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gcc-changelog: sync from master.

contrib/ChangeLog:

* gcc-changelog/git_check_commit.py: New file.
* gcc-changelog/git_commit.py: New file.
* gcc-changelog/git_email.py: New file.
* gcc-changelog/git_repository.py: New file.
* gcc-changelog/git_update_version.py: New file.
* gcc-changelog/test_email.py: New file.
* gcc-changelog/test_patches.txt: New file.

Daily bump.

libstdc++: Remove noexcept from match_results comparisons (PR 94627)

These functions can't be noexcept because the iterators stored in the
sub_match objects can throw on any operation.

libstdc++-v3/ChangeLog:

PR libstdc++/94627
* include/bits/regex.h (operator==, operator!=): Remove noexcept
equality comparisons for match_results.
* testsuite/28_regex/match_results/94627.cc: New test.

(cherry picked from commit a1a0dc4548979f8a340a7ea71624a52a20e1e0b3)

PR fortran/71706 - ICE on using sync images with -fcheck=bounds

The run-time checking code did not properly convert the kind of the
argument to SYNC IMAGES, leading to an error in verify_gimple. Fix that.

gcc/fortran/
PR fortran/71706
* trans-stmt.c (gfc_trans_sync): Do proper kind conversion in
bounds-checking code.

(cherry picked from commit e6cc67f6616c96f3e18a434e0c74ba2f3818cb6d)

PR fortran/95880 - ICE in gfc_add_type, at fortran/symbol.c:2030

The fix for PR39695 did not properly distinguish between procedure names
and other symbols names in errors emitted for invalid code. Fix that.

gcc/fortran/
PR fortran/95880
* symbol.c (gfc_add_type): If sym->ns->proc_name is set, use it,
otherwise fall back to sym->name.

(cherry picked from commit f3a8f66a83f8c94f6fbb0233cefba8032f2e4876)

Fortran : Bogus error with additional blanks in type(*) PR95829

Checking for "* ) " instead of "*)" clears the bogus error.

2020-07-01 Steven G. Kargl <kargl@gcc.gnu.org>

gcc/fortran/

PR fortran/95829
* decl.c (gfc_match_decl_type_spec): Compare with "* ) " instead
of "*)".

2020-07-01 Mark Eggleston <markeggleston@gcc.gnu.org>

gcc/testsuite/

PR fortran/95829
* gfortran.dg/pr95829.f90: New test.

(cherry picked from commit 624e60f080989fa57756575a0bb47a97748b52b8)

Daily bump.

arm: Don't generate invalid LDRD insns

This fixes a bug in the arm backend where GCC generates invalid LDRD
instructions. The LDRD instruction requires the first transfer register to be
even, but GCC attempts to use odd registers here. For example, with the
following C code:

struct c {
double a;
} __attribute((aligned)) __attribute((packed));
struct c d;
struct c f(struct c);
void e() { f(d); }

The struct d is passed in registers r1 and r2 to the function f, and GCC
attempted to do this with a LDRD instruction when compiling with -march=armv7-a
on a soft float toolchain.

The fix is analogous to the corresponding one for STRD in the same function:
https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=52057dc4ac5295caebf83147f688d769c93cbc8d

gcc/:
* config/arm/arm.c (output_move_double): Fix codegen when loading into
a register pair with an odd base register.

gcc/testsuite/:
* gcc.c-torture/compile/packed-aligned-1.c: New test.
* gcc.c-torture/execute/packed-aligned.c: New test.

(cherry picked from commit 8b8f3117263ca79b3febadadb07732588d99d5f6)

Do not generate recursion check for compiler-generated procedures.

This one-line fix removes a check for recursion for procedures
which are compiler-generated, such as finalizers or deallocation.
These need to be recursive, even if the user code should not be.

gcc/fortran/ChangeLog:

PR fortran/95743
* trans-decl.c (gfc_generate_function_code): Do not generate
recursion check for compiler-generated procedures.

(cherry picked from commit 95cdcf701dad826f225d6413b59650f181954399)

Daily bump.

Daily bump.

Daily bump.

PR fortran/95881 - ICE in resolve_symbol, at fortran/resolve.c:15175

Avoid NULL pointer dereference.

gcc/fortran/
PR fortran/95881
* resolve.c (resolve_symbol): Avoid NULL pointer dereference.

(cherry picked from commit 3cbc0fb39c84ae0a51a9a88649dccd105bf17d6e)

Daily bump.

d: Fix ICE during error recovery in semantic pass

Fixes a regression caused by an incomplete backport of converting the
Expression semantic pass to a Visitor.

gcc/d/ChangeLog:

PR d/95250
* dmd/expressionsem.c (class ExpressionSemanticVisitor): Return early
if error occurred during semantic of DivExp.

gcc/testsuite/ChangeLog:

PR d/95250
* gdc.dg/pr95250.d: New test.

(cherry picked from commit 1d19c9cd3dd99ba8885c0fc93223918399f73939)

d: Fix ICE in uda_attribute_p when looking up unknown attribute

The target attribute table is not guaranteed to be set in all backends.

gcc/d/ChangeLog:

PR d/95173
* d-attribs.cc (uda_attribute_p): Don't search target attribute table
if NULL.

gcc/testsuite/ChangeLog:

PR d/95173
* gdc.dg/pr95173.d: New test.

(cherry picked from commit 62e02c8729a75c4a859edc18e0bcafb87d717f46)

Daily bump.

x96: Remove PTA_CLWB from PTA_ICELAKE_CLIENT

CLWB isn't supported on Ice Lake client. But Ice Lake server support it.
Move PTA_CLWB to PTA_ICELAKE_SERVER.

PR target/95874
* config/i386/i386.h (PTA_ICELAKE_CLIENT): Remove PTA_CLWB.
(PTA_ICELAKE_SERVER): Add PTA_CLWB.

(cherry picked from commit c422e5f81f42a0fc197f0715f4fcd81f1be90bff)

Daily bump.

Revert "PR fortran/95689 - ICE in check_sym_interfaces, at fortran/interface.c:2015"

With submodules, name mangling of interfaces may result in long internal
symbols overflowing an internal buffer. We now check that we do not
exceed the enlarged buffer size.

gcc/fortran/
PR fortran/95689
* interface.c (check_sym_interfaces): Enlarge temporary buffer,
and add check on length on mangled name to prevent overflow.

gcc/testsuite/
PR fortran/95689
* gfortran.dg/pr95689.f90: New test.

(reverts the cherry-pick from commit 62c0c0ea7bfb6f8f6b8d767b05120cafb6823da6)

libstdc++: Fix std::from_chars to ignore leading zeros in base 2

The parser for binary numbers returned an error if the entire string
contains more digits than the result type. Leading zeros should be
ignored.

libstdc++-v3/ChangeLog:

* include/std/charconv (__from_chars_binary): Ignore leading zeros.
* testsuite/20_util/from_chars/1.cc: Check "0x1" for all bases,
not just 10 and 16.
* testsuite/20_util/from_chars/3.cc: New test.

(cherry picked from commit eb0ff770e29715deb8b2e6f5da736e0c1e8f8d07)

Daily bump.

PR fortran/95689 - ICE in check_sym_interfaces, at fortran/interface.c:2015

With submodules, name mangling of interfaces may result in long internal
symbols overflowing an internal buffer. We now check that we do not
exceed the enlarged buffer size.

gcc/fortran/
PR fortran/95689
* interface.c (check_sym_interfaces): Enlarge temporary buffer,
and add check on length on mangled name to prevent overflow.

(cherry picked from commit 62c0c0ea7bfb6f8f6b8d767b05120cafb6823da6)

PR fortran/95587 - ICE in gfc_target_encode_expr, at fortran/target-memory.c:362

EQUIVALENCE objects are subject to constraints listed in the Fortran 2018
standard, section 8.10.1.1. These constraints are to be checked
also for CLASS variables.

gcc/fortran/
PR fortran/95587
* match.c (gfc_match_equivalence): Check constraints on
EQUIVALENCE objects also for CLASS variables.

(cherry picked from commit 5eb947601bdce59f2ff26694327ad173c51c2724)

Fix memory corruption with vector and variant record

The problem is that Has_Constrained_Partial_View must be tested on the
base type of the designated type of an allocator.

gcc/ada/ChangeLog:
* gcc-interface/trans.c (gnat_to_gnu) <N_Allocator>: Minor tweaks.
Call Has_Constrained_Partial_View on base type of designated type.

Fortran : ICE in resolve_fl_procedure PR95708

Now issues an error "Intrinsic procedure 'num_images' not
allowed in PROCEDURE" instead of an ICE.

2020-06-22 Steven G. Kargl <kargl@gcc.gnu.org>

gcc/fortran/

PR fortran/95708
* intrinsic.c (add_functions): Replace CLASS_INQUIRY with
CLASS_TRANSFORMATIONAL for intrinsic num_images.
(make_generic): Replace ACTUAL_NO with ACTUAL_YES for
intrinsic team_number.
* resolve.c (resolve_fl_procedure): Check pointer ts.u.derived
exists before using it.

2020-06-22 Mark Eggleston <markeggleston@gcc.gnu.org>

gcc/testsuite/

PR fortran/95708
* gfortran.dg/pr95708.f90: New test.

(cherry picked from commit 647340c92a042e8e6f7d004637f07060dbde49c0)

Daily bump.

Daily bump.

Daily bump.

Daily bump.