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This makes durations, time points and calendrical types available for
freestanding. The clocks and time zone utilities are disabled for
freestanding, as they require functions in the hosted lib.
Add support for a new macro _GLIBCXX_NO_FREESTANDING_CHRONO which can be
used to explicitly disable <chrono> for freestanding.
libstdc++-v3/ChangeLog:
* doc/xml/manual/using.xml (_GLIBCXX_NO_FREESTANDING_CHRONO):
Document macro.
* doc/html/*: Regenerate.
* include/bits/chrono.h [_GLIBCXX_NO_FREESTANDING_CHRONO]:
Only include <bits/require_hosted.h> when this macro is defined.
[_GLIBCXX_HOSTED]: Only define clocks for hosted.
* include/bits/version.def (chrono_udls): Remove hosted=yes.
* include/bits/version.h: Regenerate.
* include/std/chrono [_GLIBCXX_HOSTED]: Only define clocks and
time zone utilities for hosted.
* testsuite/std/time/freestanding.cc: New test.
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There are lots of bugs that affect libstdc++ output from Doxygen, so
using 1.9.6 or later is recommended. Give a lower minimum, because some
distros still use 1.9.1 and that will work, albeit suboptimally.
libstdc++-v3/ChangeLog:
* doc/xml/manual/documentation_hacking.xml: Update minimum
Doxygen version.
* doc/html/*: Regenerate.
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libstdc++-v3:
* doc/xml/manual/prerequisites.xml: Remove note from the
GCC 4.0.1 days.
* doc/html/manual/setup.html: Regenerate.
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libstdc++-v3:
* doc/xml/manual/abi.xml: Update reference to
gcc.gnu.org/onlinedocs.
* doc/xml/manual/concurrency_extensions.xml (interface): Ditto.
* doc/xml/manual/extensions.xml: Ditto.
* doc/xml/manual/parallel_mode.xml: Ditto.
* doc/xml/manual/shared_ptr.xml: Ditto.
* doc/xml/manual/using_exceptions.xml: Ditto. And change GNU GCC
to GCC.
* doc/html/manual/abi.html: Regenerate.
* doc/html/manual/ext_concurrency_impl.html: Ditto.
* doc/html/manual/ext_demangling.html: Ditto.
* doc/html/manual/memory.html: Ditto.
* doc/html/manual/parallel_mode_design.html: Ditto.
* doc/html/manual/parallel_mode_using.html: Ditto.
* doc/html/manual/using_exceptions.html: Ditto.
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libstdc++v-3:
* doc/xml/manual/prerequisites.xml: Tweak two links to
installation docs. Fix grammar.
* doc/html/manual/setup.html: Regenerate.
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libstdc++-v3:
* doc/xml/manual/using.xml: Switch gcc.gnu.org links to https.
* doc/html/manual/using_concurrency.html: Regenerate.
* doc/html/manual/using_dynamic_or_shared.html: Ditto.
* doc/html/manual/using_headers.html: Ditto.
* doc/html/manual/using_namespaces.html: Ditto.
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libstdc++-v3:
* doc/xml/manual/configure.xml: Update Autobook 14 link.
Update GCC installation instructions link.
* doc/html/manual/configure.html: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/faq.xml: Replace viewcvs links with cgit links.
* doc/xml/manual/allocator.xml: Likewise.
* doc/xml/manual/mt_allocator.xml: Likewise.
* doc/html/*: Regenerate.
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libstdc++-v3:
* doc/xml/manual/debug.xml: Move gcc.gnu.org link to https.
Ditto for sourceware.org links.
* doc/html/manual/debug.html: Regenerate.
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libstdc++-v3:
* doc/xml/faq.xml: Move gcc.gnu.org to https.
* doc/html/faq.html: Regenerate.
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libstdc++-v3:
* doc/xml/api.xml: Move gcc.gnu.org links to https.
* doc/html/api.html: Regenerate.
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Link to the docs for GCC trunk instead. For the release branches, the
link should be to the docs for appropriate release branch.
Also replace the incomplete/outdated list of explicit -std options with
a single entry for the -std option.
libstdc++-v3/ChangeLog:
PR libstdc++/115269
* doc/xml/manual/using.xml: Replace link to gcc-4.3.2 docs.
Replace list of -std=... options with a single entry for -std.
* doc/html/manual/using.html: Regenerate.
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This section can be misread to say that shrink_to_fit is available from
GCC 3.4, but it was added later.
libstdc++-v3/ChangeLog:
* doc/xml/manual/strings.xml: Clarify that GCC 4.5 added
std::string::shrink_to_fit.
* doc/html/manual/strings.html: Regenerate.
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This simplifies the changes needed after branching for a new release, so
that new line breaks don't need to be introduced every time we branch.
libstdc++-v3/ChangeLog:
* doc/html/manual/status.html: Regenerate.
* doc/xml/manual/status_cxx1998.xml: Adjust whitespace.
* doc/xml/manual/status_cxx2011.xml: Likewise.
* doc/xml/manual/status_cxx2014.xml: Likewise.
* doc/xml/manual/status_cxx2017.xml: Likewise.
* doc/xml/manual/status_cxx2020.xml: Likewise.
* doc/xml/manual/status_cxx2023.xml: Likewise.
* doc/xml/manual/status_cxxtr1.xml: Likewise.
* doc/xml/manual/status_cxxtr24733.xml: Likewise.
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libstdc++-v3/ChangeLog:
* doc/doxygen/stdheader.cc (init_map): Add missing headers.
* doc/doxygen/user.cfg.in (EXCLUDE): Exclude generated files for
std::format and std::text_encoding.
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We can replace "GCC <next>" with "GCC 14.1.0" now that we're nearing the
release.
libstdc++-v3/ChangeLog:
* doc/xml/manual/abi.xml: Replace "<next>" with "14.1.0".
* doc/html/manual/abi.html: Regenerate.
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When we are already touching this topic, here is a patch like r13-5126
which documents the upcoming release symbol versions in the documentation.
2024-04-11 Jakub Jelinek <jakub@redhat.com>
* doc/xml/manual/abi.xml: Add latest library versions.
* doc/html/manual/abi.html: Regenerate.
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There are several more sub-directories below 'src' now, with lots more
conveience libraries. Document them all as of GCC 14.
Also document how to regenerate the generated headers under include/bits
and how to update the tzdata.zi file.
libstdc++-v3/ChangeLog:
* doc/xml/manual/build_hacking.xml: Document generated files.
Update list of convenience libraries and sub-directories under
the src directory.
* doc/html/*: Regenerate.
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The bug with exceptions thrown during a std::call_once call affects all
targets, so fix the docs that say it only affects non-Linux targets.
libstdc++-v3/ChangeLog:
PR libstdc++/66146
* doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
note about std::call_once.
* doc/xml/manual/status_cxx2014.xml: Likewise.
* doc/xml/manual/status_cxx2017.xml: Likewise.
* doc/html/manual/status.html: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
* doc/html/manual/status.html: Regenerate.
* include/bits/version.def: Fix typo in comment.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/debug.xml: Improve docs on debug builds and
using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
the most relevant ones first.
* doc/xml/manual/using.xml: Add comma.
* doc/html/*: Regenerate.
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The macro-based concept checks are unmaintained and do not support C++11
or later, so reject valid code. If nobody plans to update them we should
consider removing them. Alternatively, we could ignore the macro for
C++11 and later, so they have no effect and don't reject valid code.
libstdc++-v3/ChangeLog:
* doc/xml/manual/debug.xml: Document that concept checking might
be removed in future.
* doc/xml/manual/extensions.xml: Likewise.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/appendix_contributing.xml: Change URLs to use
https.
* doc/html/manual/*: Regenerate.
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We don't want a separate ChangeLog submission now.
libstdc++-v3/ChangeLog:
* doc/xml/manual/appendix_contributing.xml: Replace outdated
info on ChangeLog entries.
* doc/html/manual/appendix_contributing.html: Regenerate.
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The configure option is no longer necessary.
libstdc++-v3/ChangeLog:
* doc/xml/manual/debug_mode.xml: Update docs for backtraces.
* doc/html/manual/debug_mode_using.html: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/test.xml: Fix spelling of <envar> elements.
* doc/html/manual/test.html: Regenerate.
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libstdc++-v3:
* doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
version 1.
* doc/html/manual/status.html: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/using.xml: Update tables of supported headers.
* doc/html/*: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
_GLIBCXX_DEBUG_BACKTRACE macro.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/evolution.xml: Fix spelling.
* doc/html/manual/api.html: Regenerate.
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The API Evolution section of the manual should mention when the
libstdc++exp.a library was added.
libstdc++-v3/ChangeLog:
* doc/xml/manual/evolution.xml: Document addition of
libstdc++exp.a.
* doc/html/*: Regenerate.
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The buildstat.html pages have not existed since gcc-8 so remove
referencs to them in the libstdc++ manual.
libstdc++-v3/ChangeLog:
* doc/html/*: Regenerate.
* doc/xml/faq.xml: Remove reference to buildstat.html pages.
* doc/xml/manual/test.xml: Likewise
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The name "_N" is listed as a reserved name on Solaris, so we shouldn't
use it as an example of our naming conventions.
libstdc++-v3/ChangeLog:
* doc/xml/manual/appendix_contributing.xml: Replace example that
uses a BADNAME.
* doc/html/manual/source_code_style.html: Regenerate.
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The row for P1466R3 was missing the info on when it was implemented.
libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx2020.xml: Tweak P1466R3 status.
* doc/html/manual/status.html: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/configure.xml: Use conventional option name.
* doc/xml/manual/status_cxx2020.xml: Update.
* doc/xml/manual/status_cxx2023.xml: Update.
* doc/html/*: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/intro.xml: Clarify that building libstdc++
separately from GCC is not supported.
* doc/xml/manual/prerequisites.xml: Note msgfmt prerequisite for
testing.
* doc/html/manual/setup.html: Regenerate.
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This copies the code from the compiler's gcc/testsuite/lib/g++-dg.exp so
that each test can be run multiple times, with different -std options.
This means that we can remove most { dg-options "-std=gnu++20" }
directives from tests, because the testsuite will automatically select
a set of -std options that includes that version.
Tests that should only run for a specific standard (e.g. ones that use
something like { dg-do run { target c++11_only } }) should still specify
that standard with { dg-options "-std=gnu++11" }, which overrides the
automatic selection. But a dg-options that selects a newer standard than
the default can be removed, because that standard will be selected
automatically based on a selector like { target c++20 } in the dg-do
directive. This will allow those tests to be run for more than just the
one they currently hardcode, so that e.g. std::format tests can be run
for all of C++20, C++23 and C++26. Currently that has to be done by
adding a second test file that uses a different dg-options line.
By default most tests will continue to run with only the default dialect
(currently -std=gnu++17) so that the time to run the entire testsuite is
not increased. We can revisit this later if increasing the testsuite
time (and coverage) is acceptable. Libstdc++ developers can easily
override the defaults to run for multiple versions. To test all
versions, either add 'set v3_std_list { 98 11 14 17 20 23 26 }' to
~/.dejagnurc or define GLIBCXX_TESTSUITE_STDS="98,11,14,17,20,23,26" in
the environment.
This should be more efficient than the current way to test with multple
standards, i.e. --target_board=unix{-std=c++14,-std=c++17,-std=c++20},
because today all tests with an explicit -std option hardcoded in them
get run for each target board variation but using the exact same
hardcoded -std every time. With the new approach you can just use the
default --target_board=unix and set GLIBCXX_TESTSUITE_STDS="14,17,20"
and now a test that has { target c++20 } will only run once (and be
UNSUPPORTED twice), instead of running with identical options three
times.
In order to support ~/.dejagnurc and $DEJAGNU files that need to work
with versions of GCC without this change, a new variable is added to
site.tmp to detect whether v3_std_list is supported. That allows e.g.
if { [info exists v3-use-std-list] } {
set v3_std_list { 11 17 23 }
set target_list { "unix{,-m32}" }
} else {
set target_list { "unix{,-std=gnu++2b,-std=gnu++11,-m32}" }
}
libstdc++-v3/ChangeLog:
* doc/xml/manual/test.xml: Update documentation on running and
writing tests.
* doc/html/manual/test.html: Regenerate.
* testsuite/Makefile.am: Add v3-use-std-list to site.tmp
* testsuite/Makefile.in: Regenerate.
* testsuite/lib/dg-options.exp (add_options_for_strict_std): New
proc.
* testsuite/lib/libstdc++.exp (search_for): New utility proc.
(v3-dg-runtest): New proc to replace dg-runtest.
* testsuite/libstdc++-dg/conformance.exp: Use v3-dg-runtest.
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This consolidates the three static archives for extensions into one, so
that -lstdc++exp can be used to provide the definitions of all unstable
library features.
The libstdc++_libbacktrace.a archive is now just a "noinst" convenience
library that is only used during the build, not installed. Its contents
are added to libstdc++exp.a, along with the new non-inline definitions
of std::stacktrace symbols.
The libstdc++fs.a archive is still installed, but its contents are
duplicated in libstdc++exp.a now. This means -lstdc++exp can be used
instead of -lstdc++fs. For targets using the GNU linker we should
consider replacing libstdc++fs.a with a linker script that does
INPUT(libstdc++exp.a).
The tests for <experimental/filesystem> could be changed to use
-lstdc++exp instead of -lstdc++fs, which would allow removing
src/filesystem/.libs from the LDFLAGS in scripts/testsuite_flags.in,
but that can be done at a later date.
libstdc++-v3/ChangeLog:
* acinclude.m4 (GLIBCXX_CONFIGURE): Add c++23 directory.
* configure: Regenerate.
* doc/html/manual/*: Regenerate.
* doc/xml/manual/using.xml: Update documentation on linking.
* include/std/stacktrace: Remove declarations of libbacktrace
APIs.
(stacktrace_entry::_S_err_handler, stacktrace_entry::_S_init):
Remove.
(stacktrace_entry::_Info): New class.
(stacktrace_entry::_M_get_info): Use _Info.
(__stacktrace_impl): New class.
(basic_stacktrace): Derive from __stacktrace_impl.
(basic_stacktrace::current): Use __stacktrace_impl::_S_current.
* scripts/testsuite_flags.in: Adjust LDFLAGS to find
libstdc++exp instead of libstdc++_libbacktrace.
* src/Makefile.am (SUBDIRS): Add c++23 directory.
* src/Makefile.in: Regenerate.
* src/c++20/Makefile.am: Fix comment.
* src/c++20/Makefile.in: Regenerate.
* src/c++23/Makefile.am: New file.
* src/c++23/Makefile.in: New file.
* src/c++23/stacktrace.cc: New file with definitions of
stacktrace_entry::_Info and __stacktrace_impl members.
* src/experimental/Makefile.am: Use LIBADD to include other
libraries.
* src/experimental/Makefile.in: Regenerate.
* src/libbacktrace/Makefile.am: Use noinst_LTLIBRARIES.
* src/libbacktrace/Makefile.in: Regenerate.
* testsuite/19_diagnostics/stacktrace/current.cc: Adjust
dg-options to use -lstdc++exp.
* testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
* testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
* testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
Likewise.
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The info manual isn't moved to the expected location after
generation which causes the install rule for it to fail.
libstdc++-v3/Changelog:
* doc/Makefile.am: Fix 'doc-install-info' rule.
Fix typo in commment.
* doc/Makefile.in: Regenerate.
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libstdc++-v3/ChangeLog:
PR libstdc++/110574
* doc/xml/manual/configure.xml: Describe stdio_pure argument to
--enable-cstdio.
* doc/html/manual/configure.html: Regenerate.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/extensions.xml: Remove demangle exception
description and include.
* doc/html/manual/ext_demangling.html: Regenerate.
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The addition of __cxa_call_terminate@@CXXABI_1.3.15 on trunk means we
need a new version.
libstdc++-v3/ChangeLog:
* acinclude.m4 (libtool_VERSION): Update to 6.0.33.
* configure: Regenerate.
* doc/xml/manual/abi.xml: Add libstdc++.so.6.0.33.
* doc/html/manual/abi.html: Regenerate.
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Traditionally libstdc++ allowed containers and strings to be
instantiated with allocator's that have the wrong value type, implicitly
rebinding the allocator to the container's value type. Since C++20 that
has been explicitly ill-formed, so the extension is no longer supported
in strict modes (e.g. -std=c++17) and in C++20 and later.
libstdc++-v3/ChangeLog:
* doc/xml/manual/evolution.xml: Document removal of implicit
allocator rebinding extensions in strict mode and for C++20.
* doc/html/*: Regenerate.
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Prior to N0966 (July 1996) the std::setfill manipulator was specified to
work with both input and output streams. In the final C++98 standard it
is only specified to work with output streams.
We have always supported it for input streams, despite that never being
in the standard, and having no meaning for any input streams defined by
the standard. This commit adds a deprecated attribute to the overload
for input streams, so that we can stop supporting this some day.
libstdc++-v3/ChangeLog:
PR libstdc++/109922
* include/std/iomanip (operator>>(basic_istream&, _Setfill)):
Add deprecated attribute to non-standard overload.
* doc/xml/manual/evolution.xml: Document deprecation.
* doc/html/*: Regenerate.
* testsuite/27_io/manipulators/standard/char/1.cc: Add
dg-warning for expected deprecated warning.
* testsuite/27_io/manipulators/standard/char/2.cc: Likewise.
* testsuite/27_io/manipulators/standard/wchar_t/1.cc: Likewise.
* testsuite/27_io/manipulators/standard/wchar_t/2.cc: Likewise.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/strings.xml: Move lafstern.org reference to https.
* doc/html/manual/strings.html: Regenerate.
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The _GLIBCXX_USE_C99_STDINT_TR1 macro (and the comments about it in
acinclude.m4 and config.h) are misleading when it is also used for
<stdint>, not only <tr1/stdint>. It is also wrong, because the
configure checks for TR1 use -std=c++98 and a target might define
uint32_t etc. for C++11 but not for C++98.
Add a separate configure check for the <stdint.h> types using -std=c++11
for the checks. Use the result of that separate check in <cstdint> and
most other places that still depend on the macro (many uses of that
macro have been removed already). The remaining uses of the STDINT_TR1
macro are really for TR1, or are in the src/c++11/compatibility-*.cc
files, where we don't want/need to change the condition they depend on
(if those symbols were only exported when <stdint.h> types were
available for -std=c++98, then that's the condition we should continue
to use for whether to export the compat symbols now).
Make similar changes for the related _GLIBCXX_USE_C99_INTTYPES_TR1 and
_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1 macros, adding new macros for
non-TR1 uses.
libstdc++-v3/ChangeLog:
* acinclude.m4 (GLIBCXX_USE_C99): Check for <stdint.h> types in
C++11 mode and define _GLIBCXX_USE_C99_STDINT. Check for
<inttypes.h> features in C++11 mode and define
_GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T.
* config.h.in: Regenerate.
* configure: Regenerate.
* doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
* include/bits/chrono.h: Check _GLIBCXX_USE_C99_STDINT instead
of _GLIBCXX_USE_C99_STDINT_TR1.
* include/c_compatibility/inttypes.h: Check
_GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T
instead of _GLIBCXX_USE_C99_INTTYPES_TR1 and
_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
* include/c_compatibility/stdatomic.h: Check
_GLIBCXX_USE_C99_STDINT instead of _GLIBCXX_USE_C99_STDINT_TR1.
* include/c_compatibility/stdint.h: Likewise.
* include/c_global/cinttypes: Check _GLIBCXX_USE_C99_INTTYPES
and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T instead of
_GLIBCXX_USE_C99_INTTYPES_TR1 and
_GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
* include/c_global/cstdint: Check _GLIBCXX_USE_C99_STDINT
instead of _GLIBCXX_USE_C99_STDINT_TR1.
* include/std/atomic: Likewise.
* src/c++11/cow-stdexcept.cc: Likewise.
* testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
Likewise.
* testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
Likewise.
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The _GLIBCXX_USE_C99_COMPLEX_TR1 macro (and the comments about it in
acinclude.m4 and config.h) are misleading when it is also used for
<complex>, not only <tr1/complex>. It is also wrong, because the
configure checks for TR1 use -std=c++98 and a target might define cacos
etc. for C++11 but not for C++98.
Add a separate configure check for the inverse trigonometric functions
that are covered by _GLIBCXX_USE_C99_COMPLEX_TR1, but using -std=c++11
for the checks. Use the result of that separate check in <complex>.
libstdc++-v3/ChangeLog:
* acinclude.m4 (GLIBCXX_USE_C99): Check for complex inverse trig
functions in C++11 mode and define _GLIBCXX_USE_C99_COMPLEX_ARC.
* config.h.in: Regenerate.
* configure: Regenerate.
* doc/doxygen/user.cfg.in (PREDEFINED): Add new macro.
* include/std/complex: Check _GLIBCXX_USE_C99_COMPLEX_ARC
instead of _GLIBCXX_USE_C99_COMPLEX_TR1.
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libstdc++-v3/ChangeLog:
* doc/xml/manual/abi.xml (abi.versioning.history): Document
libstdc++.so.6.0.32 and GLIBCXX_3.4.32 version.
* doc/html/manual/abi.html: Regenerate.
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GCC_11.0 is an aarch64-specific outlier.
libstdc++-v3/ChangeLog:
* doc/xml/manual/abi.xml (abi.versioning.history): Add
GCC_7.0.0, GCC_9.0.0, GCC_11.0, GCC_12.0.0, GCC_13.0.0 for
libgcc_s.
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