No functional change intended.

gcc/c-family/ChangeLog:
	* c-opts.cc (c_diagnostic_finalizer): Make "diagnostic" param
	const.

gcc/cp/ChangeLog:
	* cp-tree.h (cxx_print_error_function): Make diagnostic_info param
	const.
	* error.cc (cxx_print_error_function): Likewise.
	(cp_diagnostic_starter): Likewise.
	(cp_print_error_function): Likewise.

gcc/ChangeLog:
	* diagnostic-format-json.cc (on_begin_diagnostic): Convert param
	to const reference.
	(on_end_diagnostic): Likewise.
	(json_output_format::on_end_diagnostic): Likewise.
	* diagnostic-format-sarif.cc
	(sarif_invocation::add_notification_for_ice): Likewise.
	(sarif_result::on_nested_diagnostic): Likewise.
	(sarif_ice_notification::sarif_ice_notification): Likewise.
	(sarif_builder::end_diagnostic): Likewise.
	(sarif_builder::make_result_object): Likewise.
	(make_reporting_descriptor_object_for_warning): Likewise.
	(sarif_builder::make_locations_arr): Likewise.
	(sarif_output_format::on_begin_diagnostic): Likewise.
	(sarif_output_format::on_end_diagnostic): Likewise.
	* diagnostic.cc (default_diagnostic_starter): Make diagnostic_info
	param const.
	(default_diagnostic_finalizer): Likewise.
	(diagnostic_context::report_diagnostic): Pass diagnostic by
	reference to on_{begin,end}_diagnostic.
	(diagnostic_text_output_format::on_begin_diagnostic): Convert
	param to const reference.
	(diagnostic_text_output_format::on_end_diagnostic): Likewise.
	* diagnostic.h (diagnostic_starter_fn): Make diagnostic_info param
	const.
	(diagnostic_finalizer_fn): Likeewise.
	(diagnostic_output_format::on_begin_diagnostic): Convert param to
	const reference.
	(diagnostic_output_format::on_end_diagnostic): Likewise.
	(diagnostic_text_output_format::on_begin_diagnostic): Likewise.
	(diagnostic_text_output_format::on_end_diagnostic): Likewise.
	(default_diagnostic_starter): Make diagnostic_info param const.
	(default_diagnostic_finalizer): Likewise.
	* langhooks-def.h (lhd_print_error_function): Make diagnostic_info
	param const.
	* langhooks.cc (lhd_print_error_function): Likewise.
	* langhooks.h (lang_hooks::print_error_function): Likewise.
	* tree-diagnostic.cc (diagnostic_report_current_function):
	Likewise.
	(default_tree_diagnostic_starter): Likewise.
	(virt_loc_aware_diagnostic_finalizer): Likewise.
	* tree-diagnostic.h (diagnostic_report_current_function):
	Likewise.
	(virt_loc_aware_diagnostic_finalizer): Likewise.

gcc/fortran/ChangeLog:
	* error.cc (gfc_diagnostic_starter): Make diagnostic_info param
	const.
	(gfc_diagnostic_finalizer): Likewise.

gcc/jit/ChangeLog:
	* dummy-frontend.cc (jit_begin_diagnostic): Make diagnostic_info
	param const.
	(jit_end_diagnostic): Likewise.  Pass to add_diagnostic by
	reference.
	* jit-playback.cc (jit::playback::context::add_diagnostic):
	Convert diagnostic_info to const reference.
	* jit-playback.h (jit::playback::context::add_diagnostic):
	Likewise.

gcc/testsuite/ChangeLog:
	* g++.dg/plugin/show_template_tree_color_plugin.c
	(noop_starter_fn): Make diagnostic_info param const.
	* gcc.dg/plugin/diagnostic_group_plugin.c
	(test_diagnostic_starter): Likewise.
	* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
	(custom_diagnostic_finalizer): Likewise.
	* gcc.dg/plugin/location_overflow_plugin.c
	(verify_unpacked_ranges): Likewise.
	(verify_no_columns): Likewise.

libcc1/ChangeLog:
	* context.cc (plugin_print_error_function): Make diagnostic_info
	param const.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

The gdb tests of the libcc1 plugin have been failing lately.  I
tracked this down to a crash trying to access an enum's underlying
type.  This patch fixes the crash by setting this type.


	* libcc1plugin.cc (plugin_build_enum_type): Set
	ENUM_UNDERLYING_TYPE.

Recent Darwin versions place contraints on the use of run paths
specified in environment variables.  This breaks some assumptions
in the GCC build.

This change allows the user to configure a Darwin build to use
'@rpath/libraryname.dylib' in library names and then to add an
embedded runpath to executables (and libraries with dependents).

The embedded runpath is added by default unless the user adds
'-nodefaultrpaths' to the link line.

For an installed compiler, it means that any executable built with
that compiler will reference the runtimes installed with the
compiler (equivalent to hard-coding the library path into the name
of the library).

During build-time configurations  any "-B" entries will be added to
the runpath thus the newly-built libraries will be found by exes.

Since the install name is set in libtool, that decision needs to be
available here (but might also cause dependent ones in Makefiles,
so we need to export a conditional).

This facility is not available for Darwin 8 or earlier, however the
existing environment variable runpath does work there.

We default this on for systems where the external DYLD_LIBRARY_PATH
does not work and off for Darwin 8 or earlier.  For systems that can
use either method, if the value is unset, we use the default (which
is currently DYLD_LIBRARY_PATH).

ChangeLog:

	* configure: Regenerate.
	* configure.ac: Do not add default runpaths to GCC exes
	when we are building -static-libstdc++/-static-libgcc (the
	default).
	* libtool.m4: Add 'enable-darwin-at-runpath'.  Act  on the
	enable flag to alter Darwin libraries to use @rpath names.

gcc/ChangeLog:

	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* config/darwin.h: Handle Darwin rpaths.
	* config/darwin.opt: Handle Darwin rpaths.
	* Makefile.in:  Handle Darwin rpaths.

gcc/ada/ChangeLog:

	* gcc-interface/Makefile.in: Handle Darwin rpaths.

gcc/jit/ChangeLog:
	* Make-lang.in: Handle Darwin rpaths.

libatomic/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libbacktrace/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.

libgcc/ChangeLog:

	* config/t-slibgcc-darwin: Generate libgcc_s
	with an @rpath name.
	* config.host: Handle Darwin rpaths.

libgfortran/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths

libgm2/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* libm2cor/Makefile.am: Handle Darwin rpaths.
	* libm2cor/Makefile.in: Regenerate.
	* libm2iso/Makefile.am: Handle Darwin rpaths.
	* libm2iso/Makefile.in: Regenerate.
	* libm2log/Makefile.am: Handle Darwin rpaths.
	* libm2log/Makefile.in: Regenerate.
	* libm2min/Makefile.am: Handle Darwin rpaths.
	* libm2min/Makefile.in: Regenerate.
	* libm2pim/Makefile.am: Handle Darwin rpaths.
	* libm2pim/Makefile.in: Regenerate.

libgomp/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths

libitm/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libobjc/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libphobos/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* libdruntime/Makefile.am: Handle Darwin rpaths.
	* libdruntime/Makefile.in: Regenerate.
	* src/Makefile.am: Handle Darwin rpaths.
	* src/Makefile.in: Regenerate.

libquadmath/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libsanitizer/ChangeLog:

	* asan/Makefile.am: Handle Darwin rpaths.
	* asan/Makefile.in: Regenerate.
	* configure: Regenerate.
	* hwasan/Makefile.am: Handle Darwin rpaths.
	* hwasan/Makefile.in: Regenerate.
	* lsan/Makefile.am: Handle Darwin rpaths.
	* lsan/Makefile.in: Regenerate.
	* tsan/Makefile.am: Handle Darwin rpaths.
	* tsan/Makefile.in: Regenerate.
	* ubsan/Makefile.am: Handle Darwin rpaths.
	* ubsan/Makefile.in: Regenerate.

libssp/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* src/Makefile.am: Handle Darwin rpaths.
	* src/Makefile.in: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

lto-plugin/ChangeLog:
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

zlib/ChangeLog:
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

The GCC_ENABLE_PLUGINS configure logic for detecting whether -rdynamic
is necessary and supported uses an appropriate objdump for $host
binaries (running on $build) in cases where $host is $build or
$target.

However, it is missing such logic in the case where $host is neither
$build nor $target, resulting in the compilers not being linked with
-rdynamic and plugins not being usable with such a compiler.  In fact
$ac_cv_prog_OBJDUMP, as used when $build = $host, is always an objdump
for $host binaries that runs on $build; that is, it's appropriate to
use in this case as well.

Tested in such a configuration that it does result in cc1 being linked
with -rdynamic as expected.  Also bootstrapped with no regressions for
x86_64-pc-linux-gnu.

config/
	* gcc-plugin.m4 (GCC_ENABLE_PLUGINS): Use
	export_sym_check="$ac_cv_prog_OBJDUMP -T" also when host is not
	build or target.

gcc/
	* configure: Regenerate.

libcc1/
	* configure: Regenerate.

This reports common symbols like GNU nm, via a type code of 'C'.

ChangeLog:

	* libtool.m4 (lt_cv_sys_global_symbol_pipe): Augment symcode for
	Solaris 11.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

These are the os support patches we have been grooming and maintaining
for quite a few years over on git.haiku-os.org.  All of these
architectures are working and most have been stable for quite some time.

ChangeLog:

	* configure: Regenerate.
	* configure.ac: Add Haiku to list of ELF OSes
	* libtool.m4: Update sys_lib_dlsearch_path_spec on Haiku.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

My previous nm patch handled all cases but one -- if the user set NM in
the environment to a path which contained an option, libtool's nm
detection tries to run nm against a copy of nm with the options in it:
e.g. if NM was set to "nm --blargle", and nm was found in /usr/bin, the
test would try to run "/usr/bin/nm --blargle /usr/bin/nm --blargle".
This is unlikely to be desirable: in this case we should run
"/usr/bin/nm --blargle /usr/bin/nm".

Furthermore, as part of this nm has to detect when the passed-in $NM
contains a path, and in that case avoid doing a path search itself.
This too was thrown off if an option contained something that looked
like a path, e.g. NM="nm -B../prev-gcc"; libtool then tries to run
"nm -B../prev-gcc nm" which rarely works well (and indeed it looks
to see whether that nm exists, finds it doesn't, and wrongly concludes
that nm -p or whatever does not work).

Fix all of these by clipping all options (defined as everything
including and after the first " -") before deciding whether nm
contains a path (but not using the clipped value for anything else),
and then removing all options from the path-modified nm before
looking to see whether that nm existed.

NM=my-nm now does a path search and runs e.g.
  /usr/bin/my-nm -B /usr/bin/my-nm

NM=/usr/bin/my-nm now avoids a path search and runs e.g.
  /usr/bin/my-nm -B /usr/bin/my-nm

NM="my-nm -p../wombat" now does a path search and runs e.g.
  /usr/bin/my-nm -p../wombat -B /usr/bin/my-nm

NM="../prev-binutils/new-nm -B../prev-gcc" now avoids a path search:
  ../prev-binutils/my-nm -B../prev-gcc -B ../prev-binutils/my-nm

This seems to be all combinations, including those used by GCC bootstrap
(which, before this commit, fails to bootstrap when configured
--with-build-config=bootstrap-lto, because the lto plugin is now using
--export-symbols-regex, which requires libtool to find a working nm,
while also using -B../prev-gcc to point at the lto plugin associated
with the GCC just built.)

Regenerate all affected configure scripts.

ChangeLog:

	* libtool.m4 (LT_PATH_NM): Handle user-specified NM with
	options, including options containing paths.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

Libtool needs to get BSD-format (or MS-format) output out of the system
nm, so that it can scan generated object files for symbol names for
-export-symbols-regex support.  Some nms need specific flags to turn on
BSD-formatted output, so libtool checks for this in its AC_PATH_NM.
Unfortunately the code to do this has a pair of interlocking flaws:

 - it runs the test by doing an nm of /dev/null.  Some platforms
   reasonably refuse to do an nm on a device file, but before now this
   has only been worked around by assuming that the error message has a
   specific textual form emitted by Tru64 nm, and that getting this
   error means this is Tru64 nm and that nm -B would work to produce
   BSD-format output, even though the test never actually got anything
   but an error message out of nm -B.  This is fixable by nm'ing *nm
   itself* (since we necessarily have a path to it).

 - the test is entirely skipped if NM is set in the environment, on the
   grounds that the user has overridden the test: but the user cannot
   reasonably be expected to know that libtool wants not only nm but
   also flags forcing BSD-format output.  Worse yet, one such "user" is
   the top-level Cygnus configure script, which neither tests for
   nor specifies any BSD-format flags.  So platforms needing BSD-format
   flags always fail to set them when run in a Cygnus tree, breaking
   -export-symbols-regex on such platforms.  Libtool also needs to
   augment $LD on some platforms, but this is done unconditionally,
   augmenting whatever the user specified: the nm check should do the
   same.

   One wrinkle: if the user has overridden $NM, a path might have been
   provided: so we use the user-specified path if there was one, and
   otherwise do the path search as usual.  (If the nm specified doesn't
   work, this might lead to a few extra pointless path searches -- but
   the test is going to fail anyway, so that's not a problem.)

(Tested with NM unset, and set to nm, /usr/bin/nm, my-nm where my-nm is a
symlink to /usr/bin/nm on the PATH, and /not-on-the-path/my-nm where
*that* is a symlink to /usr/bin/nm.)

ChangeLog:

	* libtool.m4 (LT_PATH_NM): Try BSDization flags with a user-provided
	NM, if there is one.  Run nm on itself, not on /dev/null, to avoid
	errors from nms that refuse to work on non-regular files.  Remove
	other workarounds for this problem.  Strip out blank lines from the
	nm output.

fixincludes/ChangeLog:

	* configure: Regenerate.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

AR from older binutils doesn't work with --plugin and rc:

[hjl@gnu-cfl-2 bin]$ touch foo.c
[hjl@gnu-cfl-2 bin]$ ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c
[hjl@gnu-cfl-2 bin]$ ./ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c
./ar: no operation specified
[hjl@gnu-cfl-2 bin]$ ./ar --version
GNU ar (Linux/GNU Binutils) 2.29.51.0.1.20180112
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
[hjl@gnu-cfl-2 bin]$

Check if AR works with --plugin and rc before passing --plugin to AR and
RANLIB.

ChangeLog:

	* configure: Regenerated.
	* libtool.m4 (_LT_CMD_OLD_ARCHIVE): Check if AR works with
	--plugin and rc before enabling --plugin.

config/ChangeLog:

	* gcc-plugin.m4 (GCC_PLUGIN_OPTION): Check if AR works with
	--plugin and rc before enabling --plugin.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libiberty/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

Sync with binutils for building binutils with LTO:

50ad1254d50 GCC: Pass --plugin to AR and RANLIB

Detect GCC LTO plugin.  Pass --plugin to AR and RANLIB to support LTO
build.

ChangeLog:

	* Makefile.tpl (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	* configure.ac: Include config/gcc-plugin.m4.
	AC_SUBST AR_PLUGIN_OPTION and RANLIB_PLUGIN_OPTION.
	* libtool.m4 (_LT_CMD_OLD_ARCHIVE): Pass --plugin to AR and
	RANLIB if possible.
	* Makefile.in: Regenerated.
	* configure: Likewise.

config/ChangeLog:

	* gcc-plugin.m4 (GCC_PLUGIN_OPTION): New.

libiberty/ChangeLog:

	* Makefile.in (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	(configure_deps): Depend on ../config/gcc-plugin.m4.
	* configure.ac: AC_SUBST AR_PLUGIN_OPTION and
	RANLIB_PLUGIN_OPTION.
	* aclocal.m4: Regenerated.
	* configure: Likewise.

zlib/ChangeLog:

	* configure: Regenerated.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

gcc/c-family/ChangeLog:

	* c-ada-spec.cc (has_static_fields): Use _P() defines from tree.h.
	(dump_ada_declaration): Ditto.
	(dump_ada_structure): Ditto.
	* c-common.cc (unsafe_conversion_p): Ditto.
	(shorten_compare): Ditto.
	(pointer_int_sum): Ditto.
	(c_common_truthvalue_conversion): Ditto.
	(scalar_to_vector): Ditto.
	* c-common.h (gnu_vector_type_p): Ditto.
	* c-omp.cc (c_omp_depend_t_p): Ditto.
	(c_omp_split_clauses): Ditto.
	* c-ubsan.cc (ubsan_instrument_division): Ditto.
	* c-warn.cc (conversion_warning): Ditto.
	(warnings_for_convert_and_check): Ditto.

gcc/c/ChangeLog:

	* c-convert.cc (c_convert): Ditto.
	* c-decl.cc (merge_decls): Ditto.
	* c-parser.cc (c_parser_omp_clause_reduction): Ditto.
	(c_parser_omp_declare_reduction): Ditto.
	* c-typeck.cc (build_component_ref): Ditto.
	(convert_argument): Ditto.
	(pointer_diff): Ditto.
	(build_unary_op): Ditto.
	(build_c_cast): Ditto.
	(build_modify_expr): Ditto.
	(store_init_value): Ditto.
	(constexpr_init_fits_real_type): Ditto.
	(check_constexpr_init): Ditto.
	(c_finish_return): Ditto.
	(handle_omp_array_sections_1): Ditto.
	(c_finish_omp_clauses): Ditto.
	* gimple-parser.cc (c_finish_gimple_return): Ditto.

libcc1/ChangeLog:

	* libcc1plugin.cc (plugin_float_type): Ditto.
	* libcp1plugin.cc (plugin_reactivate_decl): Ditto.
	(plugin_get_float_type): Ditto.

This implements ABI-compliant lambda discriminators.  Not only do we
have per-scope counters, but we also distinguish by lambda signature.
Only lambdas with the same signature will need non-zero
discriminators.  As the discriminator is signature-dependent, we have
to process the lambda function's declaration before we can determine
it.  For templated and generic lambdas the signature is that of the
uninstantiated lambda -- not separate for each instantiation.

With this change, gcc and clang now produce the same lambda manglings
for all these testcases.

	gcc/cp/
	* cp-tree.h (LAMBDA_EXPR_SCOPE_SIG_DISCRIMINATOR): New.
	(struct tree_lambda_expr): Add discriminator_sig bitfield.
	(recrd_lambda_scope_sig_discriminator): Declare.
	* lambda.cc (struct lambda_sig_count): New.
	(lambda_discriminator): Add signature vector.
	(start_lambda_scope): Adjust.
	(compare_lambda_template_head, compare_lambda_sig): New.
	(record_lambda_scope_sig_discriminator): New.
	* mangle.cc (write_closure_type): Use the scope-sig discriminator for
	ABI >= 18.  Emit abi mangling warning if needed.
	* module.cc (trees_out::core_vals): Stream the new discriminator.
	(trees_in::core_vals): Likewise.
	* parser.cc (cp_parser_lambda_declarator_opt): Call
	record_lambda_scope_sig_discriminator.
	* pt.cc (tsubst_lambda_expr): Likewise.
	libcc1/
	* libcp1plugin.cc (plugin_start_lambda_closure_class_type):
	Initialize the per-scope, per-signature discriminator.
	gcc/testsuite/
	* g++.dg/abi/lambda-sig1-18.C: New.
	* g++.dg/abi/lambda-sig1-18vs17.C: New.
	* g++.dg/cpp1y/lambda-mangle-1-18.C: New.

We currently use a per-extra-scope counter to discriminate multiple
lambdas in a particular such scope.  This is not ABI compliant.  This
patch merely refactors the existing code to make it easier to drop in
a conformant mangling -- there's no functional change here.  I rename
the LAMBDA_EXPR_DISCIMINATOR to LAMBDA_EXPR_SCOPE_ONLY_DISCRIMINATOR,
foreshadowing that there'll be a new discriminator.  To provide ABI
warnings we'll need to calculate both, and that requires some
repacking of the lambda_expr's fields.  Finally, although we end up
calling the discriminator setter and the scope recorder (nearly)
always consecutively, it's clearer to handle it as two separate
operations.  That also allows us to remove the instantiation
special-case for a null extra-scope.

	gcc/cp/
	* cp-tree.h (LAMBDA_EXPR_DISCRIMINATOR): Rename to ...
	(LAMBDA_EXPR_SCOPE_ONLY_DISCRIMINATOR): ... here.
	(struct tree_lambda_expr): Make default_capture_mode &
	discriminator_scope bitfields.
	(record_null_lambda_scope) Delete.
	(record_lambda_scope_discriminator): Declare.
	* lambda.cc (struct lambda_discriminator): New struct.
	(lambda_scope, lambda_scope_stack): Adjust types.
	(lambda_count): Delete.
	(struct tree_int): Delete.
	(start_lambda_scope, finish_lambda_scope): Adjust.
	(record_lambda_scope): Only record the scope.
	(record_lambda_scope_discriminator): New.
	* mangle.cc (write_closure_type_name): Adjust.
	* module.cc (trees_out::core_vals): Likewise,
	(trees_in::core_vals): Likewise.
	* parser.cc (cp_parser_lambda_expression): Call
	record_lambda_scope_discriminator.
	* pt.cc (tsubst_lambda_expr): Adjust record_lambda_scope caling.  Call
	record_lambda_scope_discriminator. Commonize control flow on tsubsting
	the operator function.
	libcc1/
	* libcp1plugin.cc (plugin_start_closure): Adjust.
	gcc/testsuite/
	* g++.dg/abi/lambda-sig1-17.C: New.
	* g++.dg/abi/lambda-sig1.h: New.
	* g++.dg/cpp1y/lambda-mangle-1.C: Extracted to ...
	* g++.dg/cpp1y/lambda-mangle-1.h: ... here.
	* g++.dg/cpp1y/lambda-mangle-1-11.C: New
	* g++.dg/cpp1y/lambda-mangle-1-17.C

Needed after a recent change.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

liboffloadmic/ChangeLog:

	* configure: Regenerate.
	* plugin/configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

This change adds the configury bits to activate the build of
shared libs on VxWorks ports configured with --enable-shared,
for libraries variants where this is generally supported (rtp,
code model !large - currently not compatible with -fPIC).

Set lt_cv_deplibs_check_method in libtool.m4, so the build of
libraries know how to establish dependencies.  This is useful in
configurations such as aarch64 where proper support of LSE relies
on accurate dependency information between libstdc++ and libgcc_s
to begin with.

Regenerate configure scripts to reflect libtool.m4 change.

2022-10-09  Olivier Hainque  <hainque@adacore.com>

	* libtool.m4 (*vxworks*): When enable_shared, set dynamic_linker
	and friends for rtp !large. Assume the linker has the required
	abilities and set lt_cv_deplibs_check_method.

gcc/
	* config.gcc (*vxworks*): Add t-slibgcc fragment
	if enable_shared.

libgcc/
	* config.host (*vxworks*): When enable_shared, add
	libgcc and crtstuff "shared" fragments for rtp except
	large code model.
	(aarch64*-wrs-vxworks7*): Remove t-slibgcc-libgcc from
	the list of fragments.

2022-10-09  Olivier Hainque  <hainque@adacore.com>

gcc/
	* configure: Regenerate.

libatomic/
	* configure: Regenerate.

libbacktrace/
	* configure: Regenerate.

libcc1/
	* configure: Regenerate.

libffi/
	* configure: Regenerate.

libgfortran/
	* configure: Regenerate.

libgomp/
	* configure: Regenerate.

libitm/
	* configure: Regenerate.

libobjc/
	* configure: Regenerate.

liboffloadmic/
	* configure: Regenerate.

liboffloadmic/
	* plugin/configure: Regenerate.

libphobos/
	* configure: Regenerate.

libquadmath/
	* configure: Regenerate.

libsanitizer/
	* configure: Regenerate.

libssp/
	* configure: Regenerate.

libstdc++-v3/
	* configure: Regenerate.

libvtv/
	* configure: Regenerate.

lto-plugin/
	* configure: Regenerate.

zlib/
	* configure: Regenerate.

On musl <pthread.h> uses calloc() (via <sched.h>). <memory> includes
it indirectly and exposes use of poisoned calloc() when module code
is built:

    /build/build/./prev-gcc/xg++ ... ../../gcc-13-20220626/gcc/cp/mapper-resolver.cc
        In file included from /<<NIX>>/musl-1.2.3-dev/include/pthread.h:30,
                 from /build/build/prev-x86_64-unknown-linux-musl/libstdc++-v3/include/x86_64-unknown-linux-musl/bits/gthr-default.h:35,
                 ....
                 from /build/build/prev-x86_64-unknown-linux-musl/libstdc++-v3/include/memory:77,
                 from ../../gcc-13-20220626/gcc/../libcody/cody.hh:24,
                 from ../../gcc-13-20220626/gcc/cp/../../c++tools/resolver.h:25,
                 from ../../gcc-13-20220626/gcc/cp/../../c++tools/resolver.cc:23,
                 from ../../gcc-13-20220626/gcc/cp/mapper-resolver.cc:32:
    /<<NIX>>/musl-1.2.3-dev/include/sched.h:84:7: error: attempt to use poisoned "calloc"
       84 | void *calloc(size_t, size_t);
          |       ^
    /<<NIX>>/musl-1.2.3-dev/include/sched.h:124:36: error: attempt to use poisoned "calloc"
      124 | #define CPU_ALLOC(n) ((cpu_set_t *)calloc(1,CPU_ALLOC_SIZE(n)))
          |                                    ^

gcc/cp/

	PR c++/106102
	* mapper-client.cc: Include <memory> via "system.h".
	* mapper-resolver.cc: Ditto.
	* module.cc: Ditto.

libcc1/

	PR c++/106102
	* libcc1plugin.cc: Include <memory> via "system.h".
	* libcp1plugin.cc: Ditto.

$ac_cv_prog_OBJDUMP contains the --host OBJDUMP that
libtool has inferred. Current config/gcc-plugin.m4 does
not respect the user's choice for OBJDUMP.

	PR plugins/95648
config/

	* gcc-plugin.m4: Use libtool's $ac_cv_prog_OBJDUMP.

gcc/

	* configure: Regenerate.

libcc1/

	* configure: Regenerate.

In order to properly implement two-stage name lookup for dependent
operator expressions, we need to remember the result of unqualified
lookup of the operator at template definition time, and reuse that
result rather than performing another unqualified lookup at
instantiation time.

Ideally we could just store the lookup in the expression directly, but
as pointed out in r9-6405 this isn't really possible since we use the
standard tree codes to represent most dependent operator expressions.

We could perhaps create a new tree code to represent dependent operator
expressions, with enough operands to store the lookup along with
everything else, but that'd require a lot of careful work to make sure
we handle this new tree code properly across the frontend.

But currently type-dependent operator (and call) expressions are given
an empty TREE_TYPE, which dependent_type_p treats as dependent, so this
field is effectively unused except to signal that the expression is
type-dependent.  It'd be convenient if we could store the lookup there
while preserving the dependent-ness of the expression.

To that end, this patch creates a new kind of type, called
DEPENDENT_OPERATOR_TYPE, which we give to dependent operator expressions
and into which we can store the result of operator lookup at template
definition time (DEPENDENT_OPERATOR_TYPE_SAVED_LOOKUPS).  Since this
type is always dependent (by definition), and since the frontend doesn't
seem to care much about the exact type of a type-dependent expression,
using this type in place of a NULL_TREE type seems to "just work"; only
dependent_type_p and WILDCARD_TYPE_P need to be adjusted to return true
for this new type.

The rest of the patch mostly consists of adding the necessary plumbing
to pass DEPENDENT_OPERATOR_TYPE_SAVED_LOOKUPS to add_operator_candidates,
adjusting all callers of build_x_* appropriately, and removing the now
unnecessary push_operator_bindings mechanism.

In passing, this patch simplifies finish_constraint_binary_op to avoid
using build_x_binary_op for building a binary constraint-expr; we don't
need to consider operator overloads here, as the &&/|| inside a
constraint effectively always has the built-in meaning (since atomic
constraints must have bool type).

This patch also makes FOLD_EXPR_OP yield a tree_code instead of a raw
INTEGER_CST.

Finally, this patch adds the XFAILed test operator-8.C which is about
broken two-stage name lookup for rewritten non-dependent operator
expressions, an existing bug that's otherwise only documented in
build_new_op.

	PR c++/51577
	PR c++/83035
	PR c++/100465

gcc/cp/ChangeLog:

	* call.c (add_operator_candidates): Add lookups parameter.
	Use it to avoid performing a second unqualified lookup when
	instantiating a dependent operator expression.
	(build_new_op): Add lookups parameter and pass it appropriately.
	* constraint.cc (finish_constraint_binary_op): Use
	build_min_nt_loc instead of build_x_binary_op.
	* coroutines.cc (build_co_await): Adjust call to build_new_op.
	* cp-objcp-common.c (cp_common_init_ts): Mark
	DEPENDENT_OPERATOR_TYPE appropriately.
	* cp-tree.def (DEPENDENT_OPERATOR_TYPE): Define.
	* cp-tree.h (WILDCARD_TYPE_P): Accept DEPENDENT_OPERATOR_TYPE.
	(FOLD_EXPR_OP_RAW): New, renamed from ...
	(FOLD_EXPR_OP): ... this.  Change this to return the tree_code directly.
	(DEPENDENT_OPERATOR_TYPE_SAVED_LOOKUPS): Define.
	(templated_operator_saved_lookups): Define.
	(build_new_op): Add lookups parameter.
	(build_dependent_operator_type): Declare.
	(build_x_indirect_ref): Add lookups parameter.
	(build_x_binary_op): Likewise.
	(build_x_unary_op): Likewise.
	(build_x_compound_expr): Likewise.
	(build_x_modify_expr): Likewise.
	* cxx-pretty-print.c (get_fold_operator): Adjust after
	FOLD_EXPR_OP change.
	* decl.c (start_preparsed_function): Don't call
	push_operator_bindings.
	* decl2.c (grok_array_decl): Adjust calls to build_new_op.
	* method.c (do_one_comp): Likewise.
	(build_comparison_op): Likewise.
	* module.cc (trees_out::type_node): Handle DEPENDENT_OPERATOR_TYPE.
	(trees_in::tree_node): Likewise.
	* name-lookup.c (lookup_name): Revert r11-2876 change.
	(op_unqualified_lookup): Remove.
	(maybe_save_operator_binding): Remove.
	(discard_operator_bindings): Remove.
	(push_operator_bindings): Remove.
	* name-lookup.h (maybe_save_operator_binding): Remove.
	(push_operator_bindings): Remove.
	(discard_operator_bindings): Remove.
	* parser.c (cp_parser_unary_expression): Adjust calls to build_x_*.
	(cp_parser_binary_expression): Likewise.
	(cp_parser_assignment_expression): Likewise.
	(cp_parser_expression): Likewise.
	(do_range_for_auto_deduction): Likewise.
	(cp_convert_range_for): Likewise.
	(cp_parser_perform_range_for_lookup): Likewise.
	(cp_parser_template_argument): Likewise.
	(cp_parser_omp_for_cond): Likewise.
	(cp_parser_omp_for_incr): Likewise.
	(cp_parser_omp_for_loop_init): Likewise.
	(cp_convert_omp_range_for): Likewise.
	(cp_finish_omp_range_for): Likewise.
	* pt.c (fold_expression): Adjust after FOLD_EXPR_OP change. Pass
	templated_operator_saved_lookups to build_x_*.
	(tsubst_omp_for_iterator): Adjust call to build_x_modify_expr.
	(tsubst_expr) <case COMPOUND_EXPR>: Pass
	templated_operator_saved_lookups to build_x_*.
	(tsubst_copy_and_build) <case INDIRECT_REF>: Likewise.
	<case tcc_unary>: Likewise.
	<case tcc_binary>: Likewise.
	<case MODOP_EXPR>: Likewise.
	<case COMPOUND_EXPR>: Likewise.
	(dependent_type_p_r): Return true for DEPENDENT_OPERATOR_TYPE.
	* ptree.c (cxx_print_type): Handle DEPENDENT_OPERATOR_TYPE.
	* semantics.c (finish_increment_expr): Adjust call to
	build_x_unary_op.
	(finish_unary_op_expr): Likewise.
	(handle_omp_for_class_iterator): Adjust calls to build_x_*.
	(finish_omp_cancel): Likewise.
	(finish_unary_fold_expr): Use build_dependent_operator_type.
	(finish_binary_fold_expr): Likewise.
	* tree.c (cp_free_lang_data): Don't call discard_operator_bindings.
	* typeck.c (rationalize_conditional_expr): Adjust call to
	build_x_binary_op.
	(op_unqualified_lookup): Define.
	(build_dependent_operator_type): Define.
	(build_x_indirect_ref): Add lookups parameter and use
	build_dependent_operator_type.
	(build_x_binary_op): Likewise.
	(build_x_array_ref): Likewise.
	(build_x_unary_op): Likewise.
	(build_x_compound_expr_from_list): Adjust call to
	build_x_compound_expr.
	(build_x_compound_expr_from_vec): Likewise.
	(build_x_compound_expr): Add lookups parameter and use
	build_dependent_operator_type.
	(cp_build_modify_expr): Adjust call to build_new_op.
	(build_x_modify_expr): Add lookups parameter and use
	build_dependent_operator_type.
	* typeck2.c (build_x_arrow): Adjust call to build_new_op.

libcc1/ChangeLog:

	* libcp1plugin.cc (plugin_build_unary_expr): Adjust call to
	build_x_unary_op.
	(plugin_build_binary_expr): Adjust call to build_x_binary_op.

gcc/testsuite/ChangeLog:

	* g++.dg/lookup/operator-3.C: Split out operator overload
	declarations into ...
	* g++.dg/lookup/operator-3-ops.h: ... here.
	* g++.dg/lookup/operator-3a.C: New test.
	* g++.dg/lookup/operator-4.C: New test.
	* g++.dg/lookup/operator-4a.C: New test.
	* g++.dg/lookup/operator-5.C: New test.
	* g++.dg/lookup/operator-5a.C: New test.
	* g++.dg/lookup/operator-6.C: New test.
	* g++.dg/lookup/operator-7.C: New test.
	* g++.dg/lookup/operator-8.C: New test.

We now use a C++ compiler so that we need to process
CXXFLAGS as well as CFLAGS in the gcc-plugin config
fragment.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>

config/ChangeLog:

	* gcc-plugin.m4: Save and process CXXFLAGS.

gcc/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

The default for building host-side binaries for mdynamic-no-pic
hosts is to enable this.  However, it is not compatible with
dynamic libraries, so must be switched off for libcc1.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>

libcc1/ChangeLog:

	* Makefile.am: Switch mdynamic-no-pic to fPIC.
	* Makefile.in: Regenerated.

libcc1/ChangeLog:

	* libcp1plugin.cc (record_decl_address): Replace a direct use
	of TREE_NO_WARNING with suppress_warning.