_active_p() and !__GTHREADS branches.
1074
1075 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1076
1077         PR libstdc++/91067
1078         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1079         * configure: Regenerate.
1080         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1081         missing symbols.
1082         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1083         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1084
1085 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1086
1087         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1088         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1089         instead of __is_identifier to detect Clang support.
1090
1091 2019-07-02  Jim Wilson  <jimw@sifive.com>
1092
1093         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1094         and xmllint.
1095         * configure: Regenerate.
1096
1097 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1098
1099         PR libstdc++/91012
1100         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1101         for the what_arg parameters.
1102         (filesystem_error::filesystem_error): Pass system_error::what() to
1103         the _Impl constructor.
1104         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1105         filesystem_error::what() contains system_error::what().
1106
1107 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1108
1109         * include/std/charconv (chars_format): Define bitmask type.
1110         * testsuite/20_util/to_chars/chars_format.cc: New test.
1111
1112         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1113         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1114         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1115         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1116         (countl_one(byte), countr_zero(byte), countr_one(byte))
1117         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1118         (log2p1(byte)): Remove.
1119         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1120         (__detail::__is_int_to_chars_type): Remove.
1121         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1122         and __is_unsigned_integer.
1123         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1124         (__is_signed_integer, __is_unsigned_integer): New helpers.
1125         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1126         std::byte overload.
1127         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1128         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1129         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1130         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1131         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1132         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1133         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1134         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1135         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1136         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1137
1138 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1139
1140         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1141         function.
1142
1143 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1144
1145         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1146         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1147         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1148         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1149
1150 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1151
1152         * include/std/numeric (midpoint(T, T)): Change implementation for
1153         floating-point types to avoid incorrect rounding of denormals.
1154         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1155         rounding with denormals.
1156         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1157         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1158
1159         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1160
1161 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1162
1163         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1164         stage of bootstrap.
1165         * configure: Regenerate.
1166
1167         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1168         Qualify calls to __never_valueless.
1169
1170         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1171         C++17 working draft.
1172
1173         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1174         vector<bool> for test.
1175         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1176
1177 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1178
1179         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1180         private.
1181         (istream_iterator::_M_read()): Do not check stream state before
1182         attempting extraction. Set stream pointer to null when extraction
1183         fails (P0738R2).
1184         (operator==(const istream_iterator&, const istream_iterator&)): Change
1185         to be a hidden friend of istream_iterator.
1186         (operator!=(const istream_iterator&, const istream_iterator&)):
1187         Likewise.
1188         (ostream_iterator::ostream_iterator()): Add default constructor.
1189         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1190         addressof.
1191         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1192         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1193         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1194         constructor taking a string.
1195         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1196         New test.
1197
1198 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1199             Jonathan Wakely  <jwakely@redhat.com>
1200
1201         PR libstdc++/90945
1202         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1203         values of type bool for vector<bool> elements.
1204         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1205         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1206
1207 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1208
1209         PR libstdc++/90920 partially revert r263433
1210         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1211         (rotate): Remove checks.
1212         * testsuite/25_algorithms/rotate/90920.cc: New test.
1213
1214         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1215         category used in invocable check.
1216         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1217         * testsuite/26_numerics/reduce/2.cc: New test.
1218
1219 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1220
1221         * include/bits/algorithmfwd.h: Change title of doc group.
1222         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1223         P0024R2.
1224         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1225         * include/std/numeric (__is_random_access_iter): New internal trait.
1226         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1227         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1228         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1229         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1230         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1231         * testsuite/26_numerics/reduce/1.cc: New test.
1232         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1233         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1234         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1235         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1236         member function.
1237
1238         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1239         in unsigned int to avoid promotion (LWG 2950).
1240
1241 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1242
1243         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1244         failure on AIX.
1245
1246         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1247
1248         PR libstdc++/90281 Fix string conversions for filesystem::path
1249         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1250         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1251         __str_codecvt_in_all to fail for partial conversions and throw on
1252         error.
1253         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1254         (path::_Cvt<char8_t>): Add explicit specialization.
1255         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1256         overloads.
1257         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1258         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1259         instead of codecvt_utf8. Use __str_codecvt_in_all and
1260         __str_codecvt_out_all.
1261         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1262         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1263         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1264         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1265         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1266         after converting to UTF-8.
1267         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
1268         __str_codecvt_in_all.
1269         (path::string): Fix initialization of string types with different
1270         allocators.
1271         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1272         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1273         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
1274         runtime conditions.
1275         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
1276         return false for partial conversions.
1277         * include/experimental/bits/fs_path.h (u8path):
1278         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
1279         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
1280         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
1281         instead of codecvt_utf8. Use __str_codecvt_in_all and
1282         __str_codecvt_out_all.
1283         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1284         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1285         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1286         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1287         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
1288         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1289         __str_codecvt_in_all.
1290         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1291         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1292         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
1293         __str_codecvt_in_all.
1294         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
1295         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
1296         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
1297         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
1298         strings and with Unicode characters outside the basic multilingual
1299         plane.
1300         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
1301         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
1302         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
1303         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
1304         * testsuite/experimental/filesystem/path/native/string.cc: Test with
1305         empty strings and with Unicode characters outside the basic
1306         multilingual plane.
1307
1308 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
1309             Jonathan Wakely  <jwakely@redhat.com>
1310
1311         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
1312         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
1313         deallocate node if insertion fails.
1314         (_Hashtable::_M_insert_multi_node): Likewise.
1315         (_Hashtable::_M_reinsert_node): Pass additional key argument.
1316         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
1317         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
1318         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
1319         (_Hashtable::extract(const _Key&)): Likewise.
1320         (_Hashtable::_M_merge_unique): Pass additional key argument.
1321         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
1322         _Scoped_node.
1323         (_Hashtable::_M_insert): Likewise.
1324         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
1325         (_Hashtable_alloc): Add comments to functions with misleading names.
1326
1327 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1328
1329         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
1330         for std::string.
1331         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
1332         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
1333         header for std::allocator.
1334         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
1335         using-declaration for std::size_t.
1336         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
1337         Likewise.
1338         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
1339         std::istream.
1340         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
1341         * testsuite/experimental/map/erasure.cc: Include <string> for
1342         std::string.
1343         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
1344
1345 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
1346
1347         * include/experimental/type_traits (experimental::nonesuch): Use
1348         pragma to disable -Wctor-dtor-privacy warnings.
1349         * include/std/type_traits (__is_convertible_helper<From, To, false>)
1350         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
1351
1352         * include/std/version (__cpp_lib_bind_front): Add missing macro.
1353
1354 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
1355
1356         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
1357         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
1358         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
1359         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
1360
1361         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
1362         (variant::emplace): Change static_assert messages from "should be"
1363         to "must be".
1364         (hash<monostate>::operator()): Remove name of unused parameter.
1365
1366         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
1367         expression.
1368
1369         * include/Makefile.am: Add new <bits/charconv.h> header.
1370         * include/Makefile.in: Regenerate.
1371         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
1372         (to_string(long), to_string(unsigned long), to_string(long long))
1373         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
1374         * include/bits/charconv.h: New header.
1375         (__detail::__to_chars_len): Move here from <charconv>.
1376         (__detail::__to_chars_10_impl): New function extracted from
1377         __detail::__to_chars_10.
1378         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
1379         (__to_chars_unsigned_type): New class template that reuses
1380         __make_unsigned_selector_base::__select to pick a type.
1381         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
1382         (__detail::__to_chars_len): Move to new header.
1383         (__detail::__to_chars_10): Add inline specifier. Move code doing the
1384         output to __detail::__to_chars_10_impl and call that.
1385         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
1386         * testsuite/21_strings/basic_string/numeric_conversions/char/
1387         to_string.cc: Fix reference in comment. Remove unused variable.
1388         * testsuite/21_strings/basic_string/numeric_conversions/char/
1389         to_string_int.cc: New test.
1390
1391 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1392
1393         Fix ConstexprIterator requirements tests - No constexpr algorithms!
1394         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1395         Replace copy with hand-rolled loop.
1396         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1397         Ditto.
1398
1399 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
1400
1401         Test for C++20 p0858 - ConstexprIterator requirements.
1402         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1403         New test.
1404         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1405         New test.
1406
1407 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
1408
1409         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
1410         project) standards.
1411         * include/bits/c++config: Rename all macros of the form __PSTL* to
1412         _PSTL*.
1413         * include/std/algorithm: Likewise.
1414         * include/std/execution: Likewise.
1415         * include/std/numeric: Likewise.
1416         * include/std/memory: Likewise.
1417         * include/pstl/glue_memory_impl.h: Likewise.
1418         * include/pstl/numeric_impl.h: Likewise.
1419         * include/pstl/glue_memory_defs.h: Likewise.
1420         * include/pstl/execution_defs.h: Likewise.
1421         * include/pstl/utils.h: Likewise.
1422         * include/pstl/algorithm_fwd.h: Likewise.
1423         * include/pstl/unseq_backend_simd.h: Likewise.
1424         * include/pstl/glue_execution_defs.h: Likewise.
1425         * include/pstl/algorithm_impl.h: Likewise.
1426         * include/pstl/parallel_impl.h: Likewise.
1427         * include/pstl/memory_impl.h: Likewise.
1428         * include/pstl/glue_numeric_defs.h: Likewise.
1429         * include/pstl/parallel_backend_utils.h: Likewise.
1430         * include/pstl/glue_algorithm_defs.h: Likewise.
1431         * include/pstl/parallel_backend.h: Likewise.
1432         * include/pstl/glue_numeric_impl.h: Likewise.
1433         * include/pstl/parallel_backend_tbb.h: Likewise.
1434         * include/pstl/numeric_fwd.h: Likewise.
1435         * include/pstl/glue_algorithm_impl.h: Likewise.
1436         * include/pstl/execution_impl.h: Likewise.
1437         * include/pstl/pstl_config.h: Likewise.
1438         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1439         * testsuite/util/pstl/test_utils.h: Likewise.
1440         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1441         Likewise.
1442         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1443         Likewise.
1444         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1445         Likewise.
1446         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
1447         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
1448         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
1449         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
1450         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1451         Likewise.
1452         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
1453         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
1454         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
1455         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
1456         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1457         Likewise.
1458         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
1459         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
1460         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
1461         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
1462         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1463         Likewise.
1464         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
1465         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
1466         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1467         Likewise.
1468         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1469         Likewise.
1470         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
1471         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1472         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1473         Likewise.
1474         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1475         Likewise.
1476         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1477         Likewise.
1478         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1479         Likewise.
1480         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1481         Likewise.
1482         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1483         Likewise.
1484         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1485         Likewise.
1486         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1487         Likewise.
1488         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1489         Likewise.
1490         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1491         Likewise.
1492         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1493         Likewise.
1494         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
1495
1496         Rename header guards to be consistent with upstream project's
1497         conventions.
1498         * include/pstl/glue_memory_impl.h: Rename all macros of the form
1499         _PSTL_(.*)_H to _PSTL_\U\1_H.
1500         * include/pstl/numeric_impl.h: Likewise.
1501         * include/pstl/glue_memory_defs.h: Likewise.
1502         * include/pstl/execution_defs.h: Likewise.
1503         * include/pstl/utils.h: Likewise.
1504         * include/pstl/algorithm_fwd.h: Likewise.
1505         * include/pstl/unseq_backend_simd.h: Likewise.
1506         * include/pstl/glue_execution_defs.h: Likewise.
1507         * include/pstl/algorithm_impl.h: Likewise.
1508         * include/pstl/parallel_impl.h: Likewise.
1509         * include/pstl/memory_impl.h: Likewise.
1510         * include/pstl/glue_numeric_defs.h: Likewise.
1511         * include/pstl/parallel_backend_utils.h: Likewise.
1512         * include/pstl/glue_algorithm_defs.h: Likewise.
1513         * include/pstl/parallel_backend.h: Likewise.
1514         * include/pstl/glue_numeric_impl.h: Likewise.
1515         * include/pstl/parallel_backend_tbb.h: Likewise.
1516         * include/pstl/numeric_fwd.h: Likewise.
1517         * include/pstl/glue_algorithm_impl.h: Likewise.
1518         * include/pstl/execution_impl.h: Likewise.
1519         * include/pstl/pstl_config.h: Likewise.
1520         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1521
1522         Synchronize libstdc++ parallel algorithms with upstream
1523         project.
1524         * include/pstl/algorithm_fwd.h: Synchronize with
1525         upstream PSTL project.
1526         * include/pstl/algorithm_impl.h: Likewise.
1527         * include/pstl/execution_defs.h: Likewise.
1528         * include/pstl/execution_impl.h: Likewise.
1529         * include/pstl/glue_algorithm_impl.h: Likewise.
1530         * include/pstl/glue_execution_defs.h: Likewise.
1531         * include/pstl/numeric_fwd.h: Likewise.
1532         * include/pstl/numeric_impl.h: Likewise.
1533         * include/pstl/parallel_backend.h: Likewise.
1534         * include/pstl/pstl_config.h: Likewise.
1535         * include/pstl/unseq_backend_simd.h: Likewise.
1536         * include/pstl/parallel_backend_serial.h: New file.
1537         * include/Makefile.am (pstl_headers): Add
1538         parallel_backend_serial.h.
1539         * include/Makefile.in: Regenerate.
1540
1541         Clean up non-conforming names
1542         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
1543         Uglfiy copy_range1 and copy_range2
1544         (__pattern_walk2_n): Rename local n to __n
1545         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
1546         Rename parameter _T to _Tp.
1547
1548         Integrate non-TBB serial backend support
1549         * include/bits/c++config: Adjust TBB detection logic to select serial
1550         PSTL backend if no TBB present.
1551         * testsuite/utils/pstl/test_utils.h: Remove check for
1552         _PSTL_USE_PAR_POLICIES
1553
1554 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
1555
1556         * testsuite/24_iterators/container_access.cc: Move dg-options before
1557         dg-do directive so the target check uses the -std option.
1558
1559         PR libstdc++/90770
1560         * configure: Regenerate.
1561         * src/Makefile.am (stamp-debug): Also test for missing makefile.
1562         * src/Makefile.in: Regenerate.
1563
1564 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
1565
1566         * include/std/array: Do not include <stdexcept>.
1567         * include/std/optional: Include <exception> and
1568         <bits/exception_defines.h> instead of <stdexcept>.
1569         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
1570         for std::isalnum.
1571         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
1572         std::allocator.
1573         * testsuite/23_containers/map/erasure.cc: Include <string>.
1574         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1575
1576         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
1577         dg-prune-output for different C++98 diagnostic.
1578         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
1579         Likewise.
1580         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
1581         Likewise.
1582         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
1583         Likewise.
1584         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
1585         Likewise.
1586         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
1587         Likewise.
1588         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
1589         Likewise.
1590         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
1591         Likewise.
1592         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
1593         Likewise.
1594         * testsuite/23_containers/vector/requirements/dr438/
1595         constructor_1_neg.cc: Likewise.
1596         * testsuite/23_containers/vector/requirements/dr438/
1597         constructor_2_neg.cc: Likewise.
1598         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
1599         Likewise.
1600         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
1601
1602         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
1603         Do not test allocator rebinding extension for C++2a.
1604         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
1605         dg-do directive for C++17 and C++2a.
1606
1607         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1608         1_c++0x.cc: Remove redundant test.
1609         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1610         2.cc: Use target selector instead of preprocessor condition.
1611         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1612         3.cc: Do not run test for C++2a.
1613         * testsuite/23_containers/forward_list/requirements/
1614         explicit_instantiation/3.cc: Likewise.
1615         * testsuite/23_containers/forward_list/requirements/
1616         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1617         for C++2a.
1618         * testsuite/23_containers/list/requirements/explicit_instantiation/
1619         1_c++0x.cc: Remove redundant test.
1620         * testsuite/23_containers/list/requirements/explicit_instantiation/
1621         2.cc: Use target selector instead of preprocessor condition.
1622         * testsuite/23_containers/list/requirements/explicit_instantiation/
1623         3.cc: Do not run test for C++2a.
1624         * testsuite/23_containers/list/requirements/explicit_instantiation/
1625         5.cc: Do not test allocator rebinding extension for C++2a.
1626         * testsuite/23_containers/map/requirements/explicit_instantiation/
1627         1_c++0x.cc: Remove redundant test.
1628         * testsuite/23_containers/map/requirements/explicit_instantiation/
1629         2.cc: Adjust comment.
1630         * testsuite/23_containers/map/requirements/explicit_instantiation/
1631         3.cc: Do not run test for C++2a.
1632         * testsuite/23_containers/map/requirements/explicit_instantiation/
1633         5.cc: Do not test allocator rebinding extension for C++2a.
1634         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1635         1_c++0x.cc: Remove redundant test.
1636         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1637         3.cc: Do not run test for C++2a.
1638         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1639         5.cc: Do not test allocator rebinding extension for C++2a.
1640         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1641         3.cc: Do not run test for C++2a.
1642         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1643         5.cc: Do not test allocator rebinding extension for C++2a.
1644         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1645         Do not run test for C++2a.
1646         * testsuite/23_containers/set/requirements/explicit_instantiation/
1647         1_c++0x.cc: Remove redundant test.
1648         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1649         Do not test allocator rebinding extension for C++2a.
1650         * testsuite/23_containers/unordered_map/requirements/
1651         explicit_instantiation/3.cc: Likewise.
1652         * testsuite/23_containers/unordered_map/requirements/
1653         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1654         for C++2a.
1655         * testsuite/23_containers/unordered_multimap/requirements/
1656         explicit_instantiation/3.cc: Do not run test for C++2a.
1657         * testsuite/23_containers/unordered_multimap/requirements/
1658         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1659         for C++2a.
1660         * testsuite/23_containers/unordered_multiset/requirements/
1661         explicit_instantiation/3.cc: Do not run test for C++2a.
1662         * testsuite/23_containers/unordered_multiset/requirements/
1663         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1664         for C++2a.
1665         * testsuite/23_containers/unordered_set/requirements/
1666         explicit_instantiation/3.cc: Do not run test for C++2a.
1667         * testsuite/23_containers/unordered_set/requirements/
1668         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1669         for C++2a.
1670         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1671         2.cc: Remove redundant test.
1672         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1673         3.cc: Do not run test for C++2a.
1674         * testsuite/23_containers/vector/requirements/explicit_instantiation/
1675         3.cc: Likewise.
1676
1677         * include/std/type_traits (is_empty, is_polymorphic, is_final)
1678         (is_abstract, is_aggregate): Remove static_assert.
1679         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
1680         from builtin only.
1681         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
1682         missing -std=gnu++17 option.
1683         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
1684         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
1685         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
1686         from builtin only.
1687
1688         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
1689         * testsuite/18_support/set_unexpected.cc: Likewise.
1690         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
1691         void.
1692         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
1693         function to be valid in C++11.
1694         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
1695         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
1696         include Library Fundamentals or Networking headers in C++11 mode.
1697         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
1698
1699         * include/std/tuple (_TC): Replace with _TupleConstraints.
1700         (_TupleConstraints): New helper for SFINAE constraints, with more
1701         expressive member functions to reduce duplication when used.
1702         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
1703         (tuple::_TCC): Replace dummy type parameter with bool non-type
1704         parameter that can be used to check the pack size.
1705         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
1706         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
1707         checking constraints in constructors.
1708         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
1709         New SFINAE helpers.
1710         (tuple::tuple): Use new helpers to reduce repitition in constraints.
1711         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
1712         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
1713         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
1714         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
1715         constraints in constructors.
1716         (tuple::__is_alloc_arg()): New SFINAE helpers.
1717         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
1718         constraints.
1719         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
1720         * testsuite/20_util/tuple/cons/90700.cc: New test.
1721         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
1722         to meet new constraint on allocator-extended default constructor.
1723
1724 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1725
1726         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
1727         * include/bits/stl_multimap.h (multimap): Likewise.
1728
1729 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
1730
1731         Rename variables and cleanup comments.
1732         * include/bits/hashtable_policy.h
1733         * include/bits/hashtable.h
1734
1735 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1736
1737         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
1738         Fix bgcolor for P0340R3.
1739         * doc/html/*: Regenerate.
1740
1741         PR libstdc++/90686
1742         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
1743         <experimental/memory_resource>.
1744         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
1745         P0339R6, P0340R3, P1164R1 and P1357R1.
1746         * doc/html/*: Regenerate.
1747
1748         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
1749         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
1750         allocator::value_type assertion for C++2a.
1751         * include/bits/hashtable.h: Likewise.
1752         * include/bits/stl_deque.h: Likewise.
1753         * include/bits/stl_list.h: Likewise.
1754         * include/bits/stl_map.h: Likewise.
1755         * include/bits/stl_multimap.h: Likewise.
1756         * include/bits/stl_multiset.h: Likewise.
1757         * include/bits/stl_set.h: Likewise.
1758         * include/bits/stl_vector.h: Likewise.
1759         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
1760         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
1761         * testsuite/23_containers/list/48101-3_neg.cc: New test.
1762         * testsuite/23_containers/map/48101-3_neg.cc: New test.
1763         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
1764         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
1765         * testsuite/23_containers/set/48101-3_neg.cc: New test.
1766         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
1767         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
1768         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
1769         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
1770         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
1771
1772 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
1773
1774         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
1775
1776 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
1777
1778         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
1779         constructors.
1780         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
1781         function.
1782         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
1783
1784 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
1785
1786         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
1787
1788         PR libstdc++/90682
1789         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
1790         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
1791         * libsupc++/eh_term_handler.h: New header defining
1792         _GLIBCXX_DEFAULT_TERM_HANDLER.
1793         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
1794         (set_terminate): Restore default handler when argument is null.
1795         (set_unexpected): Likewise.
1796         * testsuite/18_support/set_terminate.cc: New test.
1797         * testsuite/18_support/set_unexpected.cc: New test.
1798
1799         * include/backward/hashtable.h (size_t, ptrdiff_t)
1800         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
1801         (distance, vector, pair, __iterator_category): Remove
1802         using-declarations that add these names to namespace __gnu_cxx.
1803         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
1804         * include/ext/debug_allocator.h (size_t): Likewise.
1805         * include/ext/functional (size_t, unary_function, binary_function)
1806         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
1807         Likewise.
1808         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
1809         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
1810         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
1811         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
1812         * include/ext/numeric (iota): Fix outdated comment.
1813         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
1814         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
1815         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
1816         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
1817         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
1818         Likewise.
1819         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
1820         (allocator, __true_type, __false_type): Likewise.
1821
1822 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
1823
1824         PR libstdc++/71579
1825         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
1826         New helpers for checking preconditions in traits.
1827         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
1828         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
1829         (is_destructible, is_nothrow_destructible, is_constructible)
1830         (is_default_constructible, is_copy_constructible)
1831         (is_move_constructible, is_nothrow_default_constructible)
1832         (is_nothrow_constructible, is_nothrow_copy_constructible)
1833         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
1834         (is_nothrow_assignable, is_nothrow_copy_assignable)
1835         (is_nothrow_move_assignable, is_trivially_constructible)
1836         (is_trivially_copy_constructible, is_trivially_move_constructible)
1837         is_trivially_assignable, is_trivially_copy_assignable)
1838         (is_trivially_move_assignable, is_trivially_destructible)
1839         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
1840         (is_invocable_r, is_nothrow_invocable)
1841         (has_unique_object_representations, is_aggregate): Add static_asserts
1842         to make sure that type traits are not misused with incomplete types.
1843         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
1844         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
1845         base characteristics without assertions that can be reused in other
1846         traits.
1847         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
1848         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
1849         test.
1850         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
1851         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
1852         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
1853         * testsuite/20_util/is_class/value.cc: Check incomplete type.
1854         * testsuite/20_util/is_function/value.cc: Likewise.
1855         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
1856         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
1857         test.
1858         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
1859         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
1860         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
1861         * testsuite/20_util/is_union/value.cc: Likewise.
1862         * testsuite/20_util/is_void/value.cc: Likewise.
1863         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
1864
1865 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
1866
1867         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
1868         Add new private member function.
1869         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
1870         (random_device::_M_init_pretr1(const string&)): Call new private
1871         member with string data.
1872         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
1873         Define.
1874         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
1875         test using COW strings.
1876         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
1877         a value from the device.
1878         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
1879         Fix typo in token string.
1880
1881 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
1882
1883         LWG2788 basic_string spurious use of a default constructible allocator
1884         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
1885         (basic_string::_M_replace_dispatch): Construct temporary string with
1886         the current allocator.
1887         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
1888         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
1889
1890 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
1891
1892         * doc/xml/manual/diagnostics.xml: Update list of headers that define
1893         exception classes.
1894         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
1895         section about new/delete overloads. Improve section on verbose
1896         terminate handler.
1897         * doc/html/*: Regenerate.
1898
1899         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
1900         P0811R3. Change status of P1353R0.
1901         * doc/html/*: Regenerate.
1902
1903         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
1904         documentation of implementation-defined types for [thread.req.native].
1905         * doc/xml/manual/status_cxx2017.xml: Update documentation of
1906         implementation-defined strings for [variant.bad.access]. Fix typo in
1907         documentation of implementation-defined support for [fs.conform.9945].
1908         * doc/html/*: Regenerate.
1909
1910 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
1911
1912         PR libstdc++/85494
1913         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
1914         that fails on mingw-w64.
1915
1916         PR libstdc++/88881
1917         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
1918         (status(const path&, error_code&)): Use parent_path() to remove
1919         trailing slash.
1920         (symlink_status(const path&, error_code&)): Duplicate workaround for
1921         bug in _wstat for paths with trailing slash.
1922         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
1923         with trailing slash.
1924         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
1925         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
1926
1927         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
1928         once instead of building it iteratively.
1929
1930         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
1931
1932         PR libstdc++/85494 use rdseed and rand_s in std::random_device
1933         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
1934         the assembler supports rdseed.
1935         * config.h.in: Regenerate.
1936         * configure: Regenerate.
1937         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
1938         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
1939         * doc/html/*: Regenerate.
1940         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
1941         * include/bits/random.h (random_device::random_device()): Always call
1942         _M_init rather than _M_init_pretr1.
1943         (random_device::random_device(const string&)): Likewise.
1944         (random_device::operator()()): Always call _M_getval().
1945         (random_device::_M_file): Replace first member of union with an
1946         anonymous struct, with _M_file as its first member.
1947         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
1948         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
1949         (USE_MT19937): Define if none of the above are defined.
1950         (USE_POSIX_FILE_IO): Define.
1951         (_M_strtoul): Remove.
1952         [USE_RDSEED] (__x86_rdseed): Define new function.
1953         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
1954         (random_device::_M_init(const string&)): Initialize new union members.
1955         Add support for "rdseed" and "rand_s" tokens. Decide what the
1956         "default" token does according to which USE_* macros are defined.
1957         [USE_POSIX_FILE_IO]: Store a file descriptor.
1958         [USE_MT19937]: Forward to _M_init_pretr1 instead.
1959         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
1960         code from _M_strtoul.
1961         [!USE_MT19937]: Call _M_init, transforming the old default token or
1962         numeric tokens to "default".
1963         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
1964         (random_device::_M_getval()): Use new union members to obtain a
1965         random number from the stored function pointer or file descriptor.
1966         [USE_MT19937]: Obtain a value from the mt19937 engine.
1967         (random_device::_M_getval_pretr1()): Call _M_getval().
1968         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
1969         instead of fileno.
1970         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
1971         * testsuite/26_numerics/random/random_device/85494.cc: New test.
1972
1973 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
1974
1975         PR libstdc++/90634
1976         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
1977         _M_split_cmpts() for a path with multiple components.
1978         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
1979         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
1980         components and reserve space in vector. Return early when there is
1981         only one component.
1982         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
1983         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
1984
1985         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
1986         form of std::equals for C++11 compatibility.
1987
1988 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
1989
1990         * doc/xml/manual/appendix_contributing.xml: Update pointer to
1991         C++ standard at ansi.org.
1992
1993 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
1994
1995         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
1996         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
1997         to "run".
1998
1999         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2000         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2001
2002 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2003
2004         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2005         tests to ...
2006         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2007         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2008         "compile" test to "run".
2009
2010         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2011         * doc/html/*: Regenerate.
2012         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2013         rvalue aliasing constructor.
2014         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2015         (reinterpret_pointer_cast): Add overloads taking rvalues.
2016         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2017         Add rvalue aliasing constructor.
2018         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2019         "run" and check return values as well as types.
2020         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2021         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2022         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2023         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2024         values.
2025
2026         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2027         * doc/xml/manual/intro.xml: Likewise.
2028         * include/std/future (__create_task_state): Add default arguments
2029         to make providing an allocator optional.
2030         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2031         instead of delegating to another constructor.
2032         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2033         define allocator-extended constructors for C++17 and later.
2034         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2035         C++11 and C++14.
2036         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2037         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2038         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2039
2040 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2041
2042         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2043         Don't run the libstdc++/83237 part on simulator targets.
2044
2045 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2046
2047         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2048         P0040R3.
2049         * doc/html/*: Regenerate.
2050
2051         * include/experimental/any (__any_caster): Use RTTI if comparing
2052         addresses fails, to support non-unique addresses in shared libraries.
2053         * include/std/any (__any_caster): Likewise.
2054
2055         PR libstdc++/90220
2056         * include/experimental/any (__any_caster): Constrain to only be
2057         callable for object types. Use remove_cv_t instead of decay_t.
2058         If the type decays or isn't copy constructible, compare the manager
2059         function to a dummy specialization.
2060         (__any_caster): Add overload constrained for non-object types.
2061         (any::_Manager_internal<_Op>): Add dummy specialization.
2062         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2063         and array types.
2064
2065 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2066
2067         PR libstdc++/90557
2068         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2069         reversed arguments to uninitialized_copy_n.
2070         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2071         is unchanged by copy assignment.
2072         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2073         compare path components.
2074
2075         PR libstdc++/77691
2076         * include/experimental/memory_resource: Add system header pragma and
2077         do not define anything unless compiled as C++14 or later.
2078         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2079         (__resource_adaptor_imp::do_allocate): If the requested alignment
2080         is a fundamental alignment then either allocate directly from _M_alloc
2081         or call the new _M_allocate function.
2082         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2083         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2084         of the allocator rebound to a POD type with the specified alignment.
2085         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2086         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2087         Adjust expected allocation sizes.
2088         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2089         xfail for Solaris x86.
2090
2091 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2092
2093         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2094         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2095         Use std::__remove_cvref_t when building with GCC.
2096
2097 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2098
2099         PR libstdc++/90252
2100         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2101         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2102         Use check_v3_target_prop_cached to cache the result of the test.
2103
2104         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2105
2106 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2107
2108         PR libstdc++/90252
2109         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2110         Changed v3_target_compile check from preprocess to executable.
2111         Added "-ltbb" to v3_target_compile flags.
2112
2113 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2114
2115         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2116         Add check for Thread Building Blocks 2018 or later.
2117
2118 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2119
2120         * testsuite/experimental/names.cc: Only include Networking TS headers
2121         on targets with the necessary Gthreads support.
2122
2123 2019-05-20  Marek Polacek  <polacek@redhat.com>
2124
2125         CWG 2094 - volatile scalars are trivially copyable.
2126         PR c++/85679
2127         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2128         result for volatile int.
2129
2130 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2131
2132         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2133         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2134         conditionally.
2135
2136         PR c++/90532 Ensure __is_constructible(T[]) is false
2137         * include/std/type_traits (__do_is_default_constructible_impl)
2138         (__is_default_constructible_atom, __is_default_constructible_safe):
2139         Remove.
2140         (is_default_constructible): Use is_constructible.
2141         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2142         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2143         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2144         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2145         Likewise.
2146
2147 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2148
2149         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2150         to the deallocator with -fsized-deallocation.
2151
2152 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2153
2154         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2155         test by passing correct alignment to deallocate function.
2156
2157 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2158
2159         PR libstdc++/90520
2160         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2161         Raise exception if unique_ptr tuple member has unknown structure.
2162         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2163         Adjust worker to support new __uniq_ptr_data base class. Do not
2164         assume field called _M_head_impl is the first tuple element.
2165
2166 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2167
2168         * include/bits/stl_deque.h
2169         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2170         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2171         (_Deque_base::_Deque_impl_data): New.
2172         (_Deque_base::_Deque_impl): Inherit latter.
2173         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2174         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2175         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2176         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2177         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2178         (deque<>::deque()): Default.
2179         (deque<>::deque(deque&&)): Default.
2180         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2181         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2182         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2183         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2184         _M_range_initialize.
2185         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2186         (deque<>::resize(size_type, const value_type&)): Share a single
2187         implementation.
2188         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2189         _M_range_insert_aux.
2190         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2191         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2192         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2193         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2194
2195 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2196
2197         PR libstdc++/90246
2198         * include/std/variant (holds_alternative, get, get_if): Improve
2199         static assertion messages.
2200         (bad_variant_access::bad_variant_access()): Change default message.
2201         (__throw_bad_variant_access(bool)): New overload.
2202         (get): Use new overload.
2203         (visit, visit<R>): Improve exception message.
2204
2205         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2206         targets. Add more cases from P0608R3.
2207         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2208
2209         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2210         * include/experimental/type_traits (is_detected_exact)
2211         (is_detected_exact_v): Likewise.
2212         * include/pstl/execution_defs.h (is_execution_policy)
2213         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2214         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2215         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2216         * testsuite/experimental/names.cc: New test.
2217
2218         PR libstdc++/85965
2219         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2220         assertions from the destructor.
2221         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2222         Move static_assert for hash function to here.
2223         (_Hash_table_base::_M_equals): Move static_assert for equality
2224         predicate to here.
2225         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2226         Remove.
2227         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2228         the value directly instead of calling _S_value.
2229         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2230         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2231         _S_key(_Const_Link_type).
2232         * testsuite/23_containers/set/85965.cc: Check construction,
2233         destruction, assignment and size() do not trigger the assertions.
2234         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2235         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2236         expected errors.
2237         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2238         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2239         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2240         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2241         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2242         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2243         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2244
2245         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2246         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2247         in C++11.
2248
2249         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2250         P1165R1 entries.
2251         * doc/html/*: Regenerate.
2252         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2253         of decay_t (P0777R1).
2254
2255 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2256
2257         Move from state of allocators (LWG2593)
2258         * include/bits/stl_deque.h
2259         (_Deque_base(_Deque_base&&, false_type)): Remove.
2260         (_Deque_base(_Deque_base&&, true_type)): Remove.
2261         (_Deque_base(_Deque_base&&)): Adapt.
2262         (_Deque_base::_M_move_impl()): Remove.
2263         * testsuite/util/testsuite_allocator.h
2264         (propagating_allocator(propagating_allocator&&)): Preserve move from
2265         state.
2266         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2267         Adapt.
2268         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
2269         Adapt.
2270         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
2271         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
2272         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
2273         Adapt.
2274         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
2275         Adapt.
2276         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
2277         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
2278         (test02): Adapt.
2279         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
2280         (test02): Adapt.
2281         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
2282         (test02): Adapt.
2283         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
2284         (test02): Adapt.
2285         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
2286         Adapt.
2287         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
2288         Adapt.
2289         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
2290         (test02): Adapt.
2291         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
2292         (test02): Adapt.
2293
2294 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
2295
2296         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
2297         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
2298
2299         * include/std/variant (__overload_set): Remove.
2300         (_Arr): New helper.
2301         (_Build_FUN): New class template to define a single FUN overload,
2302         with specializations to prevent unwanted conversions, as per P0608R3.
2303         (_Build_FUNs): New class template to build an overload set of FUN.
2304         (_FUN_type): New alias template to perform overload resolution.
2305         (__accepted_type): Use integer_constant base for failure case. Use
2306         _FUN_type for successful case.
2307         (variant::__accepted_index): Use _Tp instead of _Tp&&.
2308         (variant::variant(_Tp&&)): Likewise.
2309         (variant::operator=(_Tp&&)): Likewise.
2310
2311         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
2312         Replace raw visitation with a runtime check for the valueless state
2313         and a non-raw visitor.
2314         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
2315         (variant::index()): Remove branch.
2316         (variant::swap(variant&)): Use valueless_by_exception() instead of
2317         comparing the index to variant_npos, and add likelihood attribute.
2318
2319         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
2320         (_Hashtable_base::_Equal_hash_code): Define new class template.
2321         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
2322         _Equal_helper.
2323
2324         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
2325         Replace with _M_get non-static member function.
2326         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
2327         member function.
2328         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
2329         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
2330
2331         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
2332         _S_get accessors for members in EBO helpers.
2333         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
2334         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
2335         overloads.
2336         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
2337         helpers.
2338         (_Hashtable_base::_M_eq()): Remove non-const overload.
2339
2340 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
2341
2342         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
2343
2344 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2345
2346         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
2347         Fix return value.
2348
2349 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2350
2351         * config/os/solaris/solaris2.10: Move to ...
2352         * config/os/solaris: ... this.
2353         * configure.host (os_include_dir): Adapt.
2354         (abi_baseline_pair): Remove Solaris 10 handling.
2355         * config/abi/post/i386-solaris2.10: Remove.
2356         * config/abi/post/sparc-solaris2.10: Remove.
2357         * config/abi/post/i386-solaris2.11: Rename to ...
2358         * config/abi/post/i386-solaris: ... this.
2359         * config/abi/post/sparc-solaris2.11: Rename to ...
2360         * config/abi/post/sparc-solaris: ... this.
2361
2362         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
2363         workaround.
2364
2365         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
2366         xfail.
2367
2368 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2369
2370         * include/std/variant (__visit_with_index): Remove typedef.
2371         (__deduce_visit_result): New tag type.
2372         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
2373         visitation of possibly-valueless variants, forwarding to __do_visit
2374         with the relevant tag type.
2375         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
2376         and make lambda return void.
2377         (__variant_construct): Likewise.
2378         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
2379         __raw_idx_visit and make lambda return void.
2380         (_Multi_array::__untag_result): Add metafunction to check the function
2381         pointer type for a tag type that dictates the kind of visitation.
2382         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
2383         Use decltype(auto) instead of tagged function pointer type.
2384         (__gen_vtable_impl): Remove bool non-type parameter and unused
2385         _Variant_tuple parameter.
2386         (__gen_vtable_impl::__visit_invoke_impl): Remove.
2387         (__gen_vtable_impl::__do_visit_invoke): Remove.
2388         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
2389         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
2390         for the visit<R> case, rather than dispatching to separate functions.
2391         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
2392         lambda return void.
2393         (variant::swap): Likewise.
2394         (__do_visit): Replace two non-type template parameters with a single
2395         type parameter, so that the caller must specify the visitor's return
2396         type (or one of the tag types).
2397         (visit): Deduce a return type from the visitor and use the
2398         __deduce_visit_result tag to enforce that all overloads return the
2399         same type.
2400         (visit<R>): Call __do_visit<R> with explicit result type.
2401         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
2402         lambda return void.
2403
2404 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2405
2406         nonesuch is insufficiently useless (lwg2996)
2407         * include/std/type_traits (struct __nonesuch): Added private base
2408         class to make __nonesuch not an aggregate and removed deleted default
2409         constructor.
2410         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
2411         (operator=(const pair&)): Use __nonesuch instead of
2412         __nonesuch_no_braces.
2413         (operator=(pair&&)): Likewise
2414         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
2415         of __nonesuch_no_braces.
2416         (operator=(tuple&&)): Likewise
2417         * include/experimental/type_traits (struct nonesuch): Added private
2418         base class to make nonesuch not an aggregate and removed deleted
2419         default constructor.
2420         * testsuite/20_util/nonesuch/nonesuch.cc: New.
2421         * testsuite/experimental/type_traits/nonesuch.cc: New.
2422
2423 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2424
2425         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
2426         (_Function_handler): Remove partial specializations for void return
2427         types and pointers to member.
2428         (_Function_handler::_M_manager): Adapt to removal of
2429         _Simple_type_wrapper.
2430         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
2431         * include/std/functional (_Bind_result::__enable_if_void)
2432         (_Bind_result::__disable_if_void): Remove sfinae helpers.
2433         (_Bind_result::__call): Use __invoke_r and remove overloads for void
2434         return types.
2435         * include/std/future (__future_base::_Task_state::_M_run)
2436         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
2437         change return type of lambda expressions.
2438
2439         * include/bits/invoke.h (__invoke_r): Define new function implementing
2440         the INVOKE<R> pseudo-function.
2441         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
2442         * testsuite/20_util/function_objects/invoke/2.cc: New test.
2443
2444         * include/std/type_traits (__is_nt_convertible_helper): Define it
2445         unconditionally, not only for C++20.
2446         (__is_nothrow_convertible): Define internal trait for use in C++11.
2447         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
2448         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
2449         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
2450         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
2451         that has nothrow explicit conversion but potentially-throwing implicit
2452         conversion.
2453         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
2454         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
2455         function to only consider implicit conversions.
2456         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
2457
2458         * include/std/iterator: Include <iosfwd> instead of <istream> and
2459         <ostream>.
2460
2461         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
2462         Remove unused, non-standard function.
2463
2464         * include/bits/regex.h (match_results::max_size()): Adjust return
2465         value to account for prefix/suffix/unmatched subs.
2466         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
2467         reset the contained sub matches.
2468         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
2469         function to set result state following a failed match.
2470         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
2471         sub_match states after _M_resize. Use _M_establish_failed_match.
2472
2473         PR libstdc++/69724
2474         * include/std/thread (thread::_State_impl, thread::_S_make_state):
2475         Replace single _Callable parameter with variadic _Args pack, to
2476         forward them directly to the tuple of decayed copies.
2477         * testsuite/30_threads/thread/cons/69724.cc: New test.
2478
2479 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2480
2481         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
2482         * include/bits/basic_string.h: (operator=(const basic_string&):
2483         Move allocator decision to assign.
2484         (assign(const basic_string&)): Move allocator decision here.
2485         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
2486         Add tests.
2487         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
2488         Add tests.
2489
2490 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2491
2492         * testsuite/util/testsuite_allocator.h (memory_resource)
2493         (default_resource_mgr): Fix indentation.
2494
2495         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
2496         Use operator-> to access raw pointer member.
2497         * testsuite/23_containers/vector/59829.cc: Likewise.
2498         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
2499         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
2500         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
2501         for tests.
2502         (PointerBase, PointerBase_void): Derive from NullablePointer and use
2503         its constructors and equality operators. Change converting
2504         constructors to use operator-> to access private member of the other
2505         pointer type.
2506         (PointerBase_void::operator->()): Add, for access to private member.
2507         (operator-(PointerBase, PointerBase)): Change to hidden friend.
2508         (operator==(PointerBase, PointerBase)): Remove.
2509         (operator!=(PointerBase, PointerBase)): Remove.
2510
2511         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
2512         not assume field called _M_head_impl is the first tuple element.
2513         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
2514         implementation more accurate.
2515         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
2516         empty pointer type and non-empty deleter.
2517
2518         LWG 2899 - Make is_move_constructible correct for unique_ptr
2519         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
2520         move assignment operator.
2521         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
2522         (__uniq_ptr_data): New class template with conditionally deleted
2523         special members.
2524         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
2525         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
2526         constructor and move assignment operator as defaulted.
2527         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
2528         __uniq_ptr_impl::release().
2529         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
2530         to __uniq_ptr_impl::reset(pointer).
2531         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2532         Check for new __uniq_ptr_data type.
2533         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
2534
2535 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2536
2537         PR libstdc++/90454.cc path construction from void*
2538         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
2539         pointers to void are rejected as well as void.
2540         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
2541         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
2542         pointers to void.
2543         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
2544
2545         * doc/xml/manual/policy_data_structures.xml: Comment out stray
2546         <remark> elements. Fix formatting of bibliography references.
2547
2548 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
2549
2550         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
2551
2552 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2553
2554         Remove Profile Mode, deprecated since 7.1.0
2555         * doc/Makefile.am: Remove XML file for profile mode docs.
2556         * doc/Makefile.in: Regenerate.
2557         * doc/xml/authors.xml: Remove authors of profile mode docs.
2558         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
2559         mode.
2560         * doc/xml/manual/debug.xml: Likewise.
2561         * doc/xml/manual/evolution.xml: Document removal of profile mode.
2562         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
2563         * doc/xml/manual/spine.xml: Remove profile mode author credit.
2564         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
2565         directive.
2566         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
2567         macro.
2568         * doc/html/*: Regenerate.
2569         * include/Makefile.am: Remove profile mode headers.
2570         * include/Makefile.in: Regenerate.
2571         * include/bits/c++config (std::__profile): Remove namespace.
2572         [_GLIBCXX_PROFILE]: Remove checks for macro.
2573         * include/profile/array: Remove.
2574         * include/profile/base.h: Remove.
2575         * include/profile/bitset: Remove.
2576         * include/profile/deque: Remove.
2577         * include/profile/forward_list: Remove.
2578         * include/profile/impl/profiler.h: Remove.
2579         * include/profile/impl/profiler_algos.h: Remove.
2580         * include/profile/impl/profiler_container_size.h: Remove.
2581         * include/profile/impl/profiler_hash_func.h: Remove.
2582         * include/profile/impl/profiler_hashtable_size.h: Remove.
2583         * include/profile/impl/profiler_list_to_slist.h: Remove.
2584         * include/profile/impl/profiler_list_to_vector.h: Remove.
2585         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
2586         * include/profile/impl/profiler_node.h: Remove.
2587         * include/profile/impl/profiler_state.h: Remove.
2588         * include/profile/impl/profiler_trace.h: Remove.
2589         * include/profile/impl/profiler_vector_size.h: Remove.
2590         * include/profile/impl/profiler_vector_to_list.h: Remove.
2591         * include/profile/iterator_tracker.h: Remove.
2592         * include/profile/list: Remove.
2593         * include/profile/map: Remove.
2594         * include/profile/map.h: Remove.
2595         * include/profile/multimap.h: Remove.
2596         * include/profile/multiset.h: Remove.
2597         * include/profile/ordered_base.h: Remove.
2598         * include/profile/set: Remove.
2599         * include/profile/set.h: Remove.
2600         * include/profile/unordered_base.h: Remove.
2601         * include/profile/unordered_map: Remove.
2602         * include/profile/unordered_set: Remove.
2603         * include/profile/vector: Remove.
2604         * scripts/run_doxygen: Do not process profile mode headers.
2605         * testsuite/23_containers/array/element_access/60497.cc: Don't use
2606         profile mode type.
2607         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
2608         Remove dg-skip-if for profile mode.
2609         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
2610         preprocessor check for profile mode.
2611         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
2612         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
2613         for profile mode.
2614         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
2615         Likewise.
2616         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
2617         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
2618         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
2619         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
2620         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
2621         Likewise.
2622         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
2623         Likewise.
2624         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
2625         Likewise.
2626         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
2627         Likewise.
2628         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
2629         preprocessor check for profile mode.
2630         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
2631         Likewise.
2632         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
2633         Remove dg-skip-if for profile mode.
2634         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
2635         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
2636         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
2637         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
2638         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
2639         * testsuite/Makefile.am: Remove profile_flags variable and
2640         * testsuite/Makefile.am: Remove profile_flags variable and
2641         check-profile target.
2642         * testsuite/Makefile.in: Regenerate.
2643         * testsuite/ext/profile/all.cc: Remove.
2644         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
2645         * testsuite/ext/profile/profiler_algos.cc: Remove.
2646         * testsuite/ext/profile/replace_new.cc: Remove.
2647         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
2648         preprocessor check for profile mode.
2649         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
2650         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
2651         (check_v3_target_normal_mode): Do not check for profile mode macro.
2652         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
2653         profile mode.
2654         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
2655         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2656         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2657         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
2658         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
2659         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2660         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2661         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2662         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2663         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
2664
2665         Remove array_allocator extension, deprecated since 4.9.0
2666         * doc/xml/manual/allocator.xml: Remove documentation for
2667         array_allocator.
2668         * doc/xml/manual/evolution.xml: Document array_allocator removal.
2669         * doc/xml/manual/using.xml: Remove header from documentation.
2670         * include/Makefile.am: Remove <ext/array_allocator.h> header.
2671         * include/Makefile.in: Regenerate.
2672         * include/ext/array_allocator.h: Remove.
2673         * include/precompiled/extc++.h: Do not include removed header.
2674         * testsuite/ext/array_allocator/1.cc: Remove.
2675         * testsuite/ext/array_allocator/2.cc: Remove.
2676         * testsuite/ext/array_allocator/26875.cc: Remove.
2677         * testsuite/ext/array_allocator/3.cc: Remove.
2678         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
2679         * testsuite/ext/array_allocator/check_delete.cc: Remove.
2680         * testsuite/ext/array_allocator/check_new.cc: Remove.
2681         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
2682         * testsuite/ext/headers.cc: Do not include removed header.
2683
2684 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
2685
2686         * include/bits/stl_bvector.h
2687         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2688         Make hidden friend.
2689         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2690         Likewise.
2691         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2692         Likewise.
2693         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2694         Likewise.
2695         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2696         Likewise.
2697         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2698         Likewise.
2699         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2700         Likewise.
2701         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
2702         copy elision.
2703         (_Bit_iterator::operator-(difference_type)): Likewise.
2704         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
2705         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
2706         NRVO copy elision.
2707         (_Bit_const_iterator::operator-(difference_type)): Likewise.
2708         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
2709
2710 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
2711
2712         PR libstdc++/81266
2713         * testsuite/util/thread/all.h: Do not use remove_pointer for
2714         std::thread::native_handle_type.
2715
2716         PR libstdc++/90397
2717         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
2718         (_Variant_storage<true, Types...>::_M_reset()))
2719         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
2720         (__get_storage): Likewise.
2721         (variant): Add noexcept to friend declarations for __get and
2722         __get_storage.
2723
2724         PR libstdc++/90388
2725         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
2726         Use _Require for constraints.
2727         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
2728         per the standard.
2729         (__uniq_ptr_hash): New base class with conditionally-disabled call
2730         operator.
2731         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
2732         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
2733         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
2734
2735         * include/bits/shared_ptr.h: Improve docs.
2736         * include/bits/shared_ptr_base.h: Likewise.
2737         * include/bits/stl_uninitialized.h: Likewise.
2738         * include/bits/unique_ptr.h: Likewise.
2739         * libsupc++/new: Likewise.
2740
2741 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
2742
2743         * include/bits/stl_deque.h
2744         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2745         Make hidden friend.
2746         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2747         Likewise.
2748         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2749         Likewise.
2750         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2751         Likewise.
2752         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2753         Likewise.
2754         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2755         Likewise.
2756         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
2757         copy elision.
2758         (_Deque_iterator<>::operator-(difference_type)): Likewise.
2759
2760 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
2761
2762         PR libstdc++/90277
2763         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
2764         (test01): Reserve for number of insertions to avoid rehash during test.
2765         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
2766         (test01): Likewise.
2767         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
2768         (test01): Likewise.
2769         (test02): Likewise.
2770         (test03): Likewise.
2771
2772 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
2773
2774         * include/experimental/bits/fs_path.h: Improve docs.
2775         * include/experimental/bits/net.h: Fix wrong header name in comment.
2776         Do not document implementation details.
2777         * include/experimental/netfwd: Fix doxygen grouping.
2778
2779 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
2780
2781         * include/bits/stl_pair.h: Improve docs.
2782         * include/std/tuple: Likewise.
2783
2784         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
2785         inline namespace.
2786         * include/std/chrono: Improve docs.
2787         * include/std/ratio: Do not document implementation details.
2788         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
2789         line numbers.
2790         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
2791
2792         PR libstdc++/89102
2793         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
2794         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
2795         (__duration_common_type): New helper.
2796         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
2797         __duration_common_type.
2798         (__timepoint_common_type_wrapper): Replace with ...
2799         (__timepoint_common_type): New helper.
2800         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
2801         Use __time_point_common_type.
2802         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
2803         (__common_type_impl): If either argument is transformed by decay,
2804         use the common_type of the decayed types.
2805         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
2806         decayed, use __do_common_type_impl to get the common_type.
2807         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
2808         (__do_member_type_wrapper, __member_type_wrapper)
2809         (__expanded_common_type_wrapper): Remove.
2810         (__common_type_pack, __common_type_fold): New helpers.
2811         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
2812         __member_type_wrapper and __expanded_common_type_wrapper.
2813         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
2814         Test zero-length template argument list.
2815         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
2816         Test single argument cases and argument types that should decay.
2817         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
2818         Adjust expected error.
2819         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
2820         dg-error lineno.
2821         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
2822         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
2823         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
2824
2825         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
2826
2827 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2828
2829         Make allocator propagation more consistent for
2830         operator+(basic_string) (P1165R1)
2831         * include/bits/basic_string.h
2832         (operator+(basic_string&&, basic_string&&): Changed resulting
2833         allocator to always be the one from the first parameter.
2834         * include/bits/basic_string.tcc
2835         (operator+(const _CharT*, const basic_string&)): Changed
2836         resulting allocator to be SOCCC on the second parameter's allocator.
2837         (operator+(_CharT, const basic_string&)): Likewise.
2838         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
2839         New.
2840         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
2841         New.
2842
2843 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
2844
2845         * include/bits/regex.h: Improve docs.
2846         * include/bits/regex.tcc: Do not document implementation details.
2847
2848         * testsuite/19_diagnostics/error_code/hash.cc: New test.
2849
2850 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
2851
2852         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
2853         Add type printer for container types in std::__debug namespace.
2854         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
2855         (gdb-tests): Use distinct parameters for the type of test and use of
2856         regex.
2857         (gdb-test): Check for regex test even if 'whatis' test.
2858         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
2859         mode.
2860         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2861         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2862         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2863         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2864         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2865         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2866         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
2867
2868 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
2869
2870         * include/std/system_error (error_category): Fix comment.
2871
2872         PR libstdc++/90299
2873         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
2874         argument is an empty path.
2875         (absolute(const path&, error_code&)): Use invalid_argument as error
2876         code instead of no_such_file_or_directory.
2877         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
2878         of non-existent paths and empty paths with both overloads of absolute.
2879
2880         * include/std/system_error (error_category, error_code)
2881         (error_condition): Improve docs.
2882         * libsupc++/exception: Add missing @addtogroup Doxygen command.
2883         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
2884         to class documentation. Suppress documentation for implementation
2885         details.
2886         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
2887         Suppress documentation for implementation details.
2888
2889         * include/std/system_error (error_code): Remove friend declaration
2890         for hash<error_code>.
2891         (hash<error_code>::operator()): Use public member functions to access
2892         value and category.
2893         (hash<error_condition>::operator()): Use address of category, not
2894         its object representation.
2895         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
2896         Use public member functions to access value and category.
2897         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
2898
2899 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
2900
2901         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
2902         * include/bits/hashtable_policy.h
2903         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
2904         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
2905         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
2906         smaller than input value rather than always greater. Preserve
2907         _M_next_resize if called with 0 input. Use __builtin_floorl.
2908         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
2909         elements + number of insertions is greater than _M_next_resize. Start
2910         with 11 buckets if not told otherwise. Use __builtin_floorl.
2911         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
2912         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
2913         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
2914         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
2915         told otherwise. Use __builtin_floorl.
2916         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
2917         to also validate _Power2_rehash_policy.
2918         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
2919         Adapt.
2920
2921 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
2922
2923         PR libstdc++/61761
2924         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
2925         std::copysign.
2926
2927         PR libstdc++/52119
2928         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
2929         overflow warning with -Wpedantic -Wsystem-headers.
2930
2931 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
2932
2933         PR libstdc++/90314
2934         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
2935         * include/bits/move.h (swap): Remove extra parentheses.
2936
2937         * include/experimental/bits/lfts_config.h: Improve doc markup.
2938         * include/experimental/optional: Improve docs.
2939         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
2940         (__constexpr_addressof): Remove.
2941         (optional::operator->()): Use std::__addressof().
2942         * include/std/optional (optional::operator->()): Adjust whitespace.
2943         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
2944         that operator-> is still constexpr with overloaded operator&. Change
2945         to compile-only test.
2946         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
2947         compile-only test.
2948
2949         * include/bits/shared_ptr.h: Improve docs.
2950         * include/bits/shared_ptr_atomic.h: Likewise.
2951         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
2952
2953         * include/bits/basic_string.h: Fix iterator/index confusion in
2954         Doxygen comments.
2955         * include/bits/range_access.h: Fix Doxygen warnings.
2956         * include/bits/refwrap.h: Do not document implementation details.
2957         (ref, cref): Group docs with reference_wrapper.
2958         * include/std/fstream: Fix Doxygen markup.
2959         * libsupc++/initializer_list (begin, end): Group docs with
2960         initializer_list.
2961
2962         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
2963
2964         * include/bits/unique_lock.h: Fix/improve doxygen markup.
2965         * include/std/mutex: Likewise.
2966         * include/std/shared_mutex: Likewise.
2967
2968         * include/bits/fs_dir.h: Fix/improve doxygen markup.
2969         * include/bits/fs_fwd.h: Likewise.
2970         * include/bits/fs_ops.h: Likewise.
2971         * include/bits/fs_path.h: Likewise.
2972         * include/std/filesystem: Likewise.
2973
2974         * include/experimental/bits/net.h: Fix/improve doxygen markup.
2975         * include/experimental/buffer: Likewise.
2976         * include/experimental/executor: Likewise.
2977         * include/experimental/internet: Likewise.
2978         * include/experimental/io_context: Likewise.
2979         * include/experimental/net: Likewise.
2980         * include/experimental/netfwd: Likewise.
2981         * include/experimental/socket: Likewise.
2982         * include/experimental/timer: Likewise.
2983
2984         * doc/doxygen/doxygroups.cc: Move description of experimental group
2985         here.
2986         * include/experimental/algorithm: Add to libfund-ts doc group.
2987         * include/experimental/any: Likewise. Do not document implementation
2988         details.
2989         * include/experimental/array: Add to libfund-ts doc group.
2990         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
2991         for Library Fundamentals.
2992         * include/experimental/chrono: Add to libfund-ts doc group.
2993         * include/experimental/deque: Likewise.
2994         * include/experimental/forward_list: Likewise.
2995         * include/experimental/functional: Likewise.
2996         * include/experimental/iterator: Likewise.
2997         * include/experimental/list: Likewise.
2998         * include/experimental/map: Likewise.
2999         * include/experimental/memory: Likewise.
3000         * include/experimental/memory_resource: Likewise. Improve docs.
3001         details.
3002         * include/experimental/numeric: Add to libfund-ts doc group.
3003         * include/experimental/optional: Likewise.
3004         * include/experimental/propagate_const: Likewise.
3005         * include/experimental/random: Likewise.
3006         * include/experimental/ratio: Likewise.
3007         * include/experimental/regex: Likewise.
3008         * include/experimental/set: Likewise.
3009         * include/experimental/source_location: Likewise.
3010         * include/experimental/string: Likewise.
3011         * include/experimental/string_view: Likewise.
3012         * include/experimental/system_error: Likewise.
3013         * include/experimental/tuple: Likewise.
3014         * include/experimental/type_traits: Likewise.
3015         * include/experimental/unordered_map: Likewise.
3016         * include/experimental/unordered_set: Likewise.
3017         * include/experimental/utility: Likewise.
3018         * include/experimental/vector: Likewise.
3019         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3020         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3021         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3022         Likewise.
3023         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3024         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3025         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3026         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3027         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3028
3029         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3030         * include/experimental/bits/fs_fwd.h: Improve docs.
3031         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3032         * include/experimental/bits/fs_path.h: Likewise.
3033         (path, filesystem_error, u8path): Improve docs.
3034         * include/experimental/filesystem: Link to docs for TS.
3035
3036         * config/allocator/new_allocator_base.h (__allocator_base): Add
3037         workaround for Doxygen bug #6945.
3038         * include/std/memory: Improve docs. Define group for pointer safety.
3039         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3040         conditional to suppress documentation for implementation details.
3041
3042         * include/bits/specfun.h: Improve docs.
3043         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3044         and namespaces.
3045
3046         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3047         (std::experimental): Add docs.
3048         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3049         namespace to nothing when generating docs.
3050         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3051         * include/std/chrono (std::chrono): Likewise.
3052         * include/std/functional (std::placeholders): Likewise.
3053         * include/std/thread (std::this_thread): Likewise.
3054
3055         * include/parallel/settings.h: Fix Doxygen markup.
3056
3057         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3058         anything unless PB_DS_CLASS_C_DEC is defined.
3059         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3060         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3061         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3062         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3063         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3064         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3065         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3066         Likewise.
3067         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3068         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3069         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3070         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3071         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3072         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3073         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3074         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3075         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3076         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3077         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3078         Likewise.
3079         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3080         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3081         Likewise.
3082         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3083         Likewise.
3084
3085         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3086         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3087         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3088         Doxygen expands.
3089
3090 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3091
3092         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3093         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3094         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3095         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3096         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3097         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3098         Likewise.
3099         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3100         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3101         Likewise.
3102
3103 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3104
3105         PR libstdc++/61761
3106         * include/std/complex (__complex_proj): Return parameter unchanged.
3107         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3108         floating-point types to take std::complex arguments.
3109         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3110         floating-point types.
3111         * testsuite/26_numerics/complex/proj.cc: New test.
3112
3113 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3114
3115         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3116         to _Lock_policyE[012].
3117         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3118
3119 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3120
3121         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3122         macros accidentally left in.
3123         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3124         unnecessary -lstdc++fs option. Fix test for mingw.
3125         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3126         Fix test for mingw.
3127
3128 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3129
3130         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3131
3132 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3133
3134         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3135
3136         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3137         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3138
3139         PR libstdc++/71312
3140         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3141
3142         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3143         attribute.
3144
3145         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3146         class template and partial specialization.
3147
3148         PR libstdc++/87982
3149         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3150         an integral type.
3151         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3152         functions to convert a value to an integral type.
3153         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3154         (fill_n): Convert _Size parameter to an integral type.
3155         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3156         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3157         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3158         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3159         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3160         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3161
3162 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3163
3164         Adding noexcept-specification on tuple constructors (LWG 2899)
3165         * libstdc++-v3/include/std/tuple:
3166         (tuple()): Add noexcept-specification.
3167         (tuple(const _Elements&...)): Likewise
3168         (tuple(_UElements&&...)): Likewise
3169         (tuple(const tuple<_UElements...>&)): Likewise
3170         (tuple(tuple<_UElements...>&&)): Likewise
3171         (tuple(const _T1&, const _T2&)): Likewise
3172         (tuple(_U1&&, _U2&&)): Likewise
3173         (tuple(const tuple<_U1, _U2>&): Likewise
3174         (tuple(tuple<_U1, _U2>&&): Likewise
3175         (tuple(const pair<_U1, _U2>&): Likewise
3176         (tuple(pair<_U1, _U2>&&): Likewise
3177         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3178
3179 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3180
3181         PR libstdc++/87106
3182         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3183         arguments with __restrict.
3184
3185 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3186
3187         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3188
3189 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3190
3191         * include/experimental/bits/fs_path.h
3192         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3193         avoid redundant call to _S_convert_loc with non-const pointers.
3194
3195         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3196         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3197         * testsuite/21_strings/basic_string/hash/hash.cc
3198         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3199         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3200         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3201
3202         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3203         wstring::_M_replace_dispatch with more specific patterns.
3204         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3205         Create const std::string to avoid redundant call to _S_convert_loc
3206         with non-const pointers.
3207         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3208         avoid unnecessary basic_string::assign instantiations.
3209
3210         * include/std/memory (__uses_alloc_args): Add string-literal to
3211         static_assert, to match the one in __uses_alloc.
3212         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3213         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3214         for recursive uses-allocator construction of nested pairs.
3215         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3216         comment.
3217
3218 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3219
3220         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3221         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3222         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3223         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3224
3225         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3226         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3227         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3228         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3229         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3230         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3231         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3232
3233 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3234
3235         PR libstdc++/90239
3236         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3237         * include/std/scoped_allocator [__cplusplus > 201703L]
3238         (scoped_allocator_adaptor::construct): Define in terms of
3239         uses_allocator_construction_args, as per P0591R4.
3240         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3241         * testsuite/util/testsuite_allocator.h: Remove name of unused
3242         parameter.
3243
3244 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3245
3246         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3247         * doc/html/*: Regenerate.
3248
3249         * include/bits/fs_path.h (operator<, operator<=, operator>)
3250         (operator>=, operator==, operator!=): Make hidden friends, as per
3251         LWG 3065.
3252         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3253         string type in test.
3254         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3255
3256         * include/std/any (any::any(ValueType&&)): Use __and_v.
3257         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3258         Likewise.
3259
3260         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3261         as per P0777R1.
3262         * include/std/type_traits (__result_of_memfun): Use remove_reference
3263         instead of __remove_cvref_t and remove redundant is_same check.
3264         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3265
3266         * include/experimental/string_view (basic_string_view::pointer)
3267         (basic_string_view::reference): Fix to refer to non-const value_type.
3268         * include/bits/basic_string.h (basic_string): Use __sv_check and
3269         __sv_limit instead of basic_string_view::_M_check and
3270         basic_string_view::_M_limit.
3271         * include/std/string_view (__sv_check, __sv_limit): New
3272         helper functions to replace basic_string_view::_M_check and
3273         basic_string_view::_M_limit.
3274         (basic_string_view): Add static assertions to enforce ill-formed
3275         requirement for traits_type::char_type from P1148R0, and to enforce
3276         required properties of char-like types.
3277         (basic_string_view::pointer, basic_string_view::reference): Fix to
3278         refer to non-const value_type.
3279         (basic_string_view::operator[], basic_string_view::at)
3280         (basic_string_view::front, basic_string_view::back)
3281         (basic_string_view::data): Use const_reference and const_pointer
3282         typedefs for return types.
3283         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
3284         (hash<wstring_view>): Fix argument_type typedef.
3285         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3286         char/1.cc: Fix expected return type of basic_string_view::data().
3287         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3288         wchar_t/1.cc: Likewise.
3289         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3290         char/1.cc: Likewise.
3291         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3292         wchar_t/1.cc: Likewise.
3293         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
3294         New test.
3295         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
3296         Check reference and pointer typedefs.
3297         * testsuite/experimental/string_view/requirements/typedefs.cc:
3298         Likewise.
3299         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
3300         Fix expected return type of basic_string_view::data().
3301         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
3302         1.cc: Likewise.
3303         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
3304         Likewise.
3305         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
3306         1.cc: Likewise.
3307
3308         PR libstdc++/90220
3309         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
3310         Avoid a runtime check for types that can never be stored in std::any.
3311         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3312         array types.
3313
3314         PR libstdc++/90220 (partial)
3315         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
3316         not attempt ill-formed static_cast to pointers to non-object types.
3317         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3318         function types.
3319
3320         * testsuite/20_util/variant/run.cc: Catch exception by reference to
3321         prevent -Wcatch-value warning.
3322
3323         * include/std/variant (__variant_construct): Use template parameter
3324         type instead of equivalent decltype-specifier.
3325         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
3326         Replace forward with move.
3327         (_Move_ctor_base<false, Types...>::_M_destructive_move)
3328         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
3329         (_Move_ctor_base<true, Types...>::_M_destructive_move)
3330         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
3331         index after construction succeeds.
3332         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
3333         if-constexpr checks that are always true. Use __remove_cvref_t instead
3334         of remove_reference so that is_nothrow_move_constructible check
3335         doesn't use a const rvalue parameter. In the potentially-throwing case
3336         construct a temporary and move assign it, as per LWG 2904.
3337         (_Move_assign_base<false, Types...>::operator=): Remove redundant
3338         if-constexpr checks that are always true. Use emplace as per LWG 2904.
3339         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
3340         construct a temporary and move assign from it, as per LWG 2904.
3341         * testsuite/20_util/variant/exception_safety.cc: Check that
3342         assignment operators have strong exception safety guarantee.
3343
3344 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
3345
3346         Document PSTL linker flags
3347
3348         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
3349
3350 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3351
3352         * include/std/variant (__detail::__variant::_Traits): Make
3353         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
3354         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
3355         P0602R4.
3356         (__detail::__variant::_Copy_assign_alias): Only depend on
3357         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
3358         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
3359         move assignment operators.
3360
3361         PR libstdc++/90165
3362         * include/std/variant (variant::__not_self): New helper for the
3363         is_same_v<remove_cvref_t<T>, variant>==false constraints.
3364         (variant::__to_type_impl): Remove.
3365         (variant::__to_type): Add default argument to check pack size, instead
3366         of using __to_type_impl.
3367         (variant::__accepted_type): Add default argument using __not_self.
3368         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
3369         for variant(T&&) constructor constraint.
3370         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
3371         Extract __accepted_type into a named template parameter for reuse in
3372         other constraints and in the exception specification.
3373         (variant::variant(in_place_type_t<T>, Args&&...))
3374         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
3375         (variant::variant(in_place_index_t<T>, Args&&...))
3376         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
3377         (variant::operator=T&&)): Remove redundant && from trait arguments.
3378         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
3379         isn't used for in_place_type or in_place_index arguments.
3380
3381         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
3382         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
3383         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
3384
3385 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
3386             Bernd Edlinger  <bernd.edlinger@hotmail.de>
3387             Jakub Jelinek  <jakub@redhat.com>
3388
3389         PR target/89093
3390         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
3391         general-regs-only target attribute for ARM.
3392
3393 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3394
3395         PR libstdc++/87431
3396         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
3397         specialization also depend on is_nothrow_move_constructible.
3398         * include/std/variant (__detail::__variant::__never_valueless()):
3399         Only true if the variant would have a move assignment operator.
3400         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
3401         Check __never_valueless<T...>().
3402         (variant::emplace): Only perform non-throwing move assignments
3403         for never-valueless alternatives if the variant has a move assignment
3404         operator.
3405         * testsuite/20_util/variant/compile.cc: Check that never-valueless
3406         types can be emplaced into non-assignable variants.
3407         * testsuite/20_util/variant/run.cc: Check that never-valueless types
3408         don't get copied when emplaced into non-assignable variants.
3409
3410         * include/std/variant (__detail::__variant::__ref_cast): Remove
3411         unused function.
3412         (__detail::__variant::_Uninitialized::_M_get)
3413         (__detail::__variant::__get)
3414         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
3415
3416 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
3417
3418         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
3419         to Darwin10.
3420         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
3421         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
3422         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
3423         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
3424
3425 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3426
3427         Delegate PSTL configuration to pstl/pstl_config.h
3428
3429         * include/bits/c++config: Remove explicit PSTL configuration
3430         macros and use definitions from <pstl/pstl_config.h>.
3431
3432 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3433
3434         Cleanup algorithm implementations
3435         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
3436         execution policy.
3437         (mismatch): Forward execution policy.
3438         (equal): Qualify call to std::equal().
3439         (partial_sort): Forward execution policy.
3440         (inplace_merge): Forward execution policy.
3441
3442 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
3443
3444         Improve implementation of parallel equal()
3445         * include/pstl/algorithm_impl.h
3446         (__internal::__brick_equal): use "4 iterator" version of
3447         std::equal().
3448         (__internal::__brick_equal): use simd for random access
3449         iterators on unsequenced execution policies.
3450         (__internal::__pattern_equal): add "4 iterator" version
3451         (__internal::__pattern_equal): dispatch to simd __brick_equal
3452         for vector-only execution policies.
3453         (__internal::__pattern_equal): dispatch to __parallel_or for
3454         parallel execution policies.
3455         * include/pstl/glue_algorithm_impl.h
3456         (std::equal): dispatch to "4 iterator" version of
3457         __internal::__pattern_equal().
3458
3459 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
3460
3461         PR libstdc++/90105
3462         * include/bits/forward_list.h (operator==): Do not use operator!= to
3463         compare elements.
3464         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
3465         earlier in the list, so that sort is stable.
3466         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
3467         * testsuite/23_containers/forward_list/comparable.cc: Test with
3468         types that meet the minimum EqualityComparable and LessThanComparable
3469         requirements. Remove irrelevant comment.
3470
3471         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
3472         Do not depend on whether all alternative types are move constructible.
3473         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
3474         from the operand when deciding whether to perform the assignment.
3475         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
3476         with deleted move constructor and deleted move assignment operator.
3477         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
3478         behaviour of variants with DeletedMoves as an alternative.
3479         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
3480         (move_ctor, move_assign): Check that moving a variant with a
3481         DeletedMoves alternative falls back to copying instead of moving.
3482
3483         * testsuite/20_util/variant/compile.cc: Remove empty string literals
3484         from static_assert declarations.
3485
3486         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
3487         actually match its name.
3488         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
3489         (test_swap()): Fix result for MoveCtorOnly and check
3490         MoveCtorAndSwapOnly.
3491
3492         * include/std/optional (optional::value_or(U&&) &&): Add missing
3493         constexpr specifier.
3494         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
3495         for disengaged optionals and rvalue optionals.
3496         * testsuite/20_util/optional/observers/4.cc: Likewise.
3497
3498 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
3499
3500         * include/pstl/algorithm_impl.h: Uglify identfiers.
3501         * include/pstl/numeric_impl.h:  Uglify identfiers.
3502         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
3503
3504 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
3505
3506         * include/bits/c++config:
3507         Add definition for __PSTL_ASSERT.
3508         Add definition for __PSTL_ASSERT_MSG.
3509         * include/pstl/algorithm_impl.h: Replace use of assert().
3510         * include/pstl/numeric_impl.h: Replace use of assert().
3511         * include/pstl/parallel_backend_tbb.h:
3512         Replace use of assert().
3513         Replace use of __TBB_ASSERT().
3514         * include/pstl/parallel_backend_utils.h: Replace use of assert().
3515
3516 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
3517
3518         PR libstdc++/90046
3519         * src/c++17/memory_resource.cc
3520         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
3521         needed to allow placing a _Chunk at the end of the buffer.
3522         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
3523
3524 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
3525
3526         * doc/xml/faq.xml: Add information about emergency EH pool.
3527         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
3528         Move outdated information on mt_allocator to a separate section.
3529         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
3530         doesn't affect the default allocator.
3531
3532         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
3533         typo.
3534
3535         PR libstdc++/89851
3536         * testsuite/20_util/variant/89851.cc: New test.
3537
3538 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
3539
3540         * include/std/variant: Adjust whitespace. Add comments.
3541         (_Multi_array): Leave primary template undefined.
3542         (_Multi_array<_Tp>): Define partial specialization for base case of
3543         recursion.
3544         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
3545         which is always a reference.
3546         (__gen_vtable::_S_apply()): Remove function, inline body into
3547         default member initializer.
3548         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
3549
3550         * include/std/variant (__variant_idx_cookie): Add member type.
3551         (__visitor_result_type): Remove.
3552         (__do_visit): Use invoke_result instead of __visitor_result_type.
3553         * testsuite/20_util/variant/visit.cc: New test.
3554
3555         PR libstdc++/90008
3556         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
3557         unused capture.
3558         * testsuite/20_util/variant/90008.cc: New test.
3559
3560 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
3561
3562         * include/pstl/algorithm_impl.h: Add namespace qualification.
3563         * include/pstl/execution_defs.h: Add namespace qualification.
3564         * include/pstl/execution_impl.h: Add namespace qualification.
3565         * include/pstl/numeric_impl.h: Add namespace qualification.
3566         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
3567         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
3568         * include/pstl/parallel_backend_utils.h: Include <cassert>.
3569
3570 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
3571
3572         Fix visit<R> for variant.
3573         * include/std/variant (__do_visit): Add a template parameter
3574         for enforcing same return types for visit.
3575         (__gen_vtable_impl): Likewise.
3576         (_S_apply_single_alt): Adjust.
3577         (__visit_invoke_impl): New. Handle casting to void.
3578         (__do_visit_invoke): New. Enforces same return types.
3579         (__do_visit_invoke_r): New. Converts return types.
3580         (__visit_invoke): Adjust.
3581         (__gen_vtable):  Add a template parameter for enforcing
3582         same return types for visit.
3583         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
3584         different return types.
3585         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
3586         visitors with different return types don't accidentally
3587         compile with regular visitation.
3588
3589 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
3590
3591         * testsuite/27_io/filesystem/iterators/caching.cc: Add
3592         dg-require-filesystem-ts.
3593
3594 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
3595
3596         * doc/xml/manual/status_cxx2020.xml: Update status.
3597         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
3598         * testsuite/20_util/variant/visit_r.cc: New test.
3599
3600         * include/bits/fs_dir.h (directory_iterator::operator*)
3601         (directory_iterator::operator->): Add noexcept.
3602         (operator==, operator!=): Replace namespace-scope equality operators
3603         for directory iterators with hidden friends.
3604
3605         PR libstdc++/89986
3606         * config/abi/pre/gnu.ver: Add missing exports.
3607         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
3608         increment member.
3609
3610         * config/abi/pre/gnu.ver: Export new symbols.
3611         * include/bits/fs_dir.h (recursive_directory_iterator::options())
3612         (recursive_directory_iterator::recursion_pending())
3613         (recursive_directory_iterator::disable_recursion_pending()): Remove
3614         inline definitions. Make noexcept.
3615         (recursive_directory_iterator::depth())
3616         (recursive_directory_iterator::operator*())
3617         (recursive_directory_iterator::operator->()): Make noexcept.
3618         (recursive_directory_iterator::_M_options)
3619         (recursive_directory_iterator::_M_pending): Remove data members.
3620         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
3621         (recursive_directory_iterator::recursive_directory_iterator): Remove
3622         ctor-initializer. Use new constructor for _Dir_stack.
3623         (recursive_directory_iterator::options())
3624         (recursive_directory_iterator::recursion_pending())
3625         (recursive_directory_iterator::disable_recursion_pending()): Add
3626         non-inline definitions.
3627         (recursive_directory_iterator::depth()): Make noexcept.
3628         (recursive_directory_iterator::increment(error_code&))
3629         (recursive_directory_iterator::pop(error_code&)): Adjust to new
3630         location of options and recursion_pending members.
3631         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
3632         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
3633         user-declared move constructor and assignment operator, to make the
3634         type move-only.
3635
3636         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
3637         d_type == DT_UNKNOWN immediately.
3638         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
3639         handling here.
3640         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
3641
3642         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
3643         assignment.
3644         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
3645         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
3646         assignment.
3647
3648         PR libstdc++/87431 (again)
3649         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
3650         Define partial specialization for basic_string.
3651         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
3652         shared_ptr and weak_ptr.
3653         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
3654         function.
3655         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
3656         vector.
3657         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
3658         unique_ptr.
3659         * include/debug/vector (_Never_valueless_alt): Likewise for debug
3660         vector.
3661         * include/std/any (_Never_valueless_alt): Define explicit
3662         specialization for any.
3663         * include/std/variant (_Never_valueless_alt): Define primary template.
3664         (__never_valueless): Use _Never_valueless_alt instead of
3665         is_trivially_copyable.
3666         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
3667         initializations to avoid try-catch overhead. Add special case for
3668         scalars produced by potentially-throwing conversions. Use
3669         _Never_valueless_alt instead of is_trivially_copyable for the
3670         remaining strong exception-safety cases.
3671         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
3672         * testsuite/20_util/variant/87431.cc: Run both test functions.
3673         * testsuite/20_util/variant/exception_safety.cc: New test.
3674         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
3675         so the variant becomes valueless.
3676
3677 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
3678
3679         PR libstdc++/85184
3680         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
3681         Remove assertions.
3682         (variant::emplace<_Tp>): Return result of emplace<N> directly.
3683
3684         * include/std/string (__hash_string_base): New class template defining
3685         operator() for hashing strings.
3686         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
3687         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
3688         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
3689         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
3690
3691 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
3692
3693         Use single-visitation in variant assignment and swap and relops.
3694         Also use indices instead of types when checking whether
3695         variants hold the same thing.
3696         * include/std/variant (__do_visit): Add a template parameter
3697         for index visitation, invoke with indices if index visitation
3698         is used.
3699         (__variant_idx_cookie): New.
3700         (__visit_with_index): Likewise.
3701         (_Copy_assign_base::operator=): Do single-visitation with
3702         an index visitor.
3703         (_Move_assign_base::operator=): Likewise.
3704         (_Extra_visit_slot_needed): Adjust.
3705         (__visit_invoke): Call with indices if it's an index visitor.
3706         (relops): Do single-visitation with an index visitor.
3707         (swap): Likewise.
3708         (__visitor_result_type): New.
3709
3710 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
3711
3712         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
3713
3714 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
3715
3716         Don't revisit a variant we are already visiting.
3717         * include/std/variant (__variant_construct_single): New.
3718         (__variant_construct): Use it.
3719         (_M_destructive_move): Likewise.
3720         (_M_destructive_copy): Likewise.
3721         (_Copy_assign_base::operator=): Adjust.
3722         (_Move_assign_base::operator=): Likewise.
3723         (swap): Likewise.
3724
3725 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
3726
3727         PR libstdc++/85965
3728         * include/bits/hashtable.h (_Hashtable): Move static assertions to
3729         destructor so they are not evaluated until the _Key type is complete.
3730         * include/bits/stl_tree.h (_Rb_tree): Likewise.
3731         * testsuite/23_containers/set/85965.cc: New test.
3732         * testsuite/23_containers/unordered_set/85965.cc: New test.
3733         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
3734         with regexp matching the corresponding _Rb_tree specialization.
3735         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
3736         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
3737         * testsuite/23_containers/set/48101_neg.cc: Likewise.
3738         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
3739         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
3740         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
3741         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
3742
3743 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
3744
3745         PR libstdc++/89825
3746         Fix based on a suggestion by Antony Polukhin.
3747         * include/std/variant (__never_valueless): New.
3748         (_M_valid): Use it.
3749         (_Extra_visit_slot_needed): New.
3750         (_Multi_array): Use it.
3751         (_S_apply_all_alts): Likewise.
3752
3753 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
3754
3755         PR libstdc++/89824
3756         Fix based on a suggestion by Antony Polukhin.
3757         * include/std/variant (__gen_vtable): Don't reserve an
3758         additional table slot, _Multi_array already does that.
3759
3760 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
3761
3762         PR libstdc++/89816
3763         Fix based on a suggestion by Antony Polukhin.
3764         * include/std/variant (__variant_construct): Capture a pointer
3765         to the storage and visit just one variant.
3766
3767 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
3768
3769         * doc/xml/manual/backwards_compatibility.xml: Remove link to
3770         Doxygen-generated pages with unstable URL.
3771         * doc/xml/manual/concurrency_extensions.xml: Likewise.
3772         * doc/xml/manual/extensions.xml: Likewise.
3773         * doc/xml/manual/parallel_mode.xml: Likewise.
3774         * doc/xml/manual/support.xml: Likewise.
3775
3776         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
3777         avoid -Wconversion warnings.
3778
3779 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
3780
3781         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
3782         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
3783         (allstamped): Add stamp-pstl.
3784         (install-headers): Add ptsl_builddir.
3785         * include/Makefile.in: Regenerate.
3786         * include/bits/c++config: Add pstl configuration.
3787         * include/pstl/LICENSE.txt: New file.
3788         * include/pstl/algorithm_fwd.h: New file.
3789         * include/pstl/algorithm_impl.h: New file.
3790         * include/pstl/execution_defs.h: New file.
3791         * include/pstl/execution_impl.h: New file.
3792         * include/pstl/glue_algorithm_defs.h: New file.
3793         * include/pstl/glue_algorithm_impl.h: New file.
3794         * include/pstl/glue_execution_defs.h: New file.
3795         * include/pstl/glue_memory_defs.h: New file.
3796         * include/pstl/glue_memory_impl.h: New file.
3797         * include/pstl/glue_numeric_defs.h: New file.
3798         * include/pstl/glue_numeric_impl.h: New file.
3799         * include/pstl/memory_impl.h: New file.
3800         * include/pstl/numeric_fwd.h: New file.
3801         * include/pstl/numeric_impl.h: New file.
3802         * include/pstl/parallel_backend.h: New file.
3803         * include/pstl/parallel_backend_tbb.h: New file.
3804         * include/pstl/parallel_backend_utils.h: New file.
3805         * include/pstl/parallel_impl.h: New file.
3806         * include/pstl/pstl_config.h: New file.
3807         * include/pstl/unseq_backend_simd.h: New file.
3808         * include/pstl/utils.h: New file.
3809         * include/std/algorithm: Include parallel algorithm implementations.
3810         * include/std/execution: New file.
3811         * include/std/memory: Include parallel algorithm implementations.
3812         * include/std/numeric: Include parallel algorithm implementations.
3813         * include/std/version: Add parallel algorithms feature test macro.
3814         * testsuite/util/pstl/pstl_test_config.h: New file.
3815         * testsuite/util/pstl/test_utils.h: New file.
3816         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
3817         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
3818         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
3819         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
3820         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
3821         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
3822         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
3823         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
3824         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
3825         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
3826         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
3827         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
3828         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
3829         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
3830         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
3831         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
3832         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
3833         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
3834         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
3835         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
3836         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
3837         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
3838         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
3839         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
3840         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
3841         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
3842         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
3843         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
3844         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
3845         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
3846         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
3847         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
3848         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
3849         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
3850         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
3851         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
3852         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
3853         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
3854         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
3855         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
3856         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
3857         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
3858         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
3859         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
3860         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
3861         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
3862         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
3863         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
3864         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
3865         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
3866         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
3867         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
3868         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
3869         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
3870         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
3871         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
3872         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
3873         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
3874         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
3875         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
3876         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
3877         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
3878         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
3879         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
3880         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
3881         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
3882         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
3883         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
3884         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
3885         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
3886         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
3887         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
3888         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
3889         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
3890         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
3891         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
3892         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
3893         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
3894         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
3895         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
3896         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
3897         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
3898         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
3899         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
3900         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
3901         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
3902         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
3903         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
3904         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
3905         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
3906         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
3907         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
3908         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
3909         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
3910         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
3911         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
3912         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
3913         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
3914         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
3915         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
3916         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
3917         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
3918         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
3919         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
3920         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
3921         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
3922
3923 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
3924
3925         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
3926         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
3927         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
3928         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
3929         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
3930         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
3931         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
3932         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
3933         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
3934         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
3935         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
3936         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
3937         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
3938         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
3939         when the special functions IS is enabled, not for C++17.
3940         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
3941         Replace with ...
3942         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
3943         without checks for special functions in C++17.
3944         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
3945         New test.
3946
3947         PR libstdc++/88066
3948         * include/backward/hash_map: Use <> for includes not "".
3949         * include/backward/hash_set: Likewise.
3950         * include/backward/strstream: Likewise.
3951         * include/tr1/bessel_function.tcc: Likewise.
3952         * include/tr1/exp_integral.tcc: Likewise.
3953         * include/tr1/legendre_function.tcc: Likewise.
3954         * include/tr1/modified_bessel_func.tcc: Likewise.
3955         * include/tr1/riemann_zeta.tcc: Likewise.
3956
3957 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
3958
3959         * doc/xml/manual/allocator.xml: Link to table documenting evolution
3960         of extension allocators.
3961         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
3962         Document new headers in 7.2, 8.1 and 9.1 releases.
3963         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
3964         * doc/html/*: Regenerate.
3965
3966 2019-03-12  John David Anglin  <dave.anglin@bell.net>
3967
3968         PR libstdc++/89461
3969         * testsuite/lib/libstdc++.exp: Locate libatomic.
3970         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
3971         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
3972         libatomic options.
3973         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
3974         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
3975         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
3976         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
3977
3978 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
3979
3980         PR libstdc++/89460
3981         * configure.ac: Check for sockatmark.
3982         * crossconfig.m4: Check for sockatmark.
3983         * config.h.in: Regenerate.
3984         * configure: Regenerate.
3985         * include/experimental/internet (address_v4::_S_hton): Rename
3986         overloaded functions to _S_hton_16 and _S_ntoh_16.
3987         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
3988         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
3989         * include/experimental/socket (basic_socket::at_mark): Check
3990         _GLIBCXX_HAVE_SOCKATMARK.
3991
3992         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
3993         const variables instead of macros.
3994
3995         PR libstdc++/89629
3996         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
3997         Use correct type for len_aligned.
3998         * testsuite/20_util/hash/89629.cc: New test.
3999
4000 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4001
4002         PR libstdc++/89641
4003         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4004         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4005         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4006         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4007         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4008         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4009         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4010         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4011         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4012         memory_order_seq_cst to int.
4013
4014 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4015
4016         * doc/xml/manual/using.xml: Use link element instead of xref.
4017         * doc/html/*: Regenerate.
4018
4019         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4020
4021 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4022
4023         PR libstdc++/89477
4024         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4025         parameters in deduction guides.
4026         * include/debug/multimap.h (multimap): Likewise.
4027         * include/debug/set.h (multimap): Likewise.
4028         * include/debug/multiset.h (multimap): Likewise.
4029         * include/debug/unordered_map (unordered_map): Likewise.
4030         (unordered_multimap): Likewise.
4031         * include/debug/unordered_set (unordered_set): Likewise.
4032         (unordered_multiset): Likewise.
4033
4034         PR libstdc++/89608
4035         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4036         Invalidate all iterators in case of rehash.
4037         (unordered_multimap<>::_M_check_rehashed): Likewise.
4038         * include/debug/unordered_set
4039         (unordered_set<>::_M_check_rehashed): Likewise.
4040         (unordered_multiset<>::_M_check_rehashed): Likewise.
4041         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4042
4043 2019-03-07  Andreas Schwab  <schwab@suse.de>
4044
4045         * config/abi/post/riscv64-linux-gnu: New directory.
4046         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4047
4048 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4049
4050         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4051         compile test to run. Fix typo.
4052
4053         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4054         * doc/html/*: Regenerate.
4055
4056         P0356R5 Simplified partial function application
4057         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4058         helpers for bind_front.
4059         (bind_front, __cpp_lib_bind_front): Define.
4060         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4061
4062 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4063
4064         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4065         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4066         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4067         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4068
4069 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4070
4071         PR libstdc++/86655 - std::assoc_legendre should not constrain
4072         the value of m (or x).
4073         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4074         __sph_legendre): If degree > order Don't throw, return 0.
4075         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4076         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4077         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4078         * testsuite/tr1/5_numerical_facilities/special_functions/
4079         02_assoc_legendre/pr86655.cc: New test.
4080         * testsuite/tr1/5_numerical_facilities/special_functions/
4081         22_sph_legendre/pr86655.cc: New test.
4082
4083 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4084
4085         Rewrite variant.
4086         Also PR libstdc++/85517
4087         * include/std/variant (__do_visit): New.
4088         (__variant_cast): Likewise.
4089         (__variant_cookie): Likewise.
4090         (__erased_*): Remove.
4091         (_Variant_storage::_S_vtable): Likewise.
4092         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4093         (_Variant_storage::__M_reset): Adjust.
4094         (__variant_construct): New.
4095         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4096         __variant_construct.
4097         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4098         (_Move_ctor_base::__M_destructive_copy): New.
4099         (_Move_ctor_base::__M_destructive_move): Adjust to use
4100         __variant_construct.
4101         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4102         (_Copy_assign_alias): Adjust to check both copy assignment
4103         and copy construction for triviality.
4104         (_Move_assign_base::operator=): Adjust to use __do_visit.
4105         (_Multi_array): Add support for visitors that accept and return
4106         a __variant_cookie.
4107         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4108         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4109         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4110         a __variant_cookie temporary for a variant that is valueless and..
4111         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4112         (__gen_vtable::_Array_type): Conditionally make space for
4113         the __variant_cookie visitor case.
4114         (__variant_construct_by_index): New.
4115         (get_if): Adjust to use std::addressof.
4116         (relops): Adjust to use __do_visit.
4117         (variant): Add __variant_cast and __variant_construct_by_index
4118         as friends.
4119         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4120         instead of self-destruction.
4121         (variant::swap): Adjust to use __do_visit.
4122         (visit): Reimplement in terms of __do_visit.
4123         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4124         * testsuite/20_util/variant/compile.cc: Adjust.
4125         * testsuite/20_util/variant/run.cc: Likewise.
4126
4127 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4128
4129         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4130         constant.
4131         * testsuite/experimental/feat-char8_t.cc: Likewise.
4132
4133          * include/std/type_traits [C++20] (is_bounded_array)
4134          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4135          Define.
4136          * testsuite/20_util/is_bounded_array/requirements/
4137          explicit_instantiation.cc: New test.
4138          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4139          test.
4140          * testsuite/20_util/is_bounded_array/value.cc: New test.
4141          * testsuite/20_util/is_unbounded_array/requirements/
4142          explicit_instantiation.cc: New test.
4143          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4144          * test.
4145          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4146
4147         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4148         Add constexpr.
4149         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4150
4151 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4152
4153         * include/c_compatibility/math.h [C++20] (lerp): Add using
4154         declaration.
4155         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4156         (__lerp): Define function template to implement lerp.
4157         (lerp(float, float, float), lerp(double, double, double))
4158         (lerp(long double, long double, long double)): Define for C++20.
4159         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4160         (midpoint(T, T), midpoint(T*, T*)): Define.
4161         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4162         * testsuite/26_numerics/lerp.cc: New test.
4163         * testsuite/26_numerics/midpoint/floating.cc: New test.
4164         * testsuite/26_numerics/midpoint/integral.cc: New test.
4165         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4166
4167 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4168
4169         PR libstdc++/88996 Implement P0439R0
4170         Make std::memory_order a scoped enumeration.
4171         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4172         add variables for the old enumerators.  Adjust calls.
4173         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4174         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4175
4176 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4177
4178         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4179         directive.
4180
4181         * include/std/memory_resource (polymorphic_allocator): Add default
4182         template argument for C++20.
4183         (polymorphic_allocator::allocate_bytes)
4184         (polymorphic_allocator::deallocate_bytes)
4185         (polymorphic_allocator::allocate_object)
4186         (polymorphic_allocator::deallocate_object)
4187         (polymorphic_allocator::new_object)
4188         (polymorphic_allocator::delete_object): New member functions for
4189         C++20.
4190         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4191         test.
4192
4193 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4194
4195         PR libstdc++/89562
4196         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4197         mode for mingw.
4198
4199 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4200
4201         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4202         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4203
4204         * include/std/memory (uses_allocator_construction_args): New set of
4205         overloaded functions.
4206         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4207         New functions.
4208         * include/std/memory_resource (polymorphic_allocator::construct)
4209         [__cplusplus > 201703l]: Replace all overloads with a single function
4210         using uses_allocator_construction_args.
4211         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4212         test.
4213         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4214
4215 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4216
4217         PR libstdc++/89466
4218         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4219         stylesheet directories before check for xsltproc. Try to use
4220         xmlcatalog to find local stylesheet directory before trying hardcoded
4221         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4222         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4223         use xsltproc if xmlcatalog fails to find a local stylesheet.
4224         * configure.ac: Check for xmlcatalog.
4225         * Makefile.in: Regenerate.
4226         * configure: Likewise.
4227         * doc/Makefile.in: Likewise.
4228         * include/Makefile.in: Likewise.
4229         * libsupc++/Makefile.in: Likewise.
4230         * po/Makefile.in: Likewise.
4231         * python/Makefile.in: Likewise.
4232         * src/Makefile.in: Likewise.
4233         * src/c++11/Makefile.in: Likewise.
4234         * src/c++17/Makefile.in: Likewise.
4235         * src/c++98/Makefile.in: Likewise.
4236         * src/filesystem/Makefile.in: Likewise.
4237         * testsuite/Makefile.in: Likewise.
4238
4239 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4240
4241         PR libstdc++/89477
4242         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4243         container deduction guides.
4244         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4245         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4246         parameters in deduction guides.
4247         * include/bits/stl_multimap.h (multimap): Likewise.
4248         * include/bits/stl_multiset.h (multiset): Likewise.
4249         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4250         * include/bits/stl_set.h (set): Likewise.
4251         * include/bits/stl_stack.h (stack): Likewise.
4252         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4253         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4254         constrain parameters in deduction guides.
4255         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4256         Likewise.
4257         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4258         deduction cases.
4259         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4260         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4261         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4262         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4263         Likewise.
4264         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4265         Likewise.
4266         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4267
4268         PR libstdc++/89416
4269         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
4270         to class template and partial specialization using void_t.
4271         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4272
4273 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
4274
4275         PR libstdc++/89416
4276         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
4277         copy and move members public.
4278
4279 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
4280
4281         * include/std/type_traits (__underlying_type_impl): New helper to
4282         make underlying_type SFINAE-friendly.
4283         (underlying_type): Derive from __underlying_type_impl.
4284         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
4285         test.
4286
4287         PR libstdc++/89446
4288         * include/bits/char_traits.h (__constant_char_array): Check index is
4289         in range before dereferencing.
4290         (char_traits<char>::compare, char_traits<char>::find)
4291         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
4292         immediately if n is zero.
4293         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
4294         Remove workarounds for PR 67026.
4295         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4296         New test.
4297         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4298         New test.
4299
4300 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4301
4302         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
4303         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
4304
4305 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
4306
4307         PR libstdc++/89402
4308         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
4309         type to std::size_t and argument to type to long double.
4310
4311 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4312
4313         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
4314         * config/abi/post/sparc64-linux-gnu: New directory.
4315         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
4316         * config/abi/post/sparc64-linux-gnu/32: New directory.
4317         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
4318
4319 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4320
4321         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
4322         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
4323         test.
4324
4325 2019-02-22  Tom Honermann  <tom@honermann.net>
4326
4327         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
4328         printers for u8string and u8string_view.
4329
4330 2019-02-22  Tom Honermann  <tom@honermann.net>
4331
4332         * testsuite/18_support/byte/ops.cc: Validate
4333         std::to_integer<char8_t>, std::to_integer<char16_t>, and
4334         std::to_integer<char32_t>.
4335         * testsuite/18_support/numeric_limits/dr559.cc: Validate
4336         std::numeric_limits<char8_t>.
4337         * testsuite/18_support/numeric_limits/lowest.cc: Validate
4338         std::numeric_limits<char8_t>::lowest().
4339         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
4340         std::numeric_limits<char8_t>::max_digits10.
4341         * testsuite/18_support/type_info/fundamental.cc: Validate
4342         typeinfo for char8_t.
4343         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
4344         std::from_chars with char8_t.
4345         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
4346         Validate explicit instantiation of std::hash<char8_t>.
4347         * testsuite/20_util/is_integral/value.cc: Validate
4348         std::is_integral<char8_t>.
4349         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
4350         Validate std::make_signed<char8_t>.
4351         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4352         Validate u8string construction from char8_t sources.
4353         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
4354         std::pmr::u8string.
4355         * testsuite/21_strings/basic_string_view/operations/compare/
4356         char/70483.cc: Validate substr operations on u8string_view.
4357         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
4358         the u8string_view typedef is defined.
4359         * testsuite/21_strings/char_traits/requirements/
4360         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
4361         member functions.
4362         * testsuite/21_strings/char_traits/requirements/
4363         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
4364         constexpr member functions.
4365         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
4366         that the u8string typedef is defined.
4367         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
4368         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
4369         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
4370         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
4371         numbers.
4372         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
4373         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
4374         Likewise.
4375         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
4376         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
4377         Validate std::atomic<char8_t>::is_always_lock_free
4378         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
4379         Update line numbers.
4380         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
4381         Likewise.
4382         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
4383         Likewise.
4384         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
4385         Validate std::experimental::pmr::u8string.
4386         * testsuite/experimental/string_view/typedefs.cc: Validate that the
4387         u8string_view typedef is defined.
4388         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
4389         char32_t to the typelists.
4390
4391 2019-02-22  Tom Honermann  <tom@honermann.net>
4392
4393         * include/ext/typelist.h: Constrain a partial specialization of
4394         typelist::detail::append_ to only match chain<T1,T2>.
4395
4396 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4397
4398         PR libstdc++/89416
4399         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
4400         class template with class. Replace move and copy member types with
4401         member alias templates, so they are only instantiated when needed.
4402         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4403         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
4404         test for C++11/14/17 as well.
4405         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
4406         test.
4407
4408 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
4409
4410         PR libstdc++/89402
4411         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
4412         _GLIBCXX_PURE to the alias declaration.
4413
4414 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
4415
4416         * testsuite/21_strings/basic_string/literals/types.cc
4417         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
4418         * testsuite/21_strings/basic_string/literals/values.cc
4419         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4420         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
4421         potentially having different type.
4422         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
4423         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
4424         to char.
4425         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
4426         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
4427         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
4428         string literals only using basic character set.
4429         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
4430         u8 literals to char.
4431         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
4432         Test ATOMIC_CHAR8_T_LOCK_FREE.
4433         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
4434         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
4435         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
4436         * testsuite/experimental/string_view/literals/types.cc
4437         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
4438         literal.
4439         * testsuite/experimental/string_view/literals/values.cc
4440         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4441
4442 2019-02-19  Tom Honermann  <tom@honermann.net>
4443
4444         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
4445         from char16_32_t.cc; validates numeric_limits<char8_t>.
4446         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
4447         test cloned from types.cc; validates operator""s for char8_t
4448         returns u8string.
4449         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
4450         test cloned from values.cc; validates construction and comparison
4451         of u8string values.
4452         * testsuite/21_strings/basic_string/requirements/
4453         /explicit_instantiation/char8_t/1.cc: New test cloned from
4454         char16_t/1.cc; validates explicit instantiation of
4455         basic_string<char8_t>.
4456         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4457         New test cloned from types.cc; validates operator""sv for char8_t
4458         returns u8string_view.
4459         * testsuite/21_strings/basic_string_view/literals/
4460         values-char8_t.cc: New test cloned from values.cc; validates
4461         construction and comparison of u8string_view values.
4462         * testsuite/21_strings/basic_string_view/requirements/
4463         explicit_instantiation/char8_t/1.cc: New test cloned from
4464         char16_t/1.cc; validates explicit instantiation of
4465         basic_string_view<char8_t>.
4466         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
4467         New test cloned from char16_t/65049.cc; validates that
4468         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
4469         * testsuite/21_strings/char_traits/requirements/char8_t/
4470         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
4471         that char_traits<char8_t> member typedefs are present and correct.
4472         * testsuite/21_strings/char_traits/requirements/
4473         explicit_instantiation/char8_t/1.cc: New test cloned from
4474         char16_t/1.cc; validates explicit instantiation of
4475         char_traits<char8_t>.
4476         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
4477         from char16_t.cc: validates
4478         codecvt<char16_t, char8_t, mbstate_t>.
4479         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
4480         from char32_t.cc: validates
4481         codecvt<char32_t, char8_t, mbstate_t>.
4482         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
4483         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
4484         codecvt<char32_t, char8_t, std::mbstate_t>.
4485         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
4486         test cloned from string.cc; validates filesystem::path construction
4487         from char8_t input.
4488         * testsuite/experimental/feat-char8_t.cc: New test; validates that
4489         the __cpp_lib_char8_t feature test macro is defined with the
4490         correct value.
4491         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
4492         New test cloned from string.cc; validates filesystem::path
4493         construction from char8_t input.
4494         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
4495         test cloned from types.cc; validates operator""sv for char8_t
4496         returns u8string_view.
4497         * testsuite/experimental/string_view/literals/values-char8_t.cc:
4498         New test cloned from values.cc; validates construction and
4499         comparison of u8string_view values.
4500         * testsuite/experimental/string_view/requirements/
4501         explicit_instantiation/char8_t/1.cc: New test cloned from
4502         char16_t/1.cc; validates explicit instantiation of
4503         basic_string_view<char8_t>.
4504         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
4505         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
4506         enabled.
4507
4508 2019-02-19  Tom Honermann  <tom@honermann.net>
4509
4510         P0482R5 char8_t: Standard library support
4511         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
4512         typeinfo symbols for char8_t.
4513         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
4514         (GLIBCXX_3.4.26): Add symbols for specializations of
4515         numeric_limits and codecvt that involve char8_t.
4516         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
4517         * include/bits/atomic_base.h: Add atomic_char8_t.
4518         * include/bits/basic_string.h: Add std::hash<u8string> and
4519         operator""s(const char8_t*, size_t).
4520         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
4521         __cpp_lib_char8_t.
4522         * include/bits/char_traits.h: Add char_traits<char8_t>.
4523         * include/bits/codecvt.h: Add
4524         codecvt<char16_t, char8_t, mbstate_t>,
4525         codecvt<char32_t, char8_t, mbstate_t>,
4526         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4527         codecvt_byname<char32_t, char8_t, mbstate_t>.
4528         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
4529         recognize char8_t as an integral type.
4530         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
4531         char8_t.
4532         (path::u8string): Return std::u8string when char8_t support is
4533         enabled.
4534         (path::generic_u8string): Likewise.
4535         (path::_S_convert): Handle conversion from char8_t input.
4536         (path::_S_str_convert): Likewise.
4537         * include/bits/functional_hash.h: Add hash<char8_t>.
4538         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
4539         char8_t.
4540         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
4541         for new char8_t specializations.
4542         * include/bits/localefwd.h: Add missing declarations of
4543         codecvt<char16_t, char, mbstate_t> and
4544         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
4545         codecvt<char16_t, char8_t, mbstate_t> and
4546         codecvt<char32_t, char8_t, mbstate_t>.
4547         * include/bits/postypes.h: Add u8streampos
4548         * include/bits/stringfwd.h: Add declarations of
4549         char_traits<char8_t> and u8string.
4550         * include/c_global/cstddef: Add __byte_operand<char8_t>.
4551         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
4552         Recognize char8_t.
4553         (path::u8string): Return std::u8string when char8_t support is
4554         enabled.
4555         (path::generic_u8string): Likewise.
4556         (path::_S_convert): Handle conversion from char8_t input.
4557         (path::_S_str_convert): Likewise.
4558         * include/experimental/string: Add u8string.
4559         * include/experimental/string_view: Add u8string_view,
4560         hash<experimental::u8string_view>, and
4561         operator""sv(const char8_t*, size_t).
4562         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
4563         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
4564         as a character type.
4565         * include/std/limits: Add numeric_limits<char8_t>.
4566         * include/std/string_view: Add u8string_view,
4567         hash<experimental::u8string_view>, and
4568         operator""sv(const char8_t*, size_t).
4569         * include/std/type_traits: Add __is_integral_helper<char8_t>,
4570         __make_unsigned<char8_t>, and __make_signed<char8_t>.
4571         * libsupc++/atomic_lockfree_defines.h: Define
4572         ATOMIC_CHAR8_T_LOCK_FREE.
4573         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
4574         codecvt.cc and limits.cc so that char8_t specializations of
4575         numeric_limits and codecvt and emitted.
4576         * src/c++11/Makefile.in: Likewise.
4577         * src/c++11/codecvt.cc: Define members of
4578         codecvt<char16_t, char8_t, mbstate_t>,
4579         codecvt<char32_t, char8_t, mbstate_t>,
4580         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4581         codecvt_byname<char32_t, char8_t, mbstate_t>.
4582         * src/c++11/limits.cc: Define members of
4583         numeric_limits<char8_t>.
4584         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
4585         locale_init.cc and localename.cc.
4586         * src/c++98/Makefile.in: Likewise.
4587         * src/c++98/locale_init.cc: Add initialization for the
4588         codecvt<char16_t, char8_t, mbstate_t> and
4589         codecvt<char32_t, char8_t, mbstate_t> facets.
4590         * src/c++98/localename.cc: Likewise.
4591         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
4592
4593 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
4594
4595         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
4596         * 27_io/filesystem/operations/resize_file.cc: Likewise.
4597         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
4598
4599 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
4600
4601         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
4602         * doc/html/*: Regenerate.
4603
4604         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
4605         * doc/html/*: Regenerate.
4606
4607         * doc/xml/manual/intro.xml: Document LWG 2586 status.
4608         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
4609         allocator type in is_constructible checks.
4610         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
4611         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
4612         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
4613         problematic type from LWG 2586 discussion.
4614         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
4615         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
4616
4617         * configure.ac: Check for C11 timespec_get function.
4618         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
4619         (openbsd): Likewise
4620         * config.h.in: Regenerate.
4621         * configure: Regenerate.
4622         * include/c_global/ctime (timespec, timespec_get): Add to namespace
4623         std for C++17 and up.
4624
4625         * doc/xml/manual/intro.xml: Document LWG 2537 status.
4626         * include/bits/stl_queue.h
4627         (priority_queue(const Compare&, const Container&, const Alloc&))
4628         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
4629         make_heap.
4630         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
4631
4632         * doc/xml/manual/intro.xml: Document LWG 2566 status.
4633         * include/bits/stl_queue.h (queue, priority_queue): Add static
4634         assertions to enforce LWG 2566 requirement on value_type.
4635         * include/bits/stl_stack.h (stack): Likewise.
4636
4637         PR middle-end/89303
4638         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
4639
4640         * doc/xml/manual/intro.xml: Document LWG 2735 status.
4641         * include/bits/std_abs.h: Add comment about LWG 2735.
4642         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
4643
4644 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
4645
4646         PR libstdc++/89345
4647         * include/std/version [__cpp_impl_destroying_delete]
4648         (__cpp_lib_destroying_delete): Only define for C++2a and later.
4649         * libsupc++/new [__cpp_impl_destroying_delete]
4650         (__cpp_lib_destroying_delete): Likewise.
4651         (destroying_delete_t, destroying_delete): Likewise, but define even
4652         when __cpp_impl_destroying_delete is not defined.
4653         * testsuite/18_support/destroying_delete.cc: New test.
4654
4655 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
4656
4657         PR libstdc++/89023
4658         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
4659         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
4660         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
4661         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
4662
4663 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
4664
4665         PR libstdc++/71044
4666         * include/bits/fs_path.h (path::has_root_name)
4667         (path::has_root_directory, path::has_root_path)
4668         (path::has_relative_path, path::has_parent_path)
4669         (path::has_filename, path::has_stem, path::has_extension)
4670         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
4671         noexcept.
4672         * src/c++17/fs_path.cc (path::has_root_name)
4673         (path::has_root_directory, path::has_root_path)
4674         (path::has_relative_path, path::has_parent_path)
4675         (path::has_filename, path::_M_find_extension): Add noexcept.
4676
4677 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
4678
4679         PR libstdc++/89102 (partial)
4680         * include/std/type_traits (common_type<>): Define.
4681         (common_type<T>): Derive from common_type<T, T>.
4682         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
4683         Test zero-length template argument list.
4684         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
4685         Test additional single argument cases.
4686         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
4687         Adjust expected error.
4688
4689 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
4690
4691         PR libstdc++/89128
4692         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
4693         guides.
4694         * include/bits/stl_stack.h (stack): Likewise.
4695         * testsuite/23_containers/priority_queue/deduction.cc: New test.
4696         * testsuite/23_containers/queue/deduction.cc: New test.
4697         * testsuite/23_containers/stack/deduction.cc: New test.
4698
4699         PR libstdc++/89194
4700         * include/std/type_traits (__is_convertible_helper)
4701         (__is_convertible_helper<_From, _To, false>): Revert changes to
4702         support is_nothrow_convertible.
4703         (__is_nt_convertible_helper): New helper.
4704         (is_nothrow_convertible): Use __is_nt_convertible_helper.
4705
4706         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
4707         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
4708
4709         PR libstdc++/89130
4710         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
4711         __is_alloc_insertable_impl. Replace single type member with two
4712         members, one for each of copy and move insertable.
4713         (__is_move_insertable): New trait for internal use.
4714         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
4715         (vector::_S_nothrow_relocate(true_type)): New functions to
4716         conditionally check if __relocate_a can throw.
4717         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
4718         on __is_move_insertable.
4719         (vector::_S_do_relocate): New overloaded functions to conditionally
4720         call __relocate_a.
4721         (vector::_S_relocate): New function that dispatches to _S_do_relocate
4722         based on _S_use_relocate.
4723         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4724         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
4725         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
4726
4727         PR libstdc++/89090
4728         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
4729         parameter unnamed. Add message to static assertion.
4730         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4731         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
4732         in C++11 code.
4733
4734 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
4735
4736         PR libstdc++/87106
4737         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
4738         Rename...
4739         (__is_bitwise_relocatable): ... to this.
4740         (__relocate_a_1): Adapt.
4741         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
4742         (__is_bitwise_relocatable): ... to this.
4743
4744 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
4745
4746         PR libstdc++/89117
4747         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
4748         final component as well as from _M_pathname. Append the dot using
4749         operator+= instead of only to _M_pathname.
4750         (path::_M_find_extension): Reformat slightly.
4751         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
4752         Add more test cases.
4753
4754 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
4755
4756         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
4757
4758 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
4759
4760         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
4761         constexpr specifiers from arg and proj.
4762
4763         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
4764         __shared_ptr instantiations used by gcc4-compatible ABI.
4765
4766         * include/experimental/forward_list (experimental::erase): Qualify
4767         call to erase_if.
4768         * include/experimental/list (experimental::erase): Likewise.
4769         * include/std/forward_list (std::erase): Likewise.
4770         * include/std/list (std::erase): Likewise.
4771
4772         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
4773         C++2a.
4774         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
4775         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
4776         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
4777         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
4778         * testsuite/ext/array_allocator/26875.cc: Likewise.
4779         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
4780         * testsuite/util/replacement_memory_operators.h: Likewise.
4781         * testsuite/util/testsuite_allocator.h: Likewise.
4782
4783         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
4784         normal mode vector, even for debug mode.
4785         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
4786         Define alias template for normal mode vector.
4787
4788 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
4789
4790         PR libstdc++/68737
4791         * config/locale/generic/c_locale.h (__convert_from_v)
4792         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
4793         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
4794         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
4795         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
4796
4797 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
4798
4799         PR libstdc++/88840
4800         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
4801         data member with static member function _S_use_relocate().
4802         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4803         (vector::_M_default_append): Use _S_use_relocate() instead of
4804         __use_relocate.
4805
4806         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
4807         sign of results.
4808
4809 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
4810
4811         PR libstdc++/88740
4812         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
4813         write to stderr instead of using printf.
4814
4815 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
4816
4817         PR libstdc++/86590
4818         * include/bits/char_traits.h (__constant_string_p,
4819         __constant_char_array_p): Use __builtin_is_constant_evaluated if
4820         available.
4821
4822 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
4823
4824         Implement C++20 P0600r1.
4825         * include/backward/hash_map: Add nodiscard attribute to empty.
4826         * include/backward/hash_set: Likewise.
4827         * backward/hashtable.h: Likewise.
4828         * include/bits/basic_string.h: Likewise.
4829         * include/bits/forward_list.h: Likewise.
4830         * include/bits/hashtable.h: Likewise.
4831         * include/bits/regex.h: Likewise.
4832         * include/bits/stl_deque.h: Likewise.
4833         * include/bits/stl_list.h: Likewise.
4834         * include/bits/stl_map.h: Likewise.
4835         * include/bits/stl_multimap.h: Likewise.
4836         * include/bits/stl_multiset.h: Likewise.
4837         * include/bits/stl_queue.h: Likewise.
4838         * include/bits/stl_set.h: Likewise.
4839         * include/bits/stl_stack.h: Likewise.
4840         * include/bits/stl_tree.h: Likewise.
4841         * include/bits/stl_vector.h: Likewise.
4842         * include/bits/unordered_map.h: Likewise.
4843         * include/bits/unordered_set.h: Likewise.
4844         * include/debug/array: Likewise.
4845         * include/experimental/any: Likewise.
4846         * include/experimental/bits/fs_path.h: Likewise.
4847         * include/experimental/internet: Likewise.
4848         * include/experimental/string_view: Likewise.
4849         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
4850         Likewise.
4851         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
4852         Likewise.
4853         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
4854         Likewise.
4855         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
4856         Likewise.
4857         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
4858         Likewise.
4859         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
4860         Likewise.
4861         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
4862         Likewise.
4863         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
4864         Likewise.
4865         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
4866         info_fn_imps.hpp: Likewise.
4867         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
4868         left_child_next_sibling_heap_.hpp: Likewise.
4869         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
4870         Likewise.
4871         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
4872         Likewise.
4873         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
4874         Likewise.
4875         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
4876         Likewise.
4877         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
4878         Likewise.
4879         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
4880         Likewise.
4881         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
4882         Likewise.
4883         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
4884         * include/ext/pb_ds/trie_policy.hpp: Likewise.
4885         * include/ext/rope: Likewise.
4886         * include/ext/slist: Likewise.
4887         * include/ext/vstring.h: Likewise.
4888         * include/profile/array: Likewise.
4889         * include/std/array: Likewise.
4890         * include/tr1/array: Likewise.
4891         * include/tr1/hashtable.h: Likewise.
4892         * include/tr1/regex: Likewise.
4893         * include/tr2/dynamic_bitset: Likewise.
4894         * include/bits/alloc_traits.h: Add nodiscard attribute to
4895         allocate.
4896         * include/experimental/memory_resource: Likewise.
4897         * include/ext/alloc_traits.h: Likewise.
4898         * include/ext/array_allocator.h: Likewise.
4899         * include/ext/bitmap_allocator.h: Likewise.
4900         * include/ext/debug_allocator.h: Likewise.
4901         * include/ext/extptr_allocator.h: Likewise.
4902         * include/ext/mt_allocator.h: Likewise.
4903         * include/ext/new_allocator.h: Likewise.
4904         * include/ext/pool_allocator.h: Likewise.
4905         * include/ext/throw_allocator.h: Likewise.
4906         * include/std/scoped_allocator: Likewise.
4907         * libsupc++/eh_alloc.cc: Likewise.
4908         * include/std/future: Add nodiscard attribute to async.
4909         * libsupc++/new: Add nodiscard attribute to new.
4910
4911 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
4912
4913         PR libstdc++/87514
4914         PR libstdc++/87520
4915         PR libstdc++/88782
4916         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
4917         * include/bits/shared_ptr.h
4918         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
4919         (allocate_shared): Change to use new tag type.
4920         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
4921         Declare new member function.
4922         (_Sp_alloc_shared_tag): Define new type.
4923         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
4924         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
4925         _Sp_make_shared_tag::_S_eq to check type_info.
4926         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
4927         Constrain to prevent being called with _Sp_alloc_shared_tag.
4928         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
4929         Replace constructor with ...
4930         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
4931         reference parameter so address of the new object can be returned to
4932         the caller. Obtain the allocator from the tag type.
4933         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
4934         constructor with ...
4935         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
4936         to the __shared_count constructor.
4937         (__allocate_shared): Change to use new tag type.
4938         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
4939
4940 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
4941
4942         * src/c++17/fs_ops.cc
4943         (equivalent(const path&, const path&, error_code&))
4944         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
4945         compare files instead of relying on incomplete info returned by stat.
4946
4947         PR libstdc++/88884
4948         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
4949         if the path is already absolute.
4950         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
4951         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
4952
4953         PR libstdc++/88881
4954         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
4955         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
4956         of filesystem::exists.
4957         (create_directories(const path&, error_code&)): Add assertions.
4958         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
4959         Add workaround for bug in _wstat for paths with trailing slash.
4960         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
4961         for expected behaviour on mingw.
4962         * testsuite/experimental/filesystem/operations/create_directories.cc:
4963         Likewise.
4964         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
4965         "TMP" instead of "TMPDIR" and clean environment before each test. Do
4966         not test permissions on mingw targets.
4967
4968 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
4969
4970         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
4971         constructors and open members taking wide strings. Fix patterns for
4972         filesystem::path members to match wstring_view parameters. Add
4973         exports for shared_ptr members used by directory iterators.
4974         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
4975         error code parameter if the file doesn't exist.
4976         * src/filesystem/ops.cc (remove(const path&, error_code&)):
4977         Likewise.
4978         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
4979         values for mingw targets, where "/" is not an absolute path. Do not
4980         test symlinks on mingw targets.
4981         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
4982         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
4983         on mingw targets.
4984         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
4985         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
4986         that each component of the path is created.
4987         * testsuite/experimental/filesystem/operations/create_directories.cc:
4988         Likewise.
4989         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
4990         permissions on mingw targets.
4991         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
4992         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
4993         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
4994         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
4995         mingw targets.
4996         * testsuite/experimental/filesystem/operations/permissions.cc:
4997         Likewise.
4998         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
4999         symlinks or permissions on mingw targets.
5000         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5001         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5002         symlinks on mingw targets.
5003         * testsuite/experimental/filesystem/operations/remove_all.cc:
5004         Likewise.
5005         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5006         permissions on mingw targets.
5007         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5008         test symlinks on mingw targets.
5009         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5010         for mingw targets.
5011
5012 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5013
5014         PR libstdc++/88738
5015         Warn about unused comparisons of shared_ptr/unique_ptr
5016         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5017         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5018         <, <=, >, >= for shared_ptr.
5019         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5020
5021 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5022
5023         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5024         as 201611L, because P0497R0 changes are supported.
5025         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5026
5027         * include/bits/erase_if.h [__cplusplus > 201703L]
5028         (__cpp_lib_erase_if): Only define for C++2a.
5029         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5030         (__cpp_lib_null_iterators): Define.
5031         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5032         (__cpp_lib_null_iterators): Define.
5033         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5034
5035         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5036         status.
5037         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5038         Define.
5039         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5040         changes are supported.
5041         * include/std/optional (__cpp_lib_optional): Likewise.
5042         * include/std/variant (__cpp_lib_variant): Likewise.
5043         * include/std/version [!__STRICT_ANSI__]
5044         (__cpp_lib_uncaught_exceptions): Define as long integer.
5045         [__cplusplus >= 201703L] (__cpp_lib_any)
5046         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5047         (__cpp_lib_variant): Define for C++17.
5048         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5049         as long integer.
5050         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5051         integer.
5052
5053         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5054
5055 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5056
5057         PR libstdc++/88811
5058         PR libstdc++/83306
5059         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5060         before second path.
5061         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5062         test.
5063
5064 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5065
5066         * doc/xml/manual/intro.xml: Include new section.
5067         * doc/xml/manual/status_cxx2017.xml: Document more
5068         implementation-defined properties of the library.
5069         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5070         * doc/html/*: Regenerate.
5071
5072         * include/bits/refwrap.h [__cplusplus > 201703L]
5073         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5074         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5075         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5076         for C++2a.
5077         (reference_wrapper::operator()): Add static assertion.
5078         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5079
5080         * include/std/chrono (duration_values::zero(), duration_values::min())
5081         (duration_values::max()): Add noexcept.
5082         (duration::zero(), duration::min(), duration::max()): Likewise.
5083         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5084         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5085         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5086
5087         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5088
5089 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5090
5091         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5092         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5093
5094 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5095
5096         PR libstdc++/88802
5097         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5098         specialization for C++17 (P0513R0, LWG 2817).
5099         * testsuite/20_util/hash/nullptr.cc: New test.
5100
5101         PR libstdc++/88125
5102         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5103         pattern for std::basic_stringbuf::str().
5104
5105         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5106         basic_ostream::operator<< patterns.
5107
5108 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5109
5110         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5111         test failures on targets with 32-bit time_t.
5112
5113         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5114         * include/std/deque: Likewise.
5115         * include/std/forward_list: Likewise.
5116         * include/std/list: Likewise.
5117         * include/std/string: Likewise.
5118         * include/std/vector: Likewise.
5119         * include/std/version: Likewise.
5120         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5121         * testsuite/23_containers/deque/erasure.cc: Likewise.
5122         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5123         * testsuite/23_containers/list/erasure.cc: Likewise.
5124         * testsuite/23_containers/map/erasure.cc: Likewise.
5125         * testsuite/23_containers/set/erasure.cc: Likewise.
5126         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5127         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5128         * testsuite/23_containers/vector/erasure.cc: Likewise.
5129
5130         * include/experimental/internet [AI_NUMERICSERV]
5131         (resolver_base::numeric_service): Define conditionally.
5132         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5133         conditionally.
5134         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5135         Likewise.
5136
5137 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5138             Jonathan Wakely  <jwakely@redhat.com>
5139
5140         Implement LWG 2221
5141         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5142         (GLIBCXX_3.4.26): Add new exports.
5143         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5144         correct list of sources.
5145         * include/Makefile.in: Regenerate.
5146         * include/std/ostream (operator<<(nullptr_t)): New member function.
5147         * src/c++17/ostream-inst.cc: New file.
5148         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5149         test.
5150
5151 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5152
5153         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5154         of the source file containing the caller.
5155         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5156         directories created by test.
5157         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5158         Likewise.
5159         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5160         Likewise.
5161         * testsuite/experimental/filesystem/iterators/
5162         recursive_directory_iterator.cc: Likewise.
5163
5164 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5165
5166         PR tree-optimization/88775
5167         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5168         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5169         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5170         instead of __builtin_constant_p if available.  Don't bother with
5171         the pointer comparison in C++11 and earlier.
5172
5173 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5174
5175         PR other/16615
5176
5177         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5178         with "cannot".
5179
5180 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5181
5182         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5183         for filesystem::path. Give variables more distinctive names.
5184
5185         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5186         member function to perform non-trivial assignment.
5187         (_Optional_payload_base::_M_move_assign): Likewise.
5188         (_Optional_payload<T, true, false, true>::operator=)
5189         (_Optional_payload<T, true, true, false>::operator=)
5190         (_Optional_payload<T, true, false, false>::operator=): Call
5191         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5192
5193         PR libstdc++/88204
5194         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5195         test std::complex<long double> if long double format is IBM128.
5196         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5197         Likewise.
5198
5199 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5200
5201         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5202         for old std::unique_ptr layout.
5203         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5204         to become valueless. Add filesystem::path tests.
5205
5206         PR libstdc++/87855
5207         * include/std/optional (_Optional_payload_base): New class template
5208         for common code hoisted from _Optional_payload specializations. Use
5209         a template for the union, to allow a partial specialization for
5210         types with non-trivial destructors. Add constructors for in-place
5211         initialization to the union.
5212         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5213         to perform non-trivial copy construction, instead of relying on
5214         non-standard copy elision in a delegating constructor.
5215         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5216         non-trivial move construction.
5217         (_Optional_payload): Derive from _Optional_payload_base and use it
5218         for everything except the non-trivial assignment operators, which are
5219         defined as needed.
5220         (_Optional_payload<false, C, M>): Derive from the specialization
5221         _Optional_payload<true, false, false> and add a destructor.
5222         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5223         Forward to corresponding members of _Optional_payload.
5224         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5225         Hoist common members from _Optional_base.
5226         (_Optional_base): Make all members and base class public.
5227         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5228         _Optional_base_impl.
5229         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5230         support for new std::optional layout.
5231         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5232
5233         PR libstdc++/88066
5234         * include/bits/locale_conv.h: Use <> for includes not "".
5235         * include/ext/random: Likewise.
5236         * include/ext/vstring.h: Likewise.
5237
5238 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5239
5240         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5241         (GLIBCXX_3.4.21): Likewise.
5242
5243 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5244
5245         PR libstdc++/88749
5246         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5247         to match the one that controls whether utimbuf and utime are declared.
5248
5249 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5250
5251         PR libstdc++/87787
5252         * include/bits/char_traits.h (char_traits::move): Do not pass null
5253         pointers to memmove.
5254         * include/bits/locale_facets.h
5255         (ctype<char>::widen(const char*, const char*, char*)): Do not
5256         pass null pointers to memcpy.
5257         (ctype<char>::narrow(const char*, const char*, char, char*)):
5258         Likewise.
5259         (ctype<char>::do_widen(const char*, const char*, char*)):
5260         Likewise.
5261         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5262         Likewise.
5263
5264         * doc/xml/manual/spine.xml: Update copyright years.
5265         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5266         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5267         for C++17 filesystem library.
5268         * doc/html/*: Regenerate.
5269
5270         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
5271         * config.h.in: Regenerate.
5272         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
5273         alphabetically and add missing entries for copy_symlink,
5274         hard_link_count, rename, and resize_file.
5275         * configure: Regenerate.
5276         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
5277         used unconditionally.
5278         * src/filesystem/ops-common.h (__gnu_posix::truncate)
5279         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
5280         supports truncating to zero length.
5281         * testsuite/27_io/filesystem/operations/all.cc: New test.
5282         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
5283
5284 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
5285
5286         PR libstdc++/86756
5287         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
5288         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
5289         * config.h.in: Regenerate.
5290         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
5291         remaining std::filesystem types and functions.
5292         * configure: Regenerate.
5293         * src/c++17/Makefile.am: Add C++17 filesystem sources.
5294         * src/c++17/Makefile.in: Regenerate.
5295         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
5296         here, and change name of included file.
5297         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
5298         here, and change name of included file.
5299         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
5300         path to dir-common.h.
5301         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
5302         path to ops-common.h. Disable -Wunused-parameter warnings.
5303         (internal_file_clock): Define unconditionally.
5304         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
5305         define.
5306         (do_copy_file, do_space): Move definitions to ops.common.h.
5307         (copy, file_size, hard_link_count, last_write_time, space): Only
5308         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
5309         report an error.
5310         (last_write_time, read_symlink): Remove unused attributes from
5311         parameters.
5312         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
5313         * src/filesystem/Makefile.in: Regenerate.
5314         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
5315         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
5316         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
5317         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
5318         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
5319         dummy types and functions instead of using #error.
5320         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
5321         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
5322         in terms of stat.
5323         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
5324         (do_copy_file, do_space): Move definitions here from std-ops.cc.
5325         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
5326         to account for new namespace.
5327         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
5328         -lstdc++fs from dg-options.
5329         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
5330         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
5331         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
5332         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
5333         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
5334         Likewise.
5335         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
5336         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5337         Likewise.
5338         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
5339         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
5340         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
5341         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
5342         * testsuite/27_io/filesystem/operations/create_directories.cc:
5343         Likewise.
5344         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
5345         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
5346         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
5347         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
5348         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
5349         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
5350         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5351         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
5352         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
5353         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
5354         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
5355         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
5356         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
5357         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
5358         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
5359         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
5360         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
5361         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
5362         Likewise.
5363         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
5364
5365
5366         PR libstdc++/86756
5367         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
5368         typeinfo and vtables less greedy.
5369         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
5370         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
5371         * src/c++17/Makefile.in: Regenerate.
5372         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
5373         here, and change name of included file.
5374         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
5375         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
5376         from sources.
5377         * src/filesystem/Makefile.in: Regenerate.
5378         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
5379         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
5380         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
5381         from dg-options and remove dg-require-filesystem-ts.
5382         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
5383         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
5384         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
5385         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
5386         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
5387         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
5388         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
5389         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
5390         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
5391         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
5392         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
5393         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
5394         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
5395         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
5396         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
5397         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
5398         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
5399         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
5400         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
5401         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
5402         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
5403         Likewise.
5404         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
5405         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
5406         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
5407         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
5408         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
5409         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
5410         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
5411         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
5412         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5413         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5414         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5415         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5416         Likewise.
5417         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5418         Likewise.
5419         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5420         Likewise.
5421         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5422         Likewise.
5423         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5424         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5425         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5426         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
5427         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5428         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
5429         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
5430         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
5431         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
5432         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5433         Likewise.
5434         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
5435         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
5436         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5437         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
5438         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
5439
5440         PR libstdc++/87431
5441         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
5442         Check is_trivially_copyable instead of is_scalar.
5443         (variant::emplace<N, Args>(Args&&...)): If construction of the new
5444         contained value can throw and its type is trivially copyable then
5445         construct into a temporary variant and move from it, to provide the
5446         strong exception safety guarantee.
5447         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
5448         Likewise.
5449         * testsuite/20_util/variant/87431.cc: New test.
5450         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
5451         conversion causes valueless state.
5452
5453         PR libstdc++/88607
5454         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
5455         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
5456         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
5457         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
5458         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
5459
5460 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
5461
5462         * include/bits/fs_fwd.h (__file_clock): Define new clock.
5463         (file_time_type): Redefine in terms of __file_clock.
5464         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
5465         overflow.
5466         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
5467         internal linkage.
5468         (internal_file_lock): New helper type for accessing __file_clock.
5469         (do_copy_file): Use internal_file_lock to convert system time to
5470         file_time_type.
5471         (last_write_time(const path&, error_code&)): Likewise.
5472         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
5473
5474 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
5475
5476         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
5477         for const member functions of std::basic_string.
5478         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
5479         in C++17.
5480         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
5481         Make non-standard constructor private.
5482         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
5483         Likewise.
5484         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
5485         explicit instantiations for C++17 as well as earlier dialects.
5486         * src/c++17/Makefile.am: Add new source files.
5487         * src/c++17/Makefile.in: Regenerate.
5488         * src/c++17/cow-string-inst.cc: New file defining explicit
5489         instantiations for basic_string member functions added in C++17.
5490         * src/c++17/string-inst.cc: Likewise.
5491
5492         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
5493         copy/move constructors for old std::basic_string.
5494         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
5495         (basic_string::reference, basic_string::const_reference): Define
5496         as plain references for C++11 and later.
5497         (basic_string::basic_string()): Put constructor body outside
5498         preprocessor conditional groups.
5499         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
5500         instead of copying it.
5501         (basic_string::basic_string(const basic_string&, const _Alloc&)):
5502         Define.
5503         (basic_string::basic_string(basic_string&&, const _Alloc&)):
5504         Define.
5505         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
5506         cases for old basic_string.
5507         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
5508         allocator-extended constructors unconditionally. Add extra members to
5509         allocator type when using old string ABI.
5510         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
5511         for old string ABI.
5512         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
5513
5514         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
5515         -fno-inline added to test flags.
5516
5517         * testsuite/21_strings/basic_string/requirements/
5518         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
5519
5520         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
5521         assertion failures with old std::string ABI.
5522
5523         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
5524         with ...
5525         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
5526         functions that will only erase elements at the end.
5527         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
5528         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
5529         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
5530         of erase(p, end()).
5531         (path::_List::pop_back()): Define.
5532         (path::_List::_M_erase_from(const_iterator)): Define.
5533         (path::operator/=(const path&)): Use pop_back to remove last component
5534         and _M_erase_from to remove multiple components.
5535         (path::_M_append(basic_string_view<value_type>)): Likewise.
5536         (path::operator+=(const path&)): Likewise.
5537         (path::_M_concat(basic_string_view<value_type>)): Likewise.
5538         (path::remove_filename()): Likewise.
5539         (path::lexically_normal()): Use _List::_Impl iterators instead of
5540         path::iterator. Use pop_back to remove components from the end. Clear
5541         trailing filename, instead of using erase(const_iterator) to remove
5542         a non-final component.
5543         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
5544         additional cases.
5545         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
5546
5547         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
5548         incorrect treatment of empty filename after trailing slash.
5549         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
5550
5551         * testsuite/21_strings/basic_string/modifiers/assign/char/
5552         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
5553         to test flags.
5554         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
5555         move_assign_optim.cc: Likewise.
5556
5557 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5558             Jakub Jelinek  <jakub@redhat.com>
5559
5560         PR libstdc++/88607
5561         * include/experimental/memory: Replace UTF-8 quote characters.
5562         * include/std/future: Replace UTF-8 "em dash" characters.
5563
5564 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5565
5566         PR libstdc++/88607
5567         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
5568         * include/debug/forward_list: Likewise.
5569         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
5570         character.
5571         * include/experimental/chrono: Likewise.
5572         * include/experimental/functional: Likewise.
5573         * include/experimental/ratio: Likewise.
5574         * include/experimental/system_error: Likewise.
5575         * include/experimental/tuple: Likewise.
5576         * include/experimental/type_traits: Likewise.
5577         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
5578         * include/parallel/multiseq_selection.h: Likewise.
5579
5580         PR libstdc++/88681
5581         * config/abi/pre/gnu.ver: Add missing exports.
5582         * testsuite/22_locale/collate_byname/88681.cc: New test.
5583         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
5584         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
5585
5586 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
5587
5588         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
5589         initializer_list<value_type> and from input iterator ranges.
5590         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
5591
5592         * testsuite/experimental/string_view/element_access/char/empty.cc:
5593         Fix year range in copyright header.
5594
5595 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
5596
5597         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
5598         Fix year range in copyright header.
5599
5600 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
5601
5602         Update copyright years.
5603 \f
5604 Copyright (C) 2019 Free Software Foundation, Inc.
5605
5606 Copying and distribution of this file, with or without modification,
5607 are permitted in any medium without royalty provided the copyright
5608 notice and this notice are preserved.