gcc.git
6 years ago[2/n] PR85694: Attach a DEF_SEQ only to the original statement
Richard Sandiford [Wed, 20 Jun 2018 08:06:27 +0000 (08:06 +0000)]
[2/n] PR85694: Attach a DEF_SEQ only to the original statement

A pattern's PATTERN_DEF_SEQ was attached to both the original statement
and the main pattern statement, which made it harder to update later.
This patch attaches it to just the original statement.  In practice,
anything that cared had ready access to both.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* tree-vectorizer.h (_stmt_vec_info): Note above pattern_def_seq
that the sequence is attached to the original statement rather
than the pattern statement.
* tree-vect-loop.c (vect_determine_vf_for_stmt): Take the
PATTERN_DEF_SEQ from the original statement rather than
the main pattern statement.
* tree-vect-stmts.c (free_stmt_vec_info): Likewise.
* tree-vect-patterns.c (vect_recog_dot_prod_pattern): Likewise.
(vect_mark_pattern_stmts): Don't copy the PATTERN_DEF_SEQ.

From-SVN: r261785

6 years ago[1/n] PR85694: Allow pattern definition statements to be reused
Richard Sandiford [Wed, 20 Jun 2018 08:05:41 +0000 (08:05 +0000)]
[1/n] PR85694: Allow pattern definition statements to be reused

This patch is the first part of a series to fix to PR85694.
Later patches can make the pattern for a statement S2 reuse the
results of a PATTERN_DEF_SEQ statement attached to an earlier
statement S1.  Although vect_mark_stmts_to_be_vectorized handled
this fine, vect_analyze_stmt and vect_transform_loop both skipped the
PATTERN_DEF_SEQ for S1 if S1's main pattern wasn't live or relevant.

I couldn't wrap my head around the flow in vect_transform_loop,
so ended up moving the per-statement handling into a subroutine.
That makes the patch look bigger than it actually is.

2018-06-20  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* tree-vect-stmts.c (vect_analyze_stmt): Move the handling of pattern
definition statements before the early exit for statements that aren't
live or relevant.
* tree-vect-loop.c (vect_transform_loop_stmt): New function,
split out from...
(vect_transform_loop): ...here.  Process pattern definition
statements without first checking whether the main pattern
statement is live or relevant.

From-SVN: r261784

6 years agoDaily bump.
GCC Administrator [Wed, 20 Jun 2018 00:16:57 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r261779

6 years agoWrap is_static with COLLECT_EXPORT_LIST
David Edelsohn [Tue, 19 Jun 2018 22:42:37 +0000 (18:42 -0400)]
Wrap is_static with COLLECT_EXPORT_LIST

From-SVN: r261775

6 years agoPR middle-end/85602 - -Warray-bounds fails to detect the out of bound array access
Martin Sebor [Tue, 19 Jun 2018 22:35:45 +0000 (22:35 +0000)]
PR middle-end/85602 - -Warray-bounds fails to detect the out of bound array access

gcc/testsuite/ChangeLog:
  * c-c++-common/attr-nonstring-8.c: Adjust text of expected warning
  to also match C++.

From-SVN: r261774

6 years agotree-cfgcleanup.c (tree_forwarder_block_p): Do not return false at -O0 if the locus...
Eric Botcazou [Tue, 19 Jun 2018 21:31:44 +0000 (21:31 +0000)]
tree-cfgcleanup.c (tree_forwarder_block_p): Do not return false at -O0 if the locus represent UNKNOWN_LOCATION but have...

* tree-cfgcleanup.c (tree_forwarder_block_p): Do not return false at
-O0 if the locus represent UNKNOWN_LOCATION but have different values.

From-SVN: r261770

6 years agors6000-string.c (select_block_compare_mode): Check TARGET_EFFICIENT_OVERLAPPING_UNALI...
Aaron Sawdey [Tue, 19 Jun 2018 21:23:39 +0000 (21:23 +0000)]
rs6000-string.c (select_block_compare_mode): Check TARGET_EFFICIENT_OVERLAPPING_UNALIGNED here instead of in caller.

2018-06-19  Aaron Sawdey  <acsawdey@linux.ibm.com>

* config/rs6000/rs6000-string.c (select_block_compare_mode): Check
TARGET_EFFICIENT_OVERLAPPING_UNALIGNED here instead of in caller.
(do_and3, do_and3_mask, do_compb3, do_rotl3): New functions.
(expand_block_compare): Change select_block_compare_mode call.
(expand_strncmp_align_check): Use new functions, fix comment.
(emit_final_str_compare_gpr): New function.
(expand_strn_compare): Refactor and clean up code.
* config/rs6000/vsx.md (vsx_mov<mode>_64bit): Remove *.

From-SVN: r261769

6 years agocollect2.c (static_obj): New variable.
Tony Reix [Tue, 19 Jun 2018 19:17:46 +0000 (19:17 +0000)]
collect2.c (static_obj): New variable.

2018-06-19  Tony Reix  <tony.reix@atos.com>
            Damien Bergamini  <damien.bergamini@atos.com>
            David Edelsohn  <dje.gcc@gmail.com>

        * collect2.c (static_obj): New variable.
        (static_libs): New variable.
        (is_in_list): Uncomment declaration.
        (main): Track AIX libraries linked statically.
        (is_in_list): Uncomment definition.
        (scan_prog_file): Don't add AIX shared libraries initializer
        to constructor list if linking statically.

Co-Authored-By: Damien Bergamini <damien.bergamini@atos.com>
Co-Authored-By: David Edelsohn <dje.gcc@gmail.com>
From-SVN: r261759

6 years agocp-tree.h (CONSTRUCTOR_NO_IMPLICIT_ZERO): Remove.
Jason Merrill [Tue, 19 Jun 2018 18:59:51 +0000 (14:59 -0400)]
cp-tree.h (CONSTRUCTOR_NO_IMPLICIT_ZERO): Remove.

* cp-tree.h (CONSTRUCTOR_NO_IMPLICIT_ZERO): Remove.

* constexpr.c: Use CONSTRUCTOR_NO_CLEARING instead.

From-SVN: r261758

6 years agoPR c++/86192 - ICE with anonymous union passed to template.
Jason Merrill [Tue, 19 Jun 2018 18:46:51 +0000 (14:46 -0400)]
PR c++/86192 - ICE with anonymous union passed to template.

* pt.c (tsubst_expr) [DECL_EXPR]: Handle an anonymous union type
used to declare a named variable.

From-SVN: r261757

6 years agoxtensa: fix PR target/65416
Max Filippov [Tue, 19 Jun 2018 18:26:07 +0000 (18:26 +0000)]
xtensa: fix PR target/65416

The issue is caused by reordering of stack pointer update after stack
space allocation with instructions that write to the allocated stack
space. In windowed ABI register spill area for the previous call frame
is located just below the stack pointer and may be reloaded back into
the register file on movsp.
Implement allocate_stack pattern for windowed ABI configuration and
insert an instruction that prevents reordering of frame memory access
and stack pointer update.

gcc/
2018-06-19  Max Filippov  <jcmvbkbc@gmail.com>

* config/xtensa/xtensa.md (UNSPEC_FRAME_BLOCKAGE): New unspec
constant.
(allocate_stack, frame_blockage, *frame_blockage): New patterns.

From-SVN: r261755

6 years agore PR middle-end/85602 (-Wsizeof-pointer-memaccess for strncat with size of source)
Martin Sebor [Tue, 19 Jun 2018 17:30:47 +0000 (17:30 +0000)]
re PR middle-end/85602 (-Wsizeof-pointer-memaccess for strncat with size of source)

gcc/testsuite/ChangeLog:

PR middle-end/85602
* c-c++-common/attr-nonstring-8.c: Adjust text of expected warning
to also match C++.

From-SVN: r261751

6 years agoRemove unused <exception> header from <utility>
Jonathan Wakely [Tue, 19 Jun 2018 17:19:16 +0000 (18:19 +0100)]
Remove unused <exception> header from <utility>

This header was needed for the declaration of std::terminate but the
calls to it were removed in r242401.

* include/std/utility: Remove unused <exception> header.

From-SVN: r261749

6 years agotree.c (find_decls_types_r): Remove all non-VAR_DECLs from blocks.
Jan Hubicka [Tue, 19 Jun 2018 15:56:27 +0000 (17:56 +0200)]
tree.c (find_decls_types_r): Remove all non-VAR_DECLs from blocks.

* tree.c (find_decls_types_r): Remove all non-VAR_DECLs from
blocks.
* g++.dg/lto/pr84805_0.C: Update template.
* g++.dg/lto/pr84805_1.C: Update template.

From-SVN: r261748

6 years ago* es.po: Update.
Joseph Myers [Tue, 19 Jun 2018 15:04:55 +0000 (16:04 +0100)]
* es.po: Update.

From-SVN: r261745

6 years agoClean-up usage of ipa_fn_summary and ipa_call_summary summaries.
Martin Liska [Tue, 19 Jun 2018 14:31:20 +0000 (16:31 +0200)]
Clean-up usage of ipa_fn_summary and ipa_call_summary summaries.

2018-06-19  Martin Liska  <mliska@suse.cz>

* config/i386/i386.c (ix86_can_inline_p): Do not use
        ipa_fn_summaries::get_create.
* ipa-cp.c (ipcp_cloning_candidate_p): Replace get_create with
        get.
(devirtualization_time_bonus): Likewise.
(ipcp_propagate_stage): Likewise.
* ipa-fnsummary.c (redirect_to_unreachable): Likewise.
(edge_set_predicate): Likewise.
(evaluate_conditions_for_known_args): Likewise.
(evaluate_properties_for_edge): Likewise.
(ipa_call_summary::reset): Tranform to ...
(ipa_call_summary::~ipa_call_summary): ... this.
(ipa_fn_summary::reset): Transform to ...
(ipa_fn_summary::~ipa_fn_summary): ... this.
(ipa_fn_summary_t::remove): Rename to ...
(ipa_fn_summary_t::remove_callees): ... this.
(ipa_fn_summary_t::duplicate): Use placement new
        instead of memory copy.
(ipa_call_summary_t::duplicate): Likewise.
(ipa_call_summary_t::remove): Remove.
(dump_ipa_call_summary): Change get_create to get.
(ipa_dump_fn_summary): Dump only when summary exists.
(analyze_function_body): Use symbol_summary::get instead
        of get_create.
(compute_fn_summary): Likewise.
(estimate_edge_devirt_benefit): Likewise.
(estimate_edge_size_and_time): Likewise.
(inline_update_callee_summaries): Likewise.
(remap_edge_change_prob): Likewise.
(remap_edge_summaries): Likewise.
(ipa_merge_fn_summary_after_inlining): Likewise.
(write_ipa_call_summary): Likewise.
(ipa_fn_summary_write): Likewise.
(ipa_free_fn_summary): Likewise.
* ipa-fnsummary.h (struct GTY): Add new ctor and copy ctor.
(struct ipa_call_summary): Likewise.
* ipa-icf.c (sem_function::merge): Use symbol_summary::get instead
        of get_create.
* ipa-inline-analysis.c (do_estimate_edge_time): Likewise.
(estimate_size_after_inlining): Likewise.
(estimate_growth): Likewise.
(growth_likely_positive): Likewise.
* ipa-inline-transform.c (clone_inlined_nodes): Likewise.
(inline_call): Likewise.
* ipa-inline.c (caller_growth_limits): Likewise.
(can_inline_edge_p): Likewise.
(can_inline_edge_by_limits_p): Likewise.
(compute_uninlined_call_time): Likewise.
(compute_inlined_call_time): Likewise.
(want_inline_small_function_p): Likewise.
(edge_badness): Likewise.
(update_caller_keys): Likewise.
(update_callee_keys): Likewise.
(inline_small_functions): Likewise.
(inline_to_all_callers_1): Likewise.
(dump_overall_stats): Likewise.
(early_inline_small_functions): Likewise.
(early_inliner): Likewise.
* ipa-profile.c (ipa_propagate_frequency_1): Likewise.
* ipa-prop.c (ipa_make_edge_direct_to_target): Likewise.
* ipa-pure-const.c (malloc_candidate_p): Likewise.
* ipa-split.c (execute_split_functions): Likewise.
* symbol-summary.h: Likewise.
* tree-sra.c (ipa_sra_preliminary_function_checks): Likewise.
2018-06-19  Martin Liska  <mliska@suse.cz>

* lto-partition.c (add_symbol_to_partition_1): Use symbol_summary::get instead
        of get_create.
(undo_partition): Likewise.
(lto_balanced_map): Likewise.

From-SVN: r261744

6 years agoImprove gimple.vim syntax file.
Martin Liska [Tue, 19 Jun 2018 12:46:26 +0000 (12:46 +0000)]
Improve gimple.vim syntax file.

From-SVN: r261742

6 years agoAdd initial version of rtl.vim syntax file.
Martin Liska [Tue, 19 Jun 2018 12:45:57 +0000 (14:45 +0200)]
Add initial version of rtl.vim syntax file.

2018-06-19  Martin Liska  <mliska@suse.cz>

* gcc-rtl.vim: New file.

From-SVN: r261741

6 years agotree-vectorizer.c (try_vectorize_loop_1): Split out of ...
Richard Biener [Tue, 19 Jun 2018 12:25:06 +0000 (12:25 +0000)]
tree-vectorizer.c (try_vectorize_loop_1): Split out of ...

2018-06-19  Richard Biener  <rguenther@suse.de>

* tree-vectorizer.c (try_vectorize_loop_1): Split out of ...
(vectorize_loops): ... here.  Fix dbgcnt handling.
(try_vectorize_loop): Wrap try_vectorize_loop_1.

From-SVN: r261740

6 years agoAllow building of the zlib component when the building takes place in the source...
Nick Clifton [Tue, 19 Jun 2018 11:49:08 +0000 (11:49 +0000)]
Allow building of the zlib component when the building takes place in the source directory.

* zlib/configure.ac: Restore old behaviour of only enabling
multilibs when a target subdirectory is defined.  This allows
building with srcdir == builddir.
* zlib/configure: Regenerate.

From-SVN: r261739

6 years agors6000: Fix vector homogeneous aggregates (PR86197)
Segher Boessenkool [Tue, 19 Jun 2018 10:52:39 +0000 (12:52 +0200)]
rs6000: Fix vector homogeneous aggregates (PR86197)

The existing code allows only 4 vectors worth of ieee128 homogeneous
aggregates, but it should be 8.  This happens because at one spot it
is mistakenly qualified as being passed in floating point registers.

PR target/86197
* config/rs6000/rs6000.md (rs6000_discover_homogeneous_aggregate): An
ieee128 argument takes up only one (vector) register, not two (floating
point) registers.

From-SVN: r261738

6 years agogimplify.c (gimplify_init_constructor): Really never clear for an incomplete construc...
Eric Botcazou [Tue, 19 Jun 2018 09:37:31 +0000 (09:37 +0000)]
gimplify.c (gimplify_init_constructor): Really never clear for an incomplete constructor if CONSTRUCTOR_NO_CLEARING is set.

* gimplify.c (gimplify_init_constructor): Really never clear for an
incomplete constructor if CONSTRUCTOR_NO_CLEARING is set.

From-SVN: r261735

6 years agoRemove unused stagestuff in config-lang.in.
Martin Liska [Tue, 19 Jun 2018 09:03:55 +0000 (11:03 +0200)]
Remove unused stagestuff in config-lang.in.

2018-06-19  Martin Liska  <mliska@suse.cz>

* config-lang.in: Remove stagestuff.

From-SVN: r261733

6 years agore PR tree-optimization/86179 (ice in get_later_stmt, at tree-vectorizer.h:1108)
Richard Biener [Tue, 19 Jun 2018 06:53:04 +0000 (06:53 +0000)]
re PR tree-optimization/86179 (ice in get_later_stmt, at tree-vectorizer.h:1108)

2018-06-19  Richard Biener  <rguenther@suse.de>

PR tree-optimization/86179
* tree-vect-patterns.c (vect_pattern_recog_1): Clean up
after failed recognition.

* gcc.dg/pr86179.c: New testcase.

From-SVN: r261731

6 years agotree.c (cp_expr_location): New.
Jason Merrill [Tue, 19 Jun 2018 00:38:44 +0000 (20:38 -0400)]
tree.c (cp_expr_location): New.

* tree.c (cp_expr_location): New.

* cp-tree.h (cp_expr_loc_or_loc): New.
* call.c, cvt.c, constexpr.c, constraint.cc, cp-gimplify.c, decl.c,
error.c, init.c, lex.c, parser.c, pt.c, semantics.c, typeck.c,
typeck2.c: Use it instead of EXPR_LOC_OR_LOC.

From-SVN: r261728

6 years agoUse a range for LAMBDA_EXPR_LOCATION.
Jason Merrill [Tue, 19 Jun 2018 00:38:38 +0000 (20:38 -0400)]
Use a range for LAMBDA_EXPR_LOCATION.

* parser.c (cp_parser_lambda_expression): Use a range for
LAMBDA_EXPR_LOCATION.

From-SVN: r261727

6 years agoPR c++/86200 - ICE with unexpanded pack in lambda parameter.
Jason Merrill [Tue, 19 Jun 2018 00:38:32 +0000 (20:38 -0400)]
PR c++/86200 - ICE with unexpanded pack in lambda parameter.

* pt.c (find_parameter_packs_r) [LAMBDA_EXPR]: Also look into the
function type.

From-SVN: r261726

6 years agoPR c++/81060 - ICE with unexpanded parameter pack.
Jason Merrill [Tue, 19 Jun 2018 00:38:26 +0000 (20:38 -0400)]
PR c++/81060 - ICE with unexpanded parameter pack.

* pt.c (check_for_bare_parameter_packs): Add loc parameter.
* decl.c (grokdeclarator): Call it for qualifying_scope.

From-SVN: r261725

6 years agoDaily bump.
GCC Administrator [Tue, 19 Jun 2018 00:16:40 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r261724

6 years agoPR middle-end/85602 - -Wsizeof-pointer-memaccess for strncat with size of source
Martin Sebor [Mon, 18 Jun 2018 22:17:57 +0000 (22:17 +0000)]
PR middle-end/85602 - -Wsizeof-pointer-memaccess for strncat with size of source

gcc/c-family/ChangeLog:

PR middle-end/85602
* c-warn.c (sizeof_pointer_memaccess_warning): Check for attribute
nonstring.

gcc/ChangeLog:

PR middle-end/85602
* calls.c (maybe_warn_nonstring_arg): Handle strncat.
* tree-ssa-strlen.c (is_strlen_related_p): Make extern.
Handle integer subtraction.
(maybe_diag_stxncpy_trunc): Handle nonstring source arguments.
* tree-ssa-strlen.h (is_strlen_related_p): Declare.

gcc/testsuite/ChangeLog:

PR middle-end/85602
* gcc.dg/attr-nonstring-2.c: Adjust text of expected warning.
* c-c++-common/attr-nonstring-8.c: New test.

From-SVN: r261718

6 years agoMakefile.def (fortran): Add check-target-libgomp-fortran.
Eric Botcazou [Mon, 18 Jun 2018 22:01:58 +0000 (22:01 +0000)]
Makefile.def (fortran): Add check-target-libgomp-fortran.

* Makefile.def (fortran): Add check-target-libgomp-fortran.
* Makefile.tpl (check-target-libgomp-fortran): New phony target.
* Makefile.in: Regenerate.

From-SVN: r261717

6 years agoLWG 2975 ensure construct(pair<T,U>*, ...) used to construct pairs
Jonathan Wakely [Mon, 18 Jun 2018 20:17:44 +0000 (21:17 +0100)]
LWG 2975 ensure construct(pair<T,U>*, ...) used to construct pairs

* include/std/scoped_allocator (__not_pair): Define SFINAE helper.
(construct(_Tp*, _Args&&...)): Remove from overload set when _Tp is
a specialization of std::pair.
* testsuite/20_util/scoped_allocator/construct_pair.cc: Ensure
pair elements are constructed correctly.

From-SVN: r261716

6 years agoMore rtx to rtx_insn * cleanups
David Malcolm [Mon, 18 Jun 2018 19:59:13 +0000 (19:59 +0000)]
More rtx to rtx_insn * cleanups

gcc/ChangeLog:
* config/frv/frv-protos.h (frv_ifcvt_modify_insn): Strengthen 3rd
param from rtx to rtx_insn *.
* config/frv/frv.c (frv_ifcvt_add_insn): Likewise for "insn"
param.
(frv_ifcvt_modify_insn): Likwise.
(frv_ifcvt_modify_final): Likwise for local "existing_insn",
adding an as_a <rtx_insn *> cast.  Likewise for local "insn".
* config/mips/mips.c (r10k_insert_cache_barriers): Add an
as_a <rtx_insn *> cast to local "unprotected_region" once
it's been established that it's not NULL or pc_rtx.
* config/nds32/nds32-relax-opt.c (nds32_group_insns): Strengthen
param "sethi" from rtx to rtx_insn *.
(nds32_group_float_insns): Likewise for param "insn".
* config/vax/vax-protos.h (vax_output_int_add): Likewise for 1st
param.
(vax_output_int_subtract): Likewise.
* config/vax/vax.c (vax_output_int_add): Likewise for param
"insn".
(vax_output_int_subtract): Likewise.
* emit-rtl.c (set_insn_deleted): Likewise, removing cast.
(emit_pattern_after): Likewise for param "after".
(emit_insn_after): Likewise.
(emit_jump_insn_after): Likewise.
(emit_call_insn_after): Likewise.
(emit_debug_insn_after): Likewise.
(emit_pattern_before): Likewise for param "before".
(emit_insn_before): Likewise.
(emit_jump_insn_before): Likewise.
* final.c (get_insn_template): Likewise for param "insn", removing
a cast.
* output.h (get_insn_template): Likewise for 2nd param.
* rtl.h (emit_insn_before): Likewise.
(emit_jump_insn_before): Likewise.
(emit_debug_insn_before_noloc): Likewise.
(emit_insn_after): Likewise.
(emit_jump_insn_after): Likewise.
(emit_call_insn_after): Likewise.
(emit_debug_insn_after): Likewise.
(set_insn_deleted): Likewise for param.

From-SVN: r261715

6 years agore PR target/85358 (PowerPC: Using -mabi=ieeelongdouble -mcpu=power9 breaks __ibm128)
Michael Meissner [Mon, 18 Jun 2018 19:10:08 +0000 (19:10 +0000)]
re PR target/85358 (PowerPC: Using -mabi=ieeelongdouble -mcpu=power9 breaks __ibm128)

[gcc]
2018-06-18  Michael Meissner  <meissner@linux.ibm.com>

PR target/85358
* config/rs6000/rs6000-modes.def (toplevel): Rework the 128-bit
floating point modes, so that IFmode is numerically greater than
TFmode, which is greater than KFmode using FRACTIONAL_FLOAT_MODE
to declare the ordering.  This prevents IFmode from being
converted to TFmode when long double is IEEE 128-bit on an ISA 3.0
machine.  Include rs6000-modes.h to share the fractional values
between genmodes* and the rest of the compiler.
(IFmode): Likewise.
(KFmode): Likewise.
(TFmode): Likewise.
* config/rs6000/rs6000-modes.h: New file.
* config/rs6000/rs6000.c (rs6000_debug_reg_global): Change the
meaning of rs6000_long_double_size so that 126..128 selects an
appropriate 128-bit floating point type.
(rs6000_option_override_internal): Likewise.
* config/rs6000/rs6000.h (toplevel): Include rs6000-modes.h.
(TARGET_LONG_DOUBLE_128): Change the meaning of
rs6000_long_double_size so that 126..128 selects an appropriate
128-bit floating point type.
(LONG_DOUBLE_TYPE_SIZE): Update comment.
* config/rs6000/rs6000.md (trunciftf2): Correct the modes of the
source and destination to match the standard usage.
(truncifkf2): Likewise.
(copysign<mode>3, IEEE iterator): Rework copysign of float128 on
ISA 2.07 to use an explicit clobber, instead of passing in a
temporary.
(copysign<mode>3_soft): Likewise.

[libgcc]
2018-06-18  Michael Meissner  <meissner@linux.ibm.com>

* config/rs6000/t-float128 (FP128_CFLAGS_SW): Compile float128
support modules with -mno-gnu-attribute.
* config/rs6000/t-float128-hw (FP128_CFLAGS_HW): Likewise.

From-SVN: r261712

6 years agoLWG 2989 hide path iostream operators from normal lookup
Jonathan Wakely [Mon, 18 Jun 2018 18:59:44 +0000 (19:59 +0100)]
LWG 2989 hide path iostream operators from normal lookup

By only defining these operators as friends (with no namespace-scope
declaration) they can only be found by ADL and do not participate in
overload resolution for arguments of types other than path.

LWG 2989 hide path iostream operators from normal lookup
* include/bits/fs_path.h (operator<<, operator>>): Define inline as
friends.
* testsuite/27_io/filesystem/path/io/dr2989.cc: New.

From-SVN: r261711

6 years agoIntroduce DUMP_VECT_SCOPE macro
David Malcolm [Mon, 18 Jun 2018 18:49:40 +0000 (18:49 +0000)]
Introduce DUMP_VECT_SCOPE macro

gcc/ChangeLog:
* tree-vect-data-refs.c (vect_analyze_data_ref_dependences):
Replace dump_printf_loc call with DUMP_VECT_SCOPE.
(vect_slp_analyze_instance_dependence): Likewise.
(vect_enhance_data_refs_alignment): Likewise.
(vect_analyze_data_refs_alignment): Likewise.
(vect_slp_analyze_and_verify_instance_alignment
(vect_analyze_data_ref_accesses): Likewise.
(vect_prune_runtime_alias_test_list): Likewise.
(vect_analyze_data_refs): Likewise.
* tree-vect-loop-manip.c (vect_update_inits_of_drs): Likewise.
* tree-vect-loop.c (vect_determine_vectorization_factor): Likewise.
(vect_analyze_scalar_cycles_1): Likewise.
(vect_get_loop_niters): Likewise.
(vect_analyze_loop_form_1): Likewise.
(vect_update_vf_for_slp): Likewise.
(vect_analyze_loop_operations): Likewise.
(vect_analyze_loop): Likewise.
(vectorizable_induction): Likewise.
(vect_transform_loop): Likewise.
* tree-vect-patterns.c (vect_pattern_recog): Likewise.
* tree-vect-slp.c (vect_analyze_slp): Likewise.
(vect_make_slp_decision): Likewise.
(vect_detect_hybrid_slp): Likewise.
(vect_slp_analyze_operations): Likewise.
(vect_slp_bb): Likewise.
* tree-vect-stmts.c (vect_mark_stmts_to_be_vectorized): Likewise.
(vectorizable_bswap): Likewise.
(vectorizable_call): Likewise.
(vectorizable_simd_clone_call): Likewise.
(vectorizable_conversion): Likewise.
(vectorizable_assignment): Likewise.
(vectorizable_shift): Likewise.
(vectorizable_operation): Likewise.
* tree-vectorizer.h (DUMP_VECT_SCOPE): New macro.

From-SVN: r261710

6 years agoPR c++/86171 - ICE with recursive alias instantiation.
Jason Merrill [Mon, 18 Jun 2018 18:16:38 +0000 (14:16 -0400)]
PR c++/86171 - ICE with recursive alias instantiation.

* pt.c (tsubst_decl): Handle recursive alias instantiation.

From-SVN: r261709

6 years agoLWG 3050 Fix cv-qualification of convertibility constraints
Jonathan Wakely [Mon, 18 Jun 2018 18:02:24 +0000 (19:02 +0100)]
LWG 3050 Fix cv-qualification of convertibility constraints

LWG 3050 Fix cv-qualification of convertibility constraints
* include/std/chrono (duration, operator*, operator/, operator%): Use
const-qualified type as source type in is_convertible constraints.
* testsuite/20_util/duration/arithmetic/dr3050.cc: New.
* testsuite/20_util/duration/cons/dr3050.cc: New.
* testsuite/20_util/duration/literals/range.cc: Rename to...
* testsuite/20_util/duration/literals/range_neg.cc: Here. Adjust
dg-error lineno.

From-SVN: r261708

6 years agocrossconfig.m4: Handle OpenBSD just like NetBSD.
Maya Rashish [Mon, 18 Jun 2018 17:28:53 +0000 (17:28 +0000)]
crossconfig.m4: Handle OpenBSD just like NetBSD.

2018-06-18  Maya Rashish  <coypu@sdf.org>

* crossconfig.m4: Handle OpenBSD just like NetBSD.
* configure: Rebuilt.

* config/alpha/openbsd.h (TARGET_DEFAULT): Define.
(LINK_SPEC, STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
(INTMAX_TYPE, UINTMAX_TYPE, WINT_TYPE): Likewise.

* config/alpha/elf.h (STARTFILE_SPEC, ENDFILE_SPEC): Move from
here to ...
* config/alpha/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Here.

From-SVN: r261707

6 years agoP0754R2 <version> header
Jonathan Wakely [Mon, 18 Jun 2018 16:42:11 +0000 (17:42 +0100)]
P0754R2 <version> header

* include/Makefile.am: Add new header.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Change doxygen comment to suggest <version>
instead of <iosfwd>.
* include/precompiled/stdc++.h: Include <cwchar> and <cwctype>
unconditionally.  Add C++17 and C++20 headers.
* include/std/version: New header.
* testsuite/17_intro/headers/c++2017/all_attributes.cc: New.
* testsuite/17_intro/headers/c++2017/all_no_exceptions.cc: New.
* testsuite/17_intro/headers/c++2017/all_no_rtti.cc: New.
* testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc: New.
* testsuite/17_intro/headers/c++2017/operator_names.cc: New.
* testsuite/17_intro/headers/c++2017/stdc++.cc: New.
* testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc:
New.
* testsuite/17_intro/headers/c++2020/all_attributes.cc: New.
* testsuite/17_intro/headers/c++2020/all_no_exceptions.cc: New.
* testsuite/17_intro/headers/c++2020/all_no_rtti.cc: New.
* testsuite/17_intro/headers/c++2020/all_pedantic_errors.cc: New.
* testsuite/17_intro/headers/c++2020/operator_names.cc: New.
* testsuite/17_intro/headers/c++2020/stdc++.cc: New.
* testsuite/17_intro/headers/c++2020/stdc++_multiple_inclusion.cc:
New.
* testsuite/18_support/headers/version/macros.cc: New.
* testsuite/18_support/headers/version/macros.cc: New.

From-SVN: r261706

6 years agoPR tree-optimization/81384 - built-in form of strnlen missing
Martin Sebor [Mon, 18 Jun 2018 16:32:59 +0000 (16:32 +0000)]
PR tree-optimization/81384 - built-in form of strnlen missing

gcc/ChangeLog:

PR tree-optimization/81384
* builtin-types.def (BT_FN_SIZE_CONST_STRING_SIZE): New.
* builtins.c (expand_builtin_strnlen): New function.
(expand_builtin): Call it.
(fold_builtin_n): Avoid setting TREE_NO_WARNING.
* builtins.def (BUILT_IN_STRNLEN): New.
* calls.c (maybe_warn_nonstring_arg): Handle BUILT_IN_STRNLEN.
Warn for bounds in excess of maximum object size.
* tree-ssa-strlen.c (maybe_set_strlen_range): Return tree representing
single-value ranges.  Handle strnlen.
(handle_builtin_strlen): Handle strnlen.
(strlen_check_and_optimize_stmt): Same.
* doc/extend.texi (Other Builtins): Document strnlen.

gcc/testsuite/ChangeLog:

PR tree-optimization/81384
* gcc.c-torture/execute/builtins/lib/strnlen.c: New test.
* gcc.c-torture/execute/builtins/strnlen-lib.c: New test.
* gcc.c-torture/execute/builtins/strnlen.c: New test.
* gcc.dg/attr-nonstring-2.c: New test.
* gcc.dg/attr-nonstring-3.c: New test.
* gcc.dg/attr-nonstring-4.c: New test.
* gcc.dg/strlenopt-45.c: New test.
* gcc.dg/strlenopt.h (strnlen):  Declare.

From-SVN: r261705

6 years agoFix bootstrap failure for bare metal due to autoconf link tests
Jonathan Wakely [Mon, 18 Jun 2018 16:01:24 +0000 (17:01 +0100)]
Fix bootstrap failure for bare metal due to autoconf link tests

The AC_CHECK_FUNCS tests cause the build to fail for bare metal cross
compilers, where link tests are not allowed. Replace them with
GCC_TRY_COMPILE_OR_LINK tests instead. Skip all the Filesystem
dependency checks if not building the filesystem library.

* acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Only check when
enable_libstdcxx_filesystem_ts = yes. Check for link, readlink and
symlink.
* config.h.in: Regenerate.
* configure: Regenerate.
* configure.ac: Remove AC_CHECK_FUNCS for link, readlink and symlink.

From-SVN: r261704

6 years agoLWG 3035. std::allocator's constructors should be constexpr
Jonathan Wakely [Mon, 18 Jun 2018 15:47:07 +0000 (16:47 +0100)]
LWG 3035. std::allocator's constructors should be constexpr

LWG 3035. std::allocator's constructors should be constexpr
* include/bits/allocator.h (allocator): Add constexpr to constructors
for C++2a. Replace dynamic exception specifications with NOTHROW
macro.
(allocator, operator==, operator!=): Replace USE_NOEXCEPT macro with
NOTHROW.
* include/bits/c++config (_GLIBCXX20_CONSTEXPR): Define.
* include/ext/malloc_allocator.h (malloc_allocator): Add constexpr
to constructors for C++2a.
* include/ext/new_allocator.h (new_allocator): Likewise.

From-SVN: r261703

6 years agodecl.c (duplicate_decls): Consistently use DECL_SOURCE_LOCATION in errors about redef...
Paolo Carlini [Mon, 18 Jun 2018 14:34:50 +0000 (14:34 +0000)]
decl.c (duplicate_decls): Consistently use DECL_SOURCE_LOCATION in errors about redefined default...

2018-06-18  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (duplicate_decls): Consistently use DECL_SOURCE_LOCATION
in errors about redefined default arguments; tidy.

From-SVN: r261702

6 years agotree.c (escaped_string::escape): Replace cast to char * by const_cast<char *> (unesca...
Prathamesh Kulkarni [Mon, 18 Jun 2018 14:04:37 +0000 (14:04 +0000)]
tree.c (escaped_string::escape): Replace cast to char * by const_cast<char *> (unescaped).

2018-06-18  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

* tree.c (escaped_string::escape): Replace cast to char * by
const_cast<char *> (unescaped).

From-SVN: r261700

6 years ago[testsuite] Add target pthread to pr86076.c
Wilco Dijkstra [Mon, 18 Jun 2018 12:17:10 +0000 (12:17 +0000)]
[testsuite] Add target pthread to pr86076.c

Add missing target pthread to ensure test doesn't fail on bare-metal
targets. Committed as obvious.

    testsuite/
PR tree-optimization/86076
* gcc.dg/pr86076.c: Add target pthread for bare-metal targets.

From-SVN: r261699

6 years ago[testsuite] Remove xfail from vect-abs-compile.c
Wilco Dijkstra [Mon, 18 Jun 2018 11:10:51 +0000 (11:10 +0000)]
[testsuite] Remove xfail from vect-abs-compile.c

Since PR64946 has been fixed, we can remove the xfail from this test.
Committed as obvious.

    testsuite/
PR tree-optimization/64946
* gcc.target/aarch64/vect-abs-compile.c: Remove xfail.

From-SVN: r261698

6 years agoEnsure that control characters in user supplied error and warning messages are escaped.
Nick Clifton [Mon, 18 Jun 2018 10:39:01 +0000 (10:39 +0000)]
Ensure that control characters in user supplied error and warning messages are escaped.

PR 84195
* tree.c (escaped_string): New class.  Converts an unescaped
string into its escaped equivalent.
(warn_deprecated_use): Use the new class to convert the
deprecation message, if present.
(test_escaped_strings): New self test.
(test_c_tests): Add test_escaped_strings.

From-SVN: r261697

6 years agotree.c (decl_value_expr_lookup): Revert latest change.
Eric Botcazou [Mon, 18 Jun 2018 07:52:22 +0000 (07:52 +0000)]
tree.c (decl_value_expr_lookup): Revert latest change.

* tree.c (decl_value_expr_lookup): Revert latest change.
(decl_value_expr_insert): Likewise.
fortran/
* trans-decl.c (gfc_get_fake_result_decl): Revert latest change.

From-SVN: r261696

6 years agoDaily bump.
GCC Administrator [Mon, 18 Jun 2018 00:16:42 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r261695

6 years agoRemove superfluous prefix
Eric Botcazou [Sun, 17 Jun 2018 14:24:46 +0000 (14:24 +0000)]
Remove superfluous prefix

From-SVN: r261688

6 years agogimplify.c (nonlocal_vlas): Delete.
Eric Botcazou [Sun, 17 Jun 2018 11:36:58 +0000 (11:36 +0000)]
gimplify.c (nonlocal_vlas): Delete.

* gimplify.c (nonlocal_vlas): Delete.
(nonlocal_vla_vars): Likewise.
(gimplify_var_or_parm_decl): Do not add debug VAR_DECLs for non-local
referenced VLAs.
(gimplify_body): Do not create and destroy nonlocal_vlas.
* tree-nested.c: Include diagnostic.h.
(use_pointer_in_frame): Tweak.
(lookup_field_for_decl): Add assertion and declare the transformation.
(convert_nonlocal_reference_op) <PARM_DECL>: Rework and issue an
internal error when the reference is in a wrong context.  Do not
create a debug decl by default.
(note_nonlocal_block_vlas): Delete.
(convert_nonlocal_reference_stmt) <GIMPLE_BIND>: Do not call it.
(convert_local_reference_op) <PARM_DECL>: Skip the frame decl.  Do not
create a debug decl by default.
(convert_gimple_call) <GIMPLE_CALL>: Issue an internal error when the
call is in a wrong context.
(fixup_vla_decls): New function.
(finalize_nesting_tree_1): Adjust comment.  Call fixup_vla_decls if no
debug variables were created.
* tree.c (decl_value_expr_lookup): Add checking assertion.
(decl_value_expr_insert): Likewise.
fortran/
* fortran/trans-decl.c (nonlocal_dummy_decl_pset): Delete.
(nonlocal_dummy_decls): Likewise.
(gfc_nonlocal_dummy_array_decl): Likewise.
(gfc_get_symbol_decl): Do not call gfc_nonlocal_dummy_array_decl.
(gfc_get_fake_result_decl): Do not generate a new DECL if simply
reusing the result of a recursive call.
(gfc_generate_function_code): Do not create, insert and destroy
nonlocal_dummy_decls.

From-SVN: r261687

6 years agoDaily bump.
GCC Administrator [Sun, 17 Jun 2018 00:16:41 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r261686

6 years agore PR middle-end/82479 (missing popcount builtin detection)
Kugan Vivekanandarajah [Sat, 16 Jun 2018 21:39:31 +0000 (21:39 +0000)]
re PR middle-end/82479 (missing popcount builtin detection)

gcc/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

PR middle-end/82479
* ipa-fnsummary.c (will_be_nonconstant_expr_predicate): Handle CALL_EXPR.
* tree-scalar-evolution.c (interpret_expr): Likewise.
(expression_expensive_p): Likewise.
* tree-ssa-loop-ivopts.c (contains_abnormal_ssa_name_p): Likewise.
* tree-ssa-loop-niter.c (number_of_iterations_popcount): New.
(number_of_iterations_exit_assumptions): Use number_of_iterations_popcount.
(ssa_defined_by_minus_one_stmt_p): New.

gcc/testsuite/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

PR middle-end/82479
* gcc.dg/tree-ssa/popcount.c: New test.
* gcc.dg/tree-ssa/popcount2.c: New test.

From-SVN: r261682

6 years agore PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c -...
Kugan Vivekanandarajah [Sat, 16 Jun 2018 21:34:29 +0000 (21:34 +0000)]
re PR tree-optimization/64946 ([AArch64] gcc.target/aarch64/vect-abs-compile.c - "abs" vectorization fails for char/short types)

gcc/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

PR middle-end/64946
* cfgexpand.c (expand_debug_expr): Hande ABSU_EXPR.
* config/i386/i386.c (ix86_add_stmt_cost): Likewise.
* dojump.c (do_jump): Likewise.
* expr.c (expand_expr_real_2): Check operand type's sign.
* fold-const.c (const_unop): Handle ABSU_EXPR.
(fold_abs_const): Likewise.
* gimple-pretty-print.c (dump_unary_rhs): Likewise.
* gimple-ssa-backprop.c (backprop::process_assign_use): Likesie.
(strip_sign_op_1): Likesise.
* match.pd: Add new pattern to generate ABSU_EXPR.
* optabs-tree.c (optab_for_tree_code): Handle ABSU_EXPR.
* tree-cfg.c (verify_gimple_assign_unary): Likewise.
* tree-eh.c (operation_could_trap_helper_p): Likewise.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node): Likewise.
* tree-vect-patterns.c (vect_recog_sad_pattern): Likewise.
* tree.def (ABSU_EXPR): New.

gcc/c-family/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

* c-common.c (c_common_truthvalue_conversion): Handle ABSU_EXPR.

gcc/c/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

* c-typeck.c (build_unary_op): Handle ABSU_EXPR;
* gimple-parser.c (c_parser_gimple_statement): Likewise.
(c_parser_gimple_unary_expression): Likewise.

gcc/cp/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

* constexpr.c (potential_constant_expression_1): Handle ABSU_EXPR.
* cp-gimplify.c (cp_fold): Likewise.

gcc/testsuite/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kuganv@linaro.org>

PR middle-end/64946
* gcc.dg/absu.c: New test.
* gcc.dg/gimplefe-29.c: New test.
* gcc.target/aarch64/pr64946.c: New test.

From-SVN: r261681

6 years agore PR middle-end/86095 (documentation for -Wunsafe-loop-optimizations references...
Jakub Jelinek [Sat, 16 Jun 2018 06:51:32 +0000 (08:51 +0200)]
re PR middle-end/86095 (documentation for -Wunsafe-loop-optimizations references options which have no effect any more)

PR middle-end/86095
* common.opt (Wunsafe-loop-optimizations): Add Ignore, remove Var,
documented as preserved for backward compatibility only.
* doc/invoke.texi: Remove -Wunsafe-loop-optimizations documentation.

From-SVN: r261679

6 years agore PR rtl-optimization/86108 (crash during unwinding with -O2)
Jakub Jelinek [Sat, 16 Jun 2018 06:50:31 +0000 (08:50 +0200)]
re PR rtl-optimization/86108 (crash during unwinding with -O2)

PR rtl-optimization/86108
* bb-reorder.c (create_forwarder_block): Renamed to ...
(create_eh_forwarder_block): ... this.  Split OLD_BB after labels and
jump from new landing pad to the second part.
(sjlj_fix_up_crossing_landing_pad, dw2_fix_up_crossing_landing_pad):
Adjust callers.

From-SVN: r261678

6 years agoPR c++/86147 - wrong capture for template argument.
Jason Merrill [Sat, 16 Jun 2018 06:35:53 +0000 (02:35 -0400)]
PR c++/86147 - wrong capture for template argument.

* expr.c (mark_use): Look through NOP_EXPR.

From-SVN: r261676

6 years agoconfig.guess: Import latest version.
Ben Elliston [Sat, 16 Jun 2018 03:32:40 +0000 (13:32 +1000)]
config.guess: Import latest version.

* config.guess: Import latest version.
* config.sub: Likewise.

From-SVN: r261675

6 years agoDaily bump.
GCC Administrator [Sat, 16 Jun 2018 00:16:50 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r261674

6 years agoLWG 3076 basic_string CTAD ambiguity
Jonathan Wakely [Fri, 15 Jun 2018 23:47:33 +0000 (00:47 +0100)]
LWG 3076 basic_string CTAD ambiguity

When deduction guides are supported by the compiler (i.e. for C++17 and
later) replace two basic_string constructors by constrained function
templates as required by LWG 3075. In order to ensure that the pre-C++17
non-template constructors are still exported from the shared library
define a macro in src/c++11/string-inst.cc to force the non-template
declarations (this isn't strictly needed yet, because the string
instantiations are compiled with -std=gnu++11, but that is likely to
change).

LWG 3076 basic_string CTAD ambiguity
* doc/xml/manual/intro.xml: Document LWG 3076 change.
* include/bits/basic_string.h
[__cpp_deduction_guides && !_GLIBCXX_DEFINING_STRING_INSTANTIATIONS]
(basic_string(const _CharT*, const _Alloc&)): Turn into a function
template constrained by _RequireAllocator.
(basic_string(size_type, _CharT, const _Alloc&)): Likewise.
* src/c++11/string-inst.cc (_GLIBCXX_DEFINING_STRING_INSTANTIATIONS):
Define.
* testsuite/21_strings/basic_string/cons/char/deduction.cc: Test
deduction
* testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
Likewise.

From-SVN: r261670

6 years agore PR c/86093 (volatile ignored on pointer in C)
Jakub Jelinek [Fri, 15 Jun 2018 20:53:54 +0000 (22:53 +0200)]
re PR c/86093 (volatile ignored on pointer in C)

PR c/86093
* c-typeck.c (pointer_diff): Cast both pointers to unqualified types
before doing POINTER_DIFF_EXPR.

* c-c++-common/pr86093.c: New test.

From-SVN: r261663

6 years agore PR middle-end/85878 (ICE in convert_mode_scalar, at expr.c:287)
Jakub Jelinek [Fri, 15 Jun 2018 20:36:38 +0000 (22:36 +0200)]
re PR middle-end/85878 (ICE in convert_mode_scalar, at expr.c:287)

PR middle-end/85878
* expr.c (expand_assignment): Remove now redundant COMPLEX_MODE_P
check from first store_expr, use to_mode instead of GET_MODE (to_rtx).
Only call store_expr for halves if the mode is the same.

* gfortran.fortran-torture/compile/pr85878.f90: New test.

From-SVN: r261659

6 years agopt.c (tsubst_default_argument): Use push_to/pop_from_top_level.
Jason Merrill [Fri, 15 Jun 2018 20:23:00 +0000 (16:23 -0400)]
pt.c (tsubst_default_argument): Use push_to/pop_from_top_level.

* pt.c (tsubst_default_argument): Use push_to/pop_from_top_level.

* name-lookup.c (do_pushtag): Don't look through complete types, but
don't add to them either.  Get context from current_binding_level.

From-SVN: r261656

6 years ago* decl.c (start_enum): Do compare dependent underlying type.
Jason Merrill [Fri, 15 Jun 2018 20:22:55 +0000 (16:22 -0400)]
* decl.c (start_enum): Do compare dependent underlying type.

From-SVN: r261655

6 years agoPR c++/82882 - ICE with lambda in template default argument.
Jason Merrill [Fri, 15 Jun 2018 20:22:44 +0000 (16:22 -0400)]
PR c++/82882 - ICE with lambda in template default argument.

* lambda.c (record_null_lambda_scope): New.
* pt.c (tsubst_lambda_expr): Use it.
* name-lookup.c (do_pushtag): Don't give a lambda DECL_CONTEXT of a
function that isn't open.

From-SVN: r261654

6 years ago* tree.c (maybe_warn_parm_abi): Inform the location of the class.
Jason Merrill [Fri, 15 Jun 2018 20:22:38 +0000 (16:22 -0400)]
* tree.c (maybe_warn_parm_abi): Inform the location of the class.

From-SVN: r261653

6 years agore PR middle-end/86123 (ICE in prepare_cmp_insn, at optabs.c:3967)
Jakub Jelinek [Fri, 15 Jun 2018 19:30:58 +0000 (21:30 +0200)]
re PR middle-end/86123 (ICE in prepare_cmp_insn, at optabs.c:3967)

PR middle-end/86123
* match.pd ((X / Y) == 0 -> X < Y): Don't transform complex divisions.
Fix up comment formatting.

* gcc.c-torture/compile/pr86123.c: New test.

From-SVN: r261647

6 years agotyped-splay-tree.h (typed_splay_tree::remove): New function.
Bernd Edlinger [Fri, 15 Jun 2018 19:17:19 +0000 (19:17 +0000)]
typed-splay-tree.h (typed_splay_tree::remove): New function.

2018-06-15  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * typed-splay-tree.h (typed_splay_tree::remove): New function.
        (typed_splay_tree::closure,
        typed_splay_tree::inner_foreach_fn, typed_splay_tree::m_inner): Deleted.
        (typed_splay_tree::typed_splay_tree,
        typed_splay_tree::operator =): Declared private.
        (typed_splay_tree::splay_tree_key, typed_splay_tree::splay_tree_value,
        typed_splay_tree::splay_tree_node_s, typed_splay_tree::KDEL,
        typed_splay_tree::VDEL, typed_splay_tree::splay_tree_delete_helper,
        typed_splay_tree::rotate_left, typed_splay_tree::rotate_right,
        typed_splay_tree::splay_tree_splay,
        typed_splay_tree::splay_tree_foreach_helper,
        typed_splay_tree::splay_tree_insert,
        typed_splay_tree::splay_tree_remove,
        typed_splay_tree::splay_tree_lookup,
        typed_splay_tree::splay_tree_predecessor,
        typed_splay_tree::splay_tree_successor,
        typed_splay_tree::splay_tree_min,
        typed_splay_tree::splay_tree_max): Took over from splay-tree.c/.h.
        (typed_splay_tree::root, typed_splay_tree::comp,
        typed_splay_tree::delete_key,
        typed_splay_tree::delete_value): New data members.
        * typed-splay-tree.c (selftest::test_str_to_int): Add a test for
        typed_splay_tree::remove.

From-SVN: r261645

6 years ago[testsuite] Run dg-final.exp sequentially
Tom de Vries [Fri, 15 Jun 2018 18:51:07 +0000 (18:51 +0000)]
[testsuite] Run dg-final.exp sequentially

2018-06-15  Tom de Vries  <tdevries@suse.de>

* gcc.dg-selftests/dg-final.exp: Force sequential execution.

From-SVN: r261643

6 years agoPR libstdc++/86169 unshare COW string when non-const data() called
Jonathan Wakely [Fri, 15 Jun 2018 18:47:29 +0000 (19:47 +0100)]
PR libstdc++/86169 unshare COW string when non-const data() called

PR libstdc++/86169
* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
(basic_string::data()): Unshare string.
* testsuite/21_strings/basic_string/operations/data/char/86169.cc:
New.

From-SVN: r261642

6 years agoDecorate string_view members with nonnull attribute
Jonathan Wakely [Fri, 15 Jun 2018 16:47:55 +0000 (17:47 +0100)]
Decorate string_view members with nonnull attribute

The C++ committee has confirmed that passing a null pointer to the
unary basic_string_view constructor is undefined. This removes the check
from our implementation, and adds the nonnull attribute to warn when the
compiler can detect undefined input.

* include/std/string_view (basic_string_view(const CharT*)): Remove
check for null pointer and add nonnull attribute.
(compare(const CharT*), compare(size_type, size_type, const CharT*))
(find(const CharT*, size_type), rfind(const CharT*, size_type))
(find_first_of(const CharT*, size_type))
(find_last_of(const CharT*, size_type))
(find_first_not_of(const CharT*, size_type))
(find_last_not_of(const CharT*, size_type)): Add nonnull attribute.
* testsuite/21_strings/basic_string_view/cons/char/nonnull.cc: New.
* testsuite/21_strings/basic_string_view/operations/compare/char/
nonnull.cc: New.
* testsuite/21_strings/basic_string_view/operations/find/char/
nonnull.cc: New.
* testsuite/21_strings/basic_string_view/operations/rfind/char/
nonnull.cc: New.

From-SVN: r261638

6 years agoPR libstdc++/86168 fix ambiguous default constructor
Jonathan Wakely [Fri, 15 Jun 2018 16:11:12 +0000 (17:11 +0100)]
PR libstdc++/86168 fix ambiguous default constructor

PR libstdc++/86168
* include/bits/random.h (random_device(const string&)): Remove
default argument.

From-SVN: r261636

6 years agoMIPS: Add support for -mcrc and -mginv options.
Matthew Fortune [Fri, 15 Jun 2018 15:50:25 +0000 (15:50 +0000)]
MIPS: Add support for -mcrc and -mginv options.

gcc/ChangeLog:

2018-06-15  Matthew Fortune  <matthew.fortune@mips.com>

* config/mips/mips.h (ASM_SPEC): Pass through -mcrc, -mno-crc,
-mginv and -mno-ginv to the assembler.
* config/mips/mips.opt (-mcrc): New option.
(-mginv): Likewise.
* doc/invoke.text (-mcrc): Document.
(-mginv): Likewise.

From-SVN: r261635

6 years agoOnly define __cpp_lib_constexpr_char_traits for C++17
Jonathan Wakely [Fri, 15 Jun 2018 15:47:56 +0000 (16:47 +0100)]
Only define __cpp_lib_constexpr_char_traits for C++17

* include/bits/char_traits.h (__cpp_lib_constexpr_char_traits): Only
define for C++17 and above.

From-SVN: r261634

6 years agoForce user provided warning and error messages to only occupy one line.
Nick Clifton [Fri, 15 Jun 2018 15:25:16 +0000 (15:25 +0000)]
Force user provided warning and error messages to only occupy one line.

  PR 84195
gcc:  * tree.c (escaped_string): New class.  Converts an unescaped
  string into its escaped equivalent.
  (warn_deprecated_use): Use the new class to convert the
  deprecation message, if present.
  (test_escaped_strings): New self test.
  (test_c_tests): Add test_escaped_strings.
  * doc/extend.texi (deprecated): Add a note that the
  deprecation message is affected by the -fmessage-length
  option, and that control characters will be escaped.
  (#pragma GCC error): Document this pragma.
  (#pragma GCC warning): Likewise.
  * doc/invoke.texi (-fmessage-length): Document this option's
  effect on the #warning and #error preprocessor directives and
  the deprecated attribute.

testsuite;
  * gcc.c-torture/compile/pr84195.c: New test.

From-SVN: r261633

6 years agoLWG 2993 reference_wrapper<T> conversion from T&&
Jonathan Wakely [Fri, 15 Jun 2018 14:19:47 +0000 (15:19 +0100)]
LWG 2993 reference_wrapper<T> conversion from T&&

* doc/xml/manual/intro.xml: Document LWG 2993 change.
* include/bits/refwrap.h (reference_wrapper(_Tp&)): Remove.
(reference_wrapper(_Tp&&)): Remove.
(reference_wrapper<_Up>(_Up&&)): Define new constructor as constrained
template.
(reference_wrapper): Add deduction guide.
* testsuite/20_util/reference_wrapper/deduction.cc: New.
* testsuite/20_util/reference_wrapper/lwg2993.cc: New.

From-SVN: r261632

6 years agotree-vect-slp.c (vect_slp_bb): Dump MSG_OPTIMIZED_LOCATIONS here, also noting vector...
Richard Biener [Fri, 15 Jun 2018 12:41:46 +0000 (12:41 +0000)]
tree-vect-slp.c (vect_slp_bb): Dump MSG_OPTIMIZED_LOCATIONS here, also noting vector size used.

2018-06-15  Richard Biener  <rguenther@suse.de>

* tree-vect-slp.c (vect_slp_bb): Dump MSG_OPTIMIZED_LOCATIONS
here, also noting vector size used.
* tree-vectorizer.c (vectorize_loops): Adjust.  Note vector
size used in MSG_OPTIMIZED_LOCATIONS dump.
(pass_slp_vectorize::execute): Adjust.

From-SVN: r261626

6 years ago[ARC] Fix warning in arc_return_address_register.
Claudiu Zissulescu [Fri, 15 Jun 2018 11:22:10 +0000 (13:22 +0200)]
[ARC] Fix warning in arc_return_address_register.

The if condition in arc_return_address_register which selects the arc
return address is not correct. The issue is signalized in bugzilla 85968.

gcc/
2018-06-15  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc.c (arc_return_address_register): Fix if-condition.

From-SVN: r261623

6 years agore PR tree-optimization/86159 (g++ ICE at -O1 and above on valid code: incorrect...
Richard Biener [Fri, 15 Jun 2018 11:08:30 +0000 (11:08 +0000)]
re PR tree-optimization/86159 (g++ ICE at -O1 and above on valid code: incorrect type of vector CONSTRUCTOR elements)

2018-06-15  Richard Biener  <rguenther@suse.de>

PR middle-end/86159
* tree-cfg.c (gimplify_build3): Do not strip sign conversions,
leave useless conversion stripping to force_gimple_operand_gsi.
(gimplify_build2): Likewise.
(gimplify_build1): Likewise.

* g++.dg/pr86159.C: New testcase.

From-SVN: r261622

6 years agore PR tree-optimization/86076 (ICE: verify_gimple failed (error: location references...
Richard Biener [Fri, 15 Jun 2018 07:25:13 +0000 (07:25 +0000)]
re PR tree-optimization/86076 (ICE: verify_gimple failed (error: location references block not in block tree))

2018-06-15  Richard Biener  <rguenther@suse.de>

PR middle-end/86076
* tree-cfg.c (move_stmt_op): unshare invariant addresses
before adjusting their block.

* gcc.dg/pr86076.c: New testcase.

From-SVN: r261620

6 years agoRISC-V: Add custom RTEMS multilibs
Sebastian Huber [Fri, 15 Jun 2018 05:19:44 +0000 (05:19 +0000)]
RISC-V: Add custom RTEMS multilibs

Add multilib variants for -march=rv64imafd, e.g. to support the BOOMv2 core.

Add -mcmodel=medany as a variant of the 64-bit multilibs for RTEMS.  The
rationale for this change is that several existing RISC-V chips map the
RAM at 0x80000000.  In RTEMS, we do not use virtual memory, so
applications will run at this location which is outside the +-2GiB range
in a 64-bit configuration.

gcc/
* config.gcc (riscv*-*-elf* | riscv*-*-rtems*): Use custom
multilibs for *-*-rtems*.
* config/riscv/t-rtems: New file.

From-SVN: r261619

6 years agoLWG 3039 Unnecessary decay in thread and packaged_task
Jonathan Wakely [Fri, 15 Jun 2018 00:19:07 +0000 (01:19 +0100)]
LWG 3039 Unnecessary decay in thread and packaged_task

* include/std/future (__constrain_pkgdtask): Replace with ...
(packaged_task::__not_same): New alias template, using
__remove_cvref_t instead of decay.
* include/std/thread (thread::__not_same): Add comment.

From-SVN: r261618

6 years agoDaily bump.
GCC Administrator [Fri, 15 Jun 2018 00:16:45 +0000 (00:16 +0000)]
Daily bump.

From-SVN: r261617

6 years agore PR c++/86063 (g++ ICE at tree check: expected tree_list, have expr_pack_expansion...
Marek Polacek [Thu, 14 Jun 2018 21:07:14 +0000 (21:07 +0000)]
re PR c++/86063 (g++ ICE at  tree check: expected tree_list, have expr_pack_expansion in cp_check_const_attributes, at cp/decl2.c:1391)

PR c++/86063
* decl2.c (cp_check_const_attributes): Skip trees that are not
TREE_LISTs.

* g++.dg/cpp0x/gen-attrs-65.C: New test.

From-SVN: r261613

6 years agoLWG 3075 basic_string needs deduction guides from basic_string_view
Jonathan Wakely [Thu, 14 Jun 2018 20:27:04 +0000 (21:27 +0100)]
LWG 3075 basic_string needs deduction guides from basic_string_view

* testsuite/21_strings/basic_string/cons/char/deduction.cc: Test
deduction from string views.
* testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
Likewise.

From-SVN: r261612

6 years agoLWG 3074 make scalar types non-deduced in valarray non-member functions
Jonathan Wakely [Thu, 14 Jun 2018 19:36:54 +0000 (20:36 +0100)]
LWG 3074 make scalar types non-deduced in valarray non-member functions

* include/bits/valarray_after.h (_DEFINE_EXPR_BINARY_FUNCTION): Change
scalar parameters to be a non-deduced context.
* include/std/valarray (_DEFINE_BINARY_OPERATOR): Likewise. Adjust
whitespace.
* testsuite/26_numerics/valarray/operators.cc: Test scalar operands.
* testsuite/26_numerics/valarray/transcend.cc: New.

From-SVN: r261610

6 years agore PR target/86048 (.seh_savexmm offset is negative error when compiling libpng)
Jakub Jelinek [Thu, 14 Jun 2018 19:16:14 +0000 (21:16 +0200)]
re PR target/86048 (.seh_savexmm offset is negative error when compiling libpng)

PR target/86048
* gcc.target/i386/pr86048.c: Require sse2 effective target.  Add
-msse2 to dg-options.

From-SVN: r261608

6 years agore PR middle-end/86122 (ICE in useless_type_conversion_p, at gimple-expr.c:87)
Jakub Jelinek [Thu, 14 Jun 2018 19:07:45 +0000 (21:07 +0200)]
re PR middle-end/86122 (ICE in useless_type_conversion_p, at gimple-expr.c:87)

PR middle-end/86122
* match.pd ((A +- CST1) +- CST2): Punt if last resort
unsigned_type_for returns NULL.

* gcc.c-torture/compile/pr86122.c: New test.

From-SVN: r261606

6 years agoP0624R2 - Default constructible and assignable stateless lambdas
Jakub Jelinek [Thu, 14 Jun 2018 19:05:13 +0000 (21:05 +0200)]
P0624R2 - Default constructible and assignable stateless lambdas

P0624R2 - Default constructible and assignable stateless lambdas
* method.c (synthesized_method_walk): For C++2a don't mark
sfk_constructor or sfk_copy_assignment as deleted if lambda has
no lambda-captures.

* g++.dg/cpp2a/lambda1.C: New test.
* g++.dg/cpp0x/lambda/lambda-ice2.C: Adjust expected diagnostics
for -std=c++2a.

From-SVN: r261605

6 years agoPartially revert move of std::tuple_element_t to <tuple>
Jonathan Wakely [Thu, 14 Jun 2018 19:02:40 +0000 (20:02 +0100)]
Partially revert move of std::tuple_element_t to <tuple>

Defining std::tuple_element_t in <utility> makes it available wherever
std::tuple_element is available.

* include/std/tuple (__cpp_lib_tuple_element_t, tuple_element_t):
Move back to <utility>.
* include/std/utility (__cpp_lib_tuple_element_t. tuple_element_t):
Restore to here.

From-SVN: r261604

6 years agodecl.c (duplicate_decls): Use DECL_SOURCE_LOCATION in OPT_Wshadow warning_at.
Paolo Carlini [Thu, 14 Jun 2018 17:49:21 +0000 (17:49 +0000)]
decl.c (duplicate_decls): Use DECL_SOURCE_LOCATION in OPT_Wshadow warning_at.

/cp
2018-06-14  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (duplicate_decls): Use DECL_SOURCE_LOCATION in
OPT_Wshadow warning_at.
(grokfndecl): Consistently use the location_t argument in
literal operator diagnostic messages.
(grokdeclarator): Use declspecs->locations[ds_storage_class]
in error_at call.
* decl2.c (finish_static_data_member_decl): Use DECL_SOURCE_LOCATION
in permerror call.

/testsuite
2018-06-14  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/other/static3.C: New.
* g++.dg/other/static4.C: Likewise.
* g++.dg/warn/Wshadow-15.C: Likewise.
* g++.dg/cpp0x/gnu_fext-numeric-literals.C: Test locations too.
* g++.dg/cpp0x/std_fext-numeric-literals.C: Likewise.
* g++.dg/cpp0x/std_fno-ext-numeric-literals.C: Likewise.
* g++.dg/cpp0x/udlit-args-neg.C: Likewise.
* g++.dg/cpp0x/udlit-clink-neg.C: Likewise.
* g++.dg/cpp0x/udlit-extern-c.C: Likewise.
* g++.dg/cpp0x/udlit-member-neg.C: Likewise.

From-SVN: r261601

6 years agoP0935R0 Eradicating unnecessarily explicit default constructors
Jonathan Wakely [Thu, 14 Jun 2018 14:12:24 +0000 (15:12 +0100)]
P0935R0 Eradicating unnecessarily explicit default constructors

More pieces of P0935R0, making default constructors non-explicit.

* include/backward/strstream (strstreambuf): Add non-explicit default
constructor.
* include/bits/locale_conv.h (wbuffer_convert, wstring_convert):
Likewise.
* include/bits/regex.h (match_results): Likewise.
* testsuite/22_locale/conversions/buffer/1.cc: Test for non-explicit
default constructor.
* testsuite/22_locale/conversions/string/1.cc: Likewise.
* testsuite/28_regex/match_results/ctors/char/default.cc: Likewise.
* testsuite/28_regex/match_results/ctors/wchar_t/default.cc: Likewise.

From-SVN: r261597

6 years agoDefine __cpp_lib_tuple_element_t in <tuple> not <utility>
Jonathan Wakely [Thu, 14 Jun 2018 14:01:29 +0000 (15:01 +0100)]
Define __cpp_lib_tuple_element_t in <tuple> not <utility>

* include/std/tuple (__cpp_lib_tuple_element_t): Move feature test
macro from <utility> and change type to long.
* include/std/utility (__cpp_lib_tuple_element_t): Remove.
* testsuite/20_util/tuple/tuple_element_t.cc: Check for feature test
macro.

From-SVN: r261596

6 years agore PR target/85945 (ICE in resolve_subreg_use, at lower-subreg.c:751)
Jakub Jelinek [Thu, 14 Jun 2018 13:35:06 +0000 (15:35 +0200)]
re PR target/85945 (ICE in resolve_subreg_use, at lower-subreg.c:751)

PR target/85945
* lower-subreg.c (find_decomposable_subregs): Don't decompose float
subregs of multi-word pseudos unless the float mode has word size.

* gcc.c-torture/compile/pr85945.c: New test.

From-SVN: r261593

6 years agoP0935R0 Eradicating unnecessarily explicit default constructors
Jonathan Wakely [Thu, 14 Jun 2018 13:32:53 +0000 (14:32 +0100)]
P0935R0 Eradicating unnecessarily explicit default constructors

The param_type constructors of each random number distribution should
mirror the constructors of the distribution itself, so make the same
changes w.r.t explicit on default constructors.

* include/bits/random.h (uniform_real_distribution::param_type)
(normal_distribution::param_type, lognormal_distribution::param_type)
(gamma_distribution::param_type, chi_squared_distribution::param_type)
(cauchy_distribution::param_type, fisher_f_distribution::param_type)
(student_t_distribution::param_type)
(bernoulli_distribution::param_type)
(binomial_distribution::param_type)
(geometric_distribution::param_type)
(negative_binomial_distribution::param_type)
(poisson_distribution::param_type)
(exponential_distribution::param_type)
(weibull_distribution::param_type)
(extreme_value_distribution::param_type): Add non-explicit default
constructors. Remove default argument for first parameter of explicit
constructors.
* include/bits/uniform_int_dist.h
(uniform_int_distribution::param_type): Likewise.
* include/ext/random
(beta_distribution::param_type, rice_distribution::param_type)
(nakagami_distribution::param_type, pareto_distribution::param_type)
(k_distribution::param_type, arcsine_distribution::param_type)
(hoyt_distribution::param_type, triangular_distribution::param_type)
(von_mises_distribution::param_type)
(hypergeometric_distribution::param_type)
(logistic_distribution::param_type)
(uniform_inside_sphere_distribution::param_type): Likewise.
(uniform_on_sphere_distribution::param_type): Make default constructor
non-explicit.
* testsuite/26_numerics/random/bernoulli_distribution/cons/default.cc:
Test param_type for non-explicit default constructor.
* testsuite/26_numerics/random/binomial_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/cauchy_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/chi_squared_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/discrete_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/exponential_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/extreme_value_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/fisher_f_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/gamma_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/geometric_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/lognormal_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/negative_binomial_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/normal_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/piecewise_constant_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/piecewise_linear_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/poisson_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/student_t_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/uniform_int_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/uniform_real_distribution/cons/default.cc:
Likewise.
* testsuite/26_numerics/random/weibull_distribution/cons/default.cc:
Likewise.
* testsuite/ext/random/arcsine_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/beta_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/hoyt_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/hypergeometric_distribution/cons/default.cc:
Likewise.
* testsuite/ext/random/k_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/logistic_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/nakagami_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/normal_mv_distribution/cons/default.cc:
Likewise.
* testsuite/ext/random/pareto_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/rice_distribution/cons/default.cc: Likewise.
* testsuite/ext/random/triangular_distribution/cons/default.cc:
Likewise.
* testsuite/ext/random/uniform_inside_sphere_distribution/cons/default.cc:
Likewise.
* testsuite/ext/random/uniform_on_sphere_distribution/cons/default.cc:
Likewise.
* testsuite/ext/random/von_mises_distribution/cons/default.cc:
Likewise.

From-SVN: r261592

6 years agoFix errors in libstdc++-v3/ChangeLog entries.
Jonathan Wakely [Thu, 14 Jun 2018 10:59:14 +0000 (11:59 +0100)]
Fix errors in libstdc++-v3/ChangeLog entries.

From-SVN: r261589

6 years agore PR target/86139 (ICE in in store_constructor, at expr.c:6849 on arm-linux-gnueabihf)
Richard Biener [Thu, 14 Jun 2018 10:55:31 +0000 (10:55 +0000)]
re PR target/86139 (ICE in in store_constructor, at expr.c:6849 on arm-linux-gnueabihf)

2018-06-14  Richard Biener  <rguenther@suse.de>

PR middle-end/86139
* tree-vect-generic.c (build_word_mode_vector_type): Remove
duplicate and harmful type_hash_canon.
* tree.c (type_hash_canon): Assert we didn't find ourselves.

From-SVN: r261588

6 years agore PR ipa/86124 (ICE in create_variable_info_for, at tree-ssa-structalias.c:6123)
Richard Biener [Thu, 14 Jun 2018 10:55:00 +0000 (10:55 +0000)]
re PR ipa/86124 (ICE in create_variable_info_for, at tree-ssa-structalias.c:6123)

2018-06-14  Richard Biener  <rguenther@suse.de>

PR ipa/86124
* tree-ssa-struct-alias.c (create_variable_info_for): Handle
NULL cgraph_node.

* gcc.dg/pr86124.c: New testcase.

From-SVN: r261587

6 years agoPR libstdc++/83982 fix exception-safety guarantee of std::vector::resize
Daniel Trebbien [Thu, 14 Jun 2018 09:26:51 +0000 (09:26 +0000)]
PR libstdc++/83982 fix exception-safety guarantee of std::vector::resize

Construct new elements before moving existing ones, so that if a default
constructor throws, the existing elements are not left in a moved-from
state.

2018-06-14  Daniel Trebbien <dtrebbien@gmail.com>
    Jonathan Wakely  <jwakely@redhat.com>

PR libstdc++/83982
* include/bits/vector.tcc (vector::_M_default_append(size_type)):
Default-construct new elements before moving existing ones.
* testsuite/23_containers/vector/capacity/resize/strong_guarantee.cc:
New.

Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>
From-SVN: r261585