Remove duplicated logic in experimental::pmr::polymorphic_allocator by
calling the __uses_allocator_construct helper.

Fix bugs in std::pmr::polymorphic_allocator with incorrect SFINAE
constraint and incorrect argument order.

	* include/bits/uses_allocator.h (__uses_allocator_construct): Qualify
	calls to __uses_allocator_construct_impl and __use_alloc.
	* include/experimental/memory_resource
	(polymorphic_allocator::_M_construct): Remove.
	(polymorphic_allocator::construct): Call __uses_allocator_construct.
	Qualify calls to __use_alloc.
	* include/std/memory_resource (polymorphic_allocator::construct): Fix
	type in SFINAE constraint. Use constexpr if instead of tag dispatching
	to _S_construct overloads.
	(polymorphic_allocator::construct(pair<T1, T2>*, ...)): Fix order of
	arguments to _S_construct_p.
	(polymorphic_allocator::_S_construct): Remove.
	(polymorphic_allocator::_S_construct_p): Return allocators by value
	not by reference.
	* include/std/scoped_allocator (scoped_allocator_adaptor::construct):
	Qualify calls to __use_alloc.
	* testsuite/20_util/polymorphic_allocator/construct_pair.cc: New test,
	copied from testsuite/20_util/scoped_allocator/construct_pair.cc.
	* testsuite/experimental/polymorphic_allocator/1.cc: New test.
	* testsuite/experimental/polymorphic_allocator/construct_pair.cc:
	New test.

From-SVN: r263566

This patch adds the ability to label source ranges within a rich_location,
to be printed by diagnostic_show_locus.

For example:

pr69554-1.c:11:18: error: invalid operands to binary + (have 'const char *' and 'const char *')
11 |   return (p + 1) + (q + 1);
   |          ~~~~~~~ ^ ~~~~~~~
   |             |         |
   |             |         const char *
   |             const char *

The patch implements labels for various type mismatch errors in the C and
C++ frontends, and in -Wformat.  I implemented it wherever accurate location
information was guaranteed (there are other places that could benefit, but
we need better location information in those places).

The labels can be disabled via -fno-diagnostics-show-labels.

Similarly:

param-type-mismatch.C: In function 'int test_1(int, int, float)':
param-type-mismatch.C:11:27: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
11 |   return callee_1 (first, second, third);
   |                           ^~~~~~
   |                           |
   |                           int
param-type-mismatch.C:7:43: note:   initializing argument 2 of 'int callee_1(int, const char*, float)'
7 | extern int callee_1 (int one, const char *two, float three);
  |                               ~~~~~~~~~~~~^~~

where the first "error" describing the bad argument gets a label
describing the type inline (since it's non-obvious from "second").
The "note" describing the type of the param of the callee *doesn't*
get a label, since that information is explicit there in the
source ("const char *two").

The idea is that in any diagnostic where two aspects of the source aren't
in sync it ought to be easier for the user if we directly show them the
mismatching aspects inline (e.g. types).

As well as type mismatch errors, perhaps labels could also be used for
buffer overflow warnings, for describing the capacity of the destination
buffer vs the size of what's being written:

  sprintf (buf, "filename: %s\n", file);
           ^~~   ~~~~~~~~~~~^~~
           |                |
           capacity: 32     10 + strlen(file) + 2

or somesuch.  Another idea might be for macro expansion warnings:

warning: repeated side effects in macro expansion...
   x = MIN (p++, q++);
       ~~~~^~~~~~~~~~
note: ...expanded here as
 #define MIN(X,Y) (X<Y?X:Y)
         ^~~ ~ ~   ~ ~ ~ ~
             | |   | | | |
             | |   | | | q++
             | |   | | p++
             | |   | q++
             | q++ p++
             p++

The patch removes some logic from multiline.exp which special-cased
lines ending with a '|' character (thus complicating testing of this
patch).  I believe that this was a vestige from experiments I did to
support strippng dg directives from the output; it was present in the
earliest version of multiline.exp I posted:
  "[RFC, stage1] Richer source location information for gcc 6 (location ranges etc)"
    https://gcc.gnu.org/ml/gcc-patches/2015-03/msg00837.html
and I believe was neved used.

gcc/c-family/ChangeLog:
	* c-format.c: Include "selftest-diagnostic.h" and
	"gcc-rich-location.h".
	(format_warning_at_char): Pass NULL for new label params of
	format_warning_va.
	(class indirection_suffix): New class.
	(class range_label_for_format_type_mismatch): New class.
	(format_type_warning): Move logic for generating "*" suffix to
	class indirection_suffix.  Create "fmt_label" and "param_label"
	to show their types, and pass them to the
	format_warning_at_substring calls.
	(selftest::test_type_mismatch_range_labels): New test.
	(selftest::c_format_c_tests): Call it.

gcc/c/ChangeLog:
	* c-objc-common.c: Include "gcc-rich-location.h".
	(c_tree_printer): Move implemenation of '%T' to...
	(print_type): ...this new function.
	(range_label_for_type_mismatch::get_text): New function.
	* c-typeck.c (convert_for_assignment): Add type labels to the rhs
	range for the various ic_argpass cases.
	(class maybe_range_label_for_tree_type_mismatch): New class.
	(build_binary_op): Use it when calling binary_op_error.

gcc/cp/ChangeLog:
	* call.c: Include "gcc-rich-location.h".
	(convert_like_real): Add range label for "invalid conversion"
	diagnostic.
	(perform_implicit_conversion_flags): Add type label to the
	"could not convert" error.
	* error.c: Include "gcc-rich-location.h".
	(range_label_for_type_mismatch::get_text): New function.
	* typeck.c (convert_for_assignment): Add type label to
	the "cannot convert" error if a location is available.

gcc/ChangeLog:
	* common.opt (fdiagnostics-show-labels): New option.
	* diagnostic-show-locus.c (class layout_range): Add field
	"m_label".
	(class layout): Add field "m_show_labels_p".
	(layout_range::layout_range): Add param "label" and use it to
	initialize m_label.
	(make_range): Pass in NULL for new "label" param of layout_range's
	ctor.
	(layout::layout): Initialize m_show_labels_p.
	(layout::maybe_add_location_range): Pass in loc_range->m_label
	when constructing layout_range instances.
	(struct line_label): New struct.
	(layout::print_any_labels): New member function.
	(layout::print_line): Call it if label-printing is enabled.
	(selftest::test_one_liner_labels): New test.
	(selftest::test_diagnostic_show_locus_one_liner): Call it.
	* diagnostic.c (diagnostic_initialize): Initialize
	context->show_labels_p.
	* diagnostic.h (struct diagnostic_context): Add field
	"show_labels_p".
	* doc/invoke.texi (Diagnostic Message Formatting Options): Add
	-fno-diagnostics-show-labels.
	* dwarf2out.c (gen_producer_string): Add
	OPT_fdiagnostics_show_labels to the ignored options.
	* gcc-rich-location.c (gcc_rich_location::add_expr): Add "label"
	param.
	(gcc_rich_location::maybe_add_expr): Likewise.
	* gcc-rich-location.h (gcc_rich_location::gcc_rich_location): Add
	label" param, defaulting to NULL.
	(gcc_rich_location::add_expr): Add "label" param.
	(gcc_rich_location::maybe_add_expr): Likewise.
	(class text_range_label): New class.
	(class range_label_for_type_mismatch): New class.
	* gimple-ssa-sprintf.c (fmtwarn): Pass NULL for new label params
	of format_warning_va.
	(fmtwarn_n): Likewise for new params of format_warning_n_va.
	* lto-wrapper.c (merge_and_complain): Add
	OPT_fdiagnostics_show_labels to the "pick one setting" options.
	(append_compiler_options): Likewise to the dropped options.
	(append_diag_options): Likewise to the passed-on options.
	* opts.c (common_handle_option): Handle the new option.
	* selftest-diagnostic.c
	(test_diagnostic_context::test_diagnostic_context): Enable
	show_labels_p.
	* substring-locations.c: Include "gcc-rich-location.h".
	(format_warning_n_va): Add "fmt_label" and "param_label" params
	and use them as appropriate.
	(format_warning_va): Add "fmt_label" and "param_label" params,
	passing them on to format_warning_n_va.
	(format_warning_at_substring): Likewise.
	(format_warning_at_substring_n): Likewise.
	* substring-locations.h (format_warning_va): Add "fmt_label" and
	"param_label" params.
	(format_warning_n_va): Likewise.
	(format_warning_at_substring): Likewise.
	(format_warning_at_substring_n): Likewise.
	* toplev.c (general_init): Initialize global_dc->show_labels_p.

gcc/testsuite/ChangeLog:
	* g++.dg/diagnostic/aka3.C: New test.
	* g++.dg/diagnostic/param-type-mismatch-2.C: Update expected
	output to show range labels.
	* g++.dg/diagnostic/param-type-mismatch.C: Likewise.
	* g++.dg/plugin/plugin.exp (plugin_test_list): Add...
	* g++.dg/plugin/show-template-tree-color-labels.C: New test.
	* gcc.dg/bad-binary-ops.c: Update expected output to show range
	labels.  Add an "aka" example.
	* gcc.dg/cpp/pr66415-1.c: Update expected output to show range
	labels.
	* gcc.dg/format/diagnostic-ranges.c: Likewise.
	* gcc.dg/format/pr72858.c: Likewise.
	* gcc.dg/format/pr78498.c: Likewise.
	* gcc.dg/param-type-mismatch.c: Add "-Wpointer-sign" to options.
	Update expected output to show range labels.  Add examples of
	-Wincompatible-pointer-types and -Wpointer-sign for parameters.
	* gcc.dg/plugin/diagnostic-test-show-locus-bw-line-numbers.c:
	Update expected output to show range labels.
	* gcc.dg/plugin/diagnostic-test-show-locus-bw.c: Likewise.
	(test_very_wide_line): Adjust so that label is at left-clipping
	boundary.
	(test_very_wide_line_2): New test.
	* gcc.dg/plugin/diagnostic-test-show-locus-color-line-numbers.c:
	Update expected output to show range labels.
	* gcc.dg/plugin/diagnostic-test-show-locus-color.c: Likewise.
	* gcc.dg/plugin/diagnostic-test-show-locus-no-labels.c: New test.
	* gcc.dg/plugin/diagnostic_plugin_show_trees.c (show_tree): Update
	for new param to gcc_rich_location::add_expr.
	* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c (add_range):
	Add "label" param.
	(test_show_locus): Add examples of labels to various tests.  Tweak
	the "very wide_line" test case and duplicate it, to cover the
	boundary values for clipping of labels against the left-margin.
	* gcc.dg/plugin/plugin.exp (plugin_test_list): Add
	diagnostic-test-show-locus-no-labels.c.
	* gcc.dg/pr69554-1.c: Update expected output to show range labels.
	Update line numbers of dg-locus directives.
	* gcc.dg/pr69627.c:  Update expected output to show range labels.
	* lib/multiline.exp (proc _build_multiline_regex): Remove
	special-case handling of lines with trailing '|'.

libcpp/ChangeLog:
	* include/line-map.h (struct location_range): Add "m_label" field.
	(class rich_location): Add description of labels to leading
	comment.
	(rich_location::rich_location): Add "label" param, defaulting to
	NULL.
	(rich_location::add_range): Likewise.
	(struct label_text): New struct.
	(class range_label): New abstract base class.
	* line-map.c (rich_location::rich_location): Add "label" param;
	use it.
	(rich_location::add_range): Likewise.

From-SVN: r263564

From-SVN: r263563

2018-08-15  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

c/
	* c-decl.c (start_decl): Do not warn if variables is named as main
	and is a local variable.

testsuite/
	* gcc.dg/wmain.c: New test.

From-SVN: r263562

PR tree-optimization/71625 - missing strlen optimization on different array
initialization style (avoid compilation errors on aarch64)

gcc/ChangeLog:
	* config/aarch64/aarch64-builtins.c
	(aarch64_init_simd_builtin_types): Clear Poly8_t's TYPE_STRING_FLAG.

From-SVN: r263561

Since there is no branch splitting anymore, the loop is no longer
necessary: pool chunkification can be done in one step.

gcc/ChangeLog:

2018-08-15  Ilya Leoshkevich  <iii@linux.ibm.com>

	* config/s390/s390.c (s390_reorg): Remove loop.

From-SVN: r263557

2018-08-15  Iain Sandoe <iain@sandoe.co.uk>

gcc/c:

        PR c/19315
        * c-decl.c (finish_decl): Don't add the 'extern' storage class to
        objects of unknown size.

gcc/testsuite:

        PR c/19315
        gcc.dg/graphite/pr82451.c: Make array 'a' an extern.
        gcc.dg/redecl-10.c: Expect warnings for the static vars with unknown
        size.

From-SVN: r263556

gcc/

2018-08-15  Iain Sandoe  <iain@sandoe.co.uk>

	* config/darwin.c
	 (darwin_function_switched_text_sections): Delete.
	* gcc/config/darwin.h
	 (TARGET_ASM_FUNCTION_SWITCHED_TEXT_SECTIONS): Likewise.

From-SVN: r263555

	* src/c++17/memory_resource.cc [!_GLIBCXX_HAS_GTHREADS]
	(atomic_mem_res): Add unsynchronized definition for single-threaded.

From-SVN: r263554

gcc/

2018-08-15  Iain Sandoe  <iain@sandoe.co.uk>

	PR target/81685
	* config/darwin.h: (DEBUG_STR_OFFSETS_SECTION, DEBUG_LOCLISTS_SECTION,
	DEBUG_RNGLISTS_SECTION) new macros.  (DEBUG_PUBNAMES_SECTION,
	DEBUG_PUBTYPES_SECTION) update to include GNU variant.

From-SVN: r263553

2018-08-15  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86925
	* predict.c (expr_expected_value_1): When taking
        later predictor, assign also probability.
        Use fold_build2_initializer_loc in order to fold
        the expression in -frounding-math.
2018-08-15  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/86925
	* gcc.dg/predict-20.c: New test.
	* gcc.dg/predict-21.c: New test.

From-SVN: r263552

decl.c (check_previous_goto_1): When decl_jump_unsafe returns 2 emit an error instead of a permerror.

/cp
2018-08-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* decl.c (check_previous_goto_1): When decl_jump_unsafe returns 2
	emit an error instead of a permerror.

/testsuite
2018-08-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/init/goto3.C: Adjust for error instead of permerror.

From-SVN: r263551

Backport of RISC-V support for libffi go closures
* src/riscv/ffi.c (ffi_call_go, ffi_prep_go_closure): New
functions.
(ffi_call_int): Renamed from ffi_call.
(ffi_call_asm, ffi_closure_inner): Adjust interface.
* src/riscv/ffitarget.h (FFI_GO_CLOSURES): Define.
* src/riscv/sysv.S (ffi_go_closure_asm): New function.
(ffi_closure_asm, ffi_call_asm): Update for adjusted interfaces.

From-SVN: r263550

	* config/i386/i386.c (expand_vec_perm_movs): New method matching movs
	patterns.
	(expand_vec_perm_1): Try the new method.

	* gcc.target/i386/sse2-movs.c: New test.

From-SVN: r263549

re PR target/86547 (s390x: Maximum number of LRA assignment passes is achieved (30) when compiling a small inline assembler snippet)

        PR target/86547
	* lra-lives.c (remove_some_program_points_and_update_live_ranges):
        Check whether lra_live_max_point is 0 before dividing.

From-SVN: r263548

From-SVN: r263547

	* configure.ac: Check for <sys/random.h>.
	* configure, config.h.in: Regenerate.
	* intrinsics/random.c [HAVE_SYS_RANDOM_H]: Include <sys/random.h>.

From-SVN: r263543

As explained in the PR, there's no reason to call the nothrow delete,
we can just use the normal one.

	PR libstdc++/86954
	* include/bits/stl_tempbuf.h (return_temporary_buffer): Use
	non-placement delete.

From-SVN: r263542

gcc/ChangeLog:

	PR tree-optimization/86650
	* tree-vrp.c (vrp_prop::check_array_ref): Print an inform message.
	(vrp_prop::check_mem_ref): Same.

gcc/testsuite/ChangeLog:

	PR tree-optimization/86650
	* gcc.dg/Warray-bounds-34.c: New test.

From-SVN: r263541

2018-08-14  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/86116
	* interface.c (compare_type): Remove a CLASS/TYPE check.
	(compare_type_characteristics): New function that behaves like the old
	'compare_type'.
	(gfc_check_dummy_characteristics, gfc_check_result_characteristics):
	Call 'compare_type_characteristics' instead of 'compare_type'.

2018-08-14  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/86116
	* gfortran.dg/generic_34.f90: New test case.

From-SVN: r263540

	* include/std/chrono (__check_overflow): Simplify definition.
	(_Checked_integral_constant): Remove.

From-SVN: r263537

Define a class using std::mutex for when std::atomic<memory_resource*>
cannot be used to implement the default memory resource.

When std::mutex constructor is not constexpr the constant_init trick
won't work, so just define a global and use init_priority for it. The
compiler warns about using reserved priority, so put the definition in a
header file using #pragma GCC system_header to suppress the warning.

	PR libstdc++/86846
	* src/c++17/default_resource.h: New file, defining default_res.
	* src/c++17/memory_resource.cc [ATOMIC_POINTER_LOCK_FREE != 2]
	(atomic_mem_res): Define alternative for atomic<memory_resource*>
	using a mutex instead of atomics.

From-SVN: r263536

[ios::failure] p2: "When throwing ios_base::failure exceptions,
implementations should provide values of ec that identify the specific
reason for the failure."

This adds a new overload of __throw_ios_failure that can be passed
errno, to store error_code(errno, system_category()) in the exception
object.

	PR libstdc++/85343
	* acinclude.m4 (libtool_VERSION): Bump version.
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add new symbol version.
	Export new symbol.
	* configure: Regenerate.
	* doc/xml/manual/abi.xml: Document new versions.
	* include/bits/fstream.tcc (basic_filebuf<C, T>::underflow)
	(basic_filebuf<C, T>::xsgetn): Pass errno to __throw_ios_failure.
	* include/bits/functexcept.h (__throw_ios_failure(const char*, int)):
	Declare new overload.
	* src/c++11/cxx11-ios_failure.cc (__ios_failure): Add new constructor
	and static member function.
	(__throw_ios_failure(const char*, int)): Define.
	* src/c++98/ios_failure.cc [!_GLIBCXX_USE_DUAL_ABI]
	(__throw_ios_failure(const char*, int)): Define.
	* testsuite/util/testsuite_abi.cc: Update known and latest versions.

From-SVN: r263535

Rope iterators sometimes contain pointers to an internal buffer
inside the iterator itself.  When such an iterator is copied, the
copy incorrectly retains pointers to the original.

This patch takes the simple approach of not copying the cached
information when the internal buffer is being used, instead
requiring it to be recomputed when the copied iterator is
dereferenced.  An alternative would be to adjust the pointers so
they refer to the buffer in the copy.

2018-08-14  Jeremy Sawicki  <jeremy-gcc@sawicki.us>

	* include/ext/rope (_Rope_iterator_base(const _Rope_iterator_base&))
	(_Rope_const_iterator::operator=(const _Rope_const_iterator&))
	(_Rope_iterator::operator=(const _Rope_iterator&)): Ensure
	copied/assigned rope iterators don't retain pointers to the iterator
	they were copied/assigned from.
	* testsuite/ext/rope/7.cc: New.

From-SVN: r263534

* gcc/pretty-print.c (eat_esc_sequence): Swap the foreground and background
colors if the COMMON_LVB_REVERSE_VIDEO flag is set, and clear it thereafter,
as it only works for DBCS.

From-SVN: r263531

pretty-print.c (mingw_ansi_fputs): Do not call _close() on the handle returned by _get_osf_handle().

* gcc/pretty-print.c (mingw_ansi_fputs): Do not call _close() on the handle
returned by _get_osf_handle().

From-SVN: r263530

From-SVN: r263527

	PR c++/57891
	* call.c (struct conversion): Add check_narrowing_const_only.
	(build_converted_constant_expr): Set check_narrowing and
	check_narrowing_const_only.  Give error if expr is error node.
	(convert_like_real): Pass it to check_narrowing.
	* cp-tree.h (check_narrowing): Add a default parameter.
	* decl.c (compute_array_index_type): Use input_location instead of
	location_of.
	* pt.c (convert_nontype_argument): Return NULL_TREE if tf_error.
	* typeck2.c (check_narrowing): Don't warn for instantiation-dependent
	expressions.  Call maybe_constant_value instead of
	fold_non_dependent_expr.  Don't mention { } in diagnostic.  Only check
	narrowing for constants if CONST_ONLY.

	* g++.dg/cpp0x/Wnarrowing6.C: New test.
	* g++.dg/cpp0x/Wnarrowing7.C: New test.
	* g++.dg/cpp0x/Wnarrowing8.C: New test.
	* g++.dg/cpp0x/Wnarrowing9.C: New test.
	* g++.dg/cpp0x/Wnarrowing10.C: New test.
	* g++.dg/cpp0x/constexpr-47969.C: Adjust dg-error.
	* g++.dg/cpp0x/constexpr-ex2.C: Likewise.
	* g++.dg/cpp0x/constexpr-targ.C: Likewise.
	* g++.dg/cpp0x/scoped_enum2.C: Likewise.
	* g++.dg/ext/stmtexpr15.C: Likewise.
	* g++.dg/gomp/pr47963.C: Likewise.
	* g++.dg/init/new37.C: Likewise.
	* g++.dg/init/new43.C: Likewise.
	* g++.dg/other/fold1.C: Likewise.
	* g++.dg/parse/array-size2.C: Likewise.
	* g++.dg/template/dependent-name3.C: Likewise.
	* g++.dg/cpp0x/constexpr-data2.C: Add dg-error.
	* g++.dg/other/vrp1.C: Likewise.
	* g++.dg/template/char1.C: Likewise.

From-SVN: r263523

The getentropy function, found on Linux, OpenBSD, and recently also
FreeBSD, can be used to get random bytes to initialize the PRNG.  It
is similar to the traditional way of reading from /dev/urandom, but
being a system call rather than a special file, it doesn't suffer from
problems like running out of file descriptors, or failure when running
in a container where /dev/urandom may not be available.

Regtested on x86_64-pc-linux-gnu, Ok for trunk?

2018-08-13  Janne Blomqvist  <jb@gcc.gnu.org>

	* configure.ac: Check for getentropy.
	* intrinsics/random.c (getosrandom): Use getentropy if available.
	* config.h.in: Regenerated.
	* configure: Regenerated.

From-SVN: r263522

After the combine 2-2 changes, this testcase does not have a ZERO_EXTEND
in the intermediate code, but an AND instead.


gcc/testsuite/
	* gcc.target/powerpc/pr56605.c: The generated code can have an AND
	instead of a ZERO_EXTEND.

From-SVN: r263521

[gcc]

2018-07-06  Will Schmidt  <will_schmidt@vnet.ibm.com>

	* gcc/config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add support
	for folding vec_perm.

From-SVN: r263520

rs6000.c (rs6000_gimple_fold_builtin): Add support for gimple-folding of vec_pack() and vec_unpack() intrinsics.

[gcc]

2018-08-13 Will Schmidt  <will_schmidt@vnet.ibm.com>

	* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin):
	Add support for gimple-folding of vec_pack() and vec_unpack()
	intrinsics.

From-SVN: r263519

	PR libstdc++/45093
	* include/bits/stl_tree.h (_Rb_tree::_M_destroy_node(_Link_type)):
	Combine definitions to avoid --detect-odr-violations warning.

From-SVN: r263516

	* libsupc++/new_opa.cc (operator new(size_t, align_val_t)): Use
	__is_pow2 to check for valid alignment. Avoid branching when rounding
	size to multiple of alignment.

From-SVN: r263515

	* include/Makefile.am: Install <bit> and <version> for freestanding.
	* include/Makefile.in: Regenerate.
	* testsuite/17_intro/freestanding.cc: Check for <bit> and <version>.

From-SVN: r263514

This reverts commit r263461 / 2e920cd849b3cf0a72df4f172e27676a3e70b73f
because aligned_alloc is not defined for baremetal newlib targets, see
https://gcc.gnu.org/ml/libstdc++/2018-08/msg00065.html

Revert
2018-08-10  Sebastian Huber  <sebastian.huber@embedded-brains.de>

	PR target/85904
	* configure.ac: Define HAVE_ALIGNED_ALLOC if building for
	Newlib.
	* configure: Regenerate.

From-SVN: r263513

[gcc]

2018-08-13 Will Schmidt <will_schmidt@vnet.ibm.com>

	* config/rs6000/rs6000.c (rs6000_builtin_valid_without_lhs): Add
	vec_xst variants to the list.
	(rs6000_gimple_fold_builtin): Add support for folding unaligned
	vector loads and stores.

From-SVN: r263512

gcc/c/ChangeLog:

	PR tree-optimization/71625
	* c-parser.c (c_parser_declaration_or_fndef): Call
	braced_list_to_string.

gcc/c-family/ChangeLog:

	PR tree-optimization/71625
	* c-common.c (braced_list_to_string): New function.
	* c-common.h (braced_list_to_string): Declare it.

gcc/cp/ChangeLog:

	PR tree-optimization/71625
	* decl.c (check_initializer):  Call braced_list_to_string.
	(eval_check_narrowing): New function.
	* gcc/cp/typeck2.c (digest_init_r): Accept strings literals
	as initilizers for all narrow character types.

gcc/testsuite/ChangeLog:

	PR tree-optimization/71625

	* g++.dg/init/string2.C: New test.
	* g++.dg/init/string3.C: New test.
	* g++.dg/init/string4.C: New test.
	* gcc.dg/init-string-3.c: New test.
	* gcc.dg/strlenopt-55.c: New test.
	* gcc.dg/strlenopt-56.c: New test.

From-SVN: r263511

	P0806R2 - Deprecate implicit capture of this via [=]
	* lambda.c (add_default_capture): Formatting fixes.  Warn about
	deprecated implicit capture of this via [=].

	* g++.dg/cpp2a/lambda-this1.C: New test.
	* g++.dg/cpp2a/lambda-this2.C: New test.
	* g++.dg/cpp2a/lambda-this3.C: New test.

From-SVN: r263508

	PR c++/86915
	* decl.c (create_array_type_for_decl): Handle null name.

	* g++.dg/diagnostic/auto1.C: New test.

From-SVN: r263507