libstdc++-v3/ChangeLog

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