Implement a long-standing request to support tuning the size of the
emergency buffer for allocating exceptions after malloc fails, or to
disable that buffer entirely.
It's now possible to disable the dynamic allocation of the buffer and
use a fixed-size static buffer, via --enable-libstdcxx-static-eh-pool.
This is a built-time choice that is baked into libstdc++ and so affects
all code linked against that build of libstdc++.
The size of the pool can be set by --with-libstdcxx-eh-pool-obj-count=N
which is measured in units of sizeof(void*) not bytes. A given exception
type such as std::system_error depends on the target, so giving a size
in bytes wouldn't be portable across 16/32/64-bit targets.
When libstdc++ is configured to use a dynamic buffer, the size of that
buffer can now be tuned at runtime by setting the GLIBCXX_TUNABLES
environment variable (c.f. PR libstdc++/88264). The number of exceptions
to reserve space for is controlled by the "glibcxx.eh_pool.obj_count"
and "glibcxx.eh_pool.obj_size" tunables. The pool will be sized to be
able to allocate obj_count exceptions of size obj_size*sizeof(void*) and
obj_count "dependent" exceptions rethrown by std::rethrow_exception.
With the ability to tune the buffer size, we can reduce the default pool
size on 32-bit and 16-bit targets. Most users never need to throw 1kB
exceptions in parallel from hundreds of threads after malloc is OOM. The
users who do need that can use the tunables to select larger sizes.
The old defaults can be chosen at runtime by setting GLIBCXX_TUNABLES
to:
64-bit: glibcxx.eh_pool.obj_count=64:glibcxx.eh_pool.obj_size=112
32-bit: glibcxx.eh_pool.obj_count=32:glibcxx.eh_pool.obj_size=104
Or approximated by configuring with:
64-bit: --with-libstdcxx-eh-pool-obj-count=252
32-bit: --with-libstdcxx-eh-pool-obj-count=94
libstdc++-v3/ChangeLog:
PR libstdc++/68606
* Makefile.in: Regenerate.
* acinclude.m4 (GLIBCXX_EMERGENCY_EH_ALLOC): New macro.
* configure: Regenerate.
* configure.ac: Use GLIBCXX_EMERGENCY_EH_ALLOC.
* crossconfig.m4: Check for secure_getenv.
* doc/Makefile.in: Regenerate.
* doc/xml/manual/configure.xml: Document new configure options.
* doc/xml/manual/evolution.xml: Document addition of tunables.
* doc/xml/manual/using_exceptions.xml: Document emergency
buffer and tunables.
* doc/html/*: Regenerate.
* include/Makefile.in: Regenerate.
* libsupc++/Makefile.am: Use EH_POOL_FLAGS.
* libsupc++/Makefile.in: Regenerate.
* libsupc++/eh_alloc.cc (EMERGENCY_OBJ_SIZE): Define in units
of sizeof(void*) not including the ABI's exception header.
(EMERGENCY_OBJ_COUNT): Define as target-independent calculation
based on word size.
(MAX_OBJ_COUNT): Define macro for upper limit on pool size.
(pool) [_GLIBCXX_EH_POOL_STATIC]: Use fixed-size buffer.
(pool::buffer_size_in_bytes): New static member function.
(pool::pool): Parse GLIBCXX_TUNABLES environment variable to set
pool size at runtime.
(pool::in_pool): Use std::less<void*> for total order.
(__freeres) [_GLIBCXX_EH_POOL_STATIC]: Do nothing.
(__cxa_free_exception, __cxa_free_dependent_exception): Add
[[unlikely]] attributes.
* po/Makefile.in: Regenerate.
* python/Makefile.in: Regenerate.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.in: Regenerate.
* src/c++17/Makefile.in: Regenerate.
* src/c++20/Makefile.in: Regenerate.
* src/c++98/Makefile.in: Regenerate.
* src/filesystem/Makefile.in: Regenerate.
* src/libbacktrace/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
This matches how the issues are styled in the LWG issues list, and also
allows us to use italics for "cv" (e.g. in issue 2487).
libstdc++-v3/ChangeLog:
* doc/xml/manual/intro.xml: Add role="bold" attribute to
emphasis elements for issue titles.
* doc/html/manual/bugs.html: Regenerate.
LWG 2487 added a precondition to std::bind for C++17, making
volatile-qualified uses undefined. We still support it, but with a
deprecated warning.
P1065R2 made it explicitly ill-formed for C++20, so we should no longer
accept it as deprecated. This implements that change.
libstdc++-v3/ChangeLog:
* doc/xml/manual/evolution.xml: Document std::bind API
changes.
* doc/xml/manual/intro.xml: Document LWG 2487 status.
* doc/xml/manual/using.xml: Clarify default value of
_GLIBCXX_USE_DEPRECATED.
* doc/html/*: Regenerate.
* include/std/functional (_Bind::operator()(Args&&...) volatile)
(_Bind::operator()(Args&&...) const volatile)
(_Bind_result::operator()(Args&&...) volatile)
(_Bind_result::operator()(Args&&...) const volatile): Replace
with deleted overload for C++20 and later.
* testsuite/20_util/bind/cv_quals.cc: Check for deprecated
warnings in C++17.
* testsuite/20_util/bind/cv_quals_2.cc: Likewise, and check for
ill-formed in C++20.
Remove the bogus -D__allocator_base=std::__new_allocator macro
definition for Doxygen, because that's an alias template for C++11 and
later, not a macro.
Fix the @cond/@endcond pair that span the end of an @addtogroup group.
Add another @endcond inside the group, and another @cond after it.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (PREDEFINED): Remove __allocator_base.
* include/bits/allocator.h: Fix nesting of Doxygen commands.
libstdc++-v3/ChangeLog:
PR libstdc++/105678
* doc/xml/manual/using.xml: Document -lstdc++_libbacktrace
requirement for using std::stacktrace. Also adjust -frtti and
-fexceptions to document non-default (i.e. negative) forms.
* doc/html/*: Regenerate.
These are the C++23 proposals supported in the gcc-12 branch.
libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx2023.xml: Update with gcc-12 support.
* doc/html/*: Regenerate.
These are the C++23 proposals already supported in the gcc-11 branch.
libstdc++-v3/ChangeLog:
* doc/xml/manual/intro.xml: Include new chapter.
* doc/xml/manual/status_cxx2020.xml: Tweak release numbers.
* doc/xml/manual/status_cxx2023.xml: New file.
* doc/html/*: Regenerate.
libstdc++-v3/ChangeLog:
* doc/html/manual/status.html: Regenerate.
* doc/xml/manual/status_cxx2020.xml: Fix supported version for
C++20 bit operations.
The non-member swap for std::exception_ptr is in a nested namespace and
so can only be found by ADL currently. Add a using-declaration so that
qualified std::swap calls will use the std::exception_ptr::swap member,
instead of the generic std::swap.
There's no new test for this, because the generic std::swap works, it
just does more work than is necessary.
Also tell Doxygen to replace the __exception_ptr namespace with
"__unspecified__" in the generate docs, so the real name is not
documented.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (PREDEFINED): Replace __exception_ptr
with "__unspecified__".
* libsupc++/exception_ptr.h: Improve doxygen docs.
(__exception_ptr::swap): Also declare in namespace std.
Add @headerfile and @since tags. Improve grouping of non-member
functions via @relates tags.
Mark the std::pair base class of std::sub_match as undocumented, so that
the docs don't show all the related non-member functions are part of the
sub_match API. Use a new macro to re-add the data members for Doxygen
only.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (PREDEFINED): Define macro
_GLIBCXX_DOXYGEN_ONLY to expand its argument.
* include/bits/c++config (_GLIBCXX_DOXYGEN_ONLY): Define.
* include/bits/regex.h: Improve doxygen docs.
* include/bits/regex_constants.h: Likewise.
* include/bits/regex_error.h: Likewise.
Use macros to open and close the inline namespace _V2 that is used for
ABI versioning of individual components such as chrono::system_clock.
This allows the namespace to be hidden in the docs generated by Doxygen,
so that we document std::foo instead of std::_V2::foo.
This also makes it easy to remove that namespace entirely for the
gnu-versioned-namespace build, where everything is already versioned as
std::__8 and there are no backwards compatibility guarantees.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (PREDEFINED): Expand new macros to
nothing.
* include/bits/c++config (_GLIBCXX_BEGIN_INLINE_ABI_NAMESPACE)
(_GLIBCXX_END_INLINE_ABI_NAMESPACE): Define new macros.
* include/bits/algorithmfwd.h (_V2::__rotate): Use new macros
for the namespace.
* include/bits/chrono.h (chrono::_V2::system_clock): Likewise.
* include/bits/stl_algo.h (_V2::__rotate): Likewise.
* include/std/condition_variable (_V2::condition_variable_any):
Likewise.
* include/std/system_error (_V2::error_category): Likewise.
Before Doxygen version 1.9.2 this option is broken (see
https://github.com/doxygen/doxygen/issues/8638 for more details) and
classes are not added to the correct groups by @ingroup and @addtogroup.
Also remove the obsolete CLASS_DIAGRAMS option that causes a warning.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (GROUP_NESTED_COMPOUNDS): Set to NO.
(CLASS_DIAGRAMS): Remove obsolete option.
There is no need to require FSF copyright for tests that are just
"self-evident" ways to check the API and behaviour of the library.
This is consistent with tests for the compiler, which do not have
copyright and licence notices either.
libstdc++-v3/ChangeLog:
* doc/xml/manual/test.xml: Remove requirement for copyright and
GPL notice in tests.
* doc/html/manual/test.html: Regenerate.
This fixes missing libiconv symbols when libstdc++ is built on a system
that has libiconv installed. If the libiconv headers are found then
libstdc++ depends on libiconv_open etc instead of libc's iconv_open. But
without this fix libstdc++ is not linked to the libiconv library that
provides the definitions of those symbols.
As discussed in PR 93602 this changed means that libstdc++.so.6 might
have an rpath pointing to the location of the libiconv.so library. If
that is not desired, then GCC must be configured to link to a static
libiconv.a instead, using either --with-libiconv-type=static or an
in-tree build of libiconv.
libstdc++-v3/ChangeLog:
PR libstdc++/93602
* doc/xml/manual/prerequisites.xml: Document libiconv
workarounds.
* doc/html/manual/setup.html: Regenerate.
* src/Makefile.am (CXXLINK): Add $(LTLIBICONV).
* src/Makefile.in: Regenerate.
Because this adds a new class template called std::unexpected, we have
to stop declaring the std::unexpected() function (which was deprecated
in C++11 and removed in C++17).
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in: Add new header.
* include/Makefile.am: Likewise.
* include/Makefile.in: Regenerate.
* include/precompiled/stdc++.h: Add new header.
* include/std/version (__cpp_lib_expected): Define.
* libsupc++/exception [__cplusplus > 202002] (unexpected)
(unexpected_handler, set_unexpected): Do not declare for C++23.
* include/std/expected: New file.
* testsuite/20_util/expected/assign.cc: New test.
* testsuite/20_util/expected/cons.cc: New test.
* testsuite/20_util/expected/illformed_neg.cc: New test.
* testsuite/20_util/expected/observers.cc: New test.
* testsuite/20_util/expected/requirements.cc: New test.
* testsuite/20_util/expected/swap.cc: New test.
* testsuite/20_util/expected/synopsis.cc: New test.
* testsuite/20_util/expected/unexpected.cc: New test.
* testsuite/20_util/expected/version.cc: New test.
The SGI STL and pre-1998 drafts of the C++ standard had a default
argument for vector<bool>::insert(iterator, const bool&) which was
remove by N1051. The default argument is still present in libstdc++ for
some reason. There are no tests verifying it as an extension, so I don't
think it has been kept intentionally.
This removes the default argument but adds an overload without the
second parameter, and adds the deprecated attribute to it. This allows
any code using it to keep working (for now) but with a warning.
libstdc++-v3/ChangeLog:
PR libstdc++/104559
* doc/xml/manual/evolution.xml: Document deprecation.
* doc/html/manual/api.html: Regenerate.
* include/bits/stl_bvector.h (insert(const_iterator, const bool&)):
Remove default argument.
(insert(const_iterator)): New overload with deprecated attribute.
* testsuite/23_containers/vector/bool/modifiers/insert/104559.cc:
New test.
Add the <stacktrace> header and a new libstdc++_libbacktrace.a library
that provides the implementation. For now, the new library is only built
if --enable-libstdcxx-backtrace=yes is used. As with the Filesystem TS,
the new library is only provided as a static archive.
libstdc++-v3/ChangeLog:
* acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
* configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
* include/Makefile.am: Add new header.
* include/Makefile.in: Regenerate.
* include/std/stacktrace: New header.
* include/std/version (__cpp_lib_stacktrace): Define.
* Makefile.in: Regenerate.
* config.h.in: Regenerate.
* configure: Regenerate.
* doc/Makefile.in: Regenerate.
* libsupc++/Makefile.in: Regenerate.
* po/Makefile.in: Regenerate.
* python/Makefile.in: Regenerate.
* src/Makefile.am: Regenerate.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.in: Regenerate.
* src/c++17/Makefile.in: Regenerate.
* src/c++20/Makefile.in: Regenerate.
* src/c++98/Makefile.in: Regenerate.
* src/filesystem/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
* src/libbacktrace/Makefile.am: New file.
* src/libbacktrace/Makefile.in: New file.
* src/libbacktrace/backtrace-rename.h: New file.
* src/libbacktrace/backtrace-supported.h.in: New file.
* src/libbacktrace/config.h.in: New file.
* testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
New proc.
* testsuite/20_util/stacktrace/entry.cc: New test.
* testsuite/20_util/stacktrace/synopsis.cc: New test.
* testsuite/20_util/stacktrace/version.cc: New test.
This fixes the --disable-hosted-libstdcxx build so that it works with
--without-headers. Currently you need to also use --with-newlib, which
is confusing for users who aren't actually using newlib.
The AM_PROG_LIBTOOL checks are currently skipped for --with-newlib and
--with-avrlibc builds, with this change they are also skipped when using
--without-headers. It would be nice if using --disable-hosted-libstdcxx
automatically skipped those checks, but GLIBCXX_ENABLE_HOSTED comes too
late to make the AM_PROG_LIBTOOL checks depend on $is_hosted.
The checks for EOF, SEEK_CUR etc. cause the build to fail if there is no
<stdio.h> available. Unlike most headers, which get a HAVE_FOO_H macro,
<stdio.h> is in autoconf's default includes, so every check tries to
include it unconditionally. This change skips those checks for
freestanding builds.
Similarly, the checks for <stdint.h> types done by GCC_HEADER_STDINT try
to include <stdio.h> and fail for --without-headers builds. This change
skips the use of GCC_HEADER_STDINT for freestanding. We can probably
stop using GCC_HEADER_STDINT entirely, since only one file uses the
gstdint.h header that is generated, and that could easily be changed to
use <stdint.h> instead. That can wait for stage 1.
We also need to skip the GLIBCXX_CROSSCONFIG stage if --without-headers
was used, since we don't have any of the functions it deals with.
The end result of the changes above is that it should not be necessary
for a --disable-hosted-libstdcxx --without-headers build to also use
--with-newlib.
Finally, compile libsupc++ with -ffreestanding when --without-headers is
used, so that <stdint.h> will use <gcc-stdint.h> instead of expecting it
to come from libc.
libstdc++-v3/ChangeLog:
PR libstdc++/103866
* acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do
nothing for freestanding builds.
(GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS.
* configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured
with --without-headers. Do not use GCC_HEADER_STDINT for
freestanding builds.
* libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding
for freestanding builds.
* configure: Regenerate.
* Makefile.in: Regenerate.
* doc/Makefile.in: Regenerate.
* include/Makefile.in: Regenerate.
* libsupc++/Makefile.in: Regenerate.
* po/Makefile.in: Regenerate.
* python/Makefile.in: Regenerate.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.in: Regenerate.
* src/c++17/Makefile.in: Regenerate.
* src/c++20/Makefile.in: Regenerate.
* src/c++98/Makefile.in: Regenerate.
* src/filesystem/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
std::condition_variable::wait(unique_lock<mutex>&) is incorrectly marked
noexcept, which means that the __forced_unwind exception used by NPTL
cancellation will terminate the process. It should allow exceptions to
pass through, so that a thread can be cleanly cancelled when waiting on
a condition variable.
The new behaviour is exported as a new version of the symbol, to avoid
an ABI break for existing code linked to the non-throwing definition of
the function. Code linked against older releases will have a reference
to the @GLIBCXX_3.4.11 version, andcode compiled against the new
libstdc++ will get a reference to the @@GLIBCXX_3.4.30 version.
libstdc++-v3/ChangeLog:
PR libstdc++/103382
* config/abi/pre/gnu.ver (GLIBCXX_3.4.11): Do not export old
symbol if .symver renaming is supported.
(GLIBCXX_3.4.30): Export new symbol if .symver renaming is
supported.
* doc/xml/manual/evolution.xml: Document change.
* doc/html/manual/api.html: Regenerate.
* include/bits/std_mutex.h (__condvar::wait, __condvar::wait_until):
Remove noexcept.
* include/std/condition_variable (condition_variable::wait):
Likewise.
* src/c++11/condition_variable.cc (condition_variable::wait):
Likewise.
* src/c++11/compatibility-condvar.cc (__nothrow_wait_cv::wait):
Define nothrow wrapper around std::condition_variable::wait and
export the old symbol as an alias to it.
* testsuite/30_threads/condition_variable/members/103382.cc: New test.
The possible base classes of std::allocator are new_allocator and
malloc_allocator, which both cause a non-reserved name to be declared in
every program that includes the definition of std::allocator. This is
non-conforming.
This change replaces __gnu_cxx::new_allocator with std::__new_allocator
which is identical except for using a reserved name. The non-standard
extension __gnu_cxx::new_allocator is preserved as a thin wrapper over
std::__new_allocator. There is no problem with the extension using a
non-reserved name now that it's not included by default in other
headers.
The same change could be done to __gnu_cxx::malloc_allocator but as it's
not the default configuration it can wait.
libstdc++-v3/ChangeLog:
PR libstdc++/64135
* config/allocator/new_allocator_base.h: Include
<bits/new_allocator.h> instead of <ext/new_allocator.h>.
(__allocator_base): Use std::__new_allocator instead of
__gnu_cxx::new_allocator.
* doc/xml/manual/allocator.xml: Document new default base class
for std::allocator.
* doc/xml/manual/evolution.xml: Likewise.
* doc/html/*: Regenerate.
* include/Makefile.am: Add bits/new_allocator.h.
* include/Makefile.in: Regenerate.
* include/experimental/memory_resource (new_delete_resource):
Use std::__new_allocator instead of __gnu_cxx::new_allocator.
* include/ext/new_allocator.h (new_allocator): Derive from
std::__new_allocator. Move implementation to ...
* include/bits/new_allocator.h: New file.
* testsuite/20_util/allocator/64135.cc: New test.
The bitmap_allocator, __mt_alloc and __pool_alloc extensions are no
longer suitable for use as the base class of std::allocator, because
they have not been updated to meet the C++20 requirements. There is a
patch attached to PR 103340 which addresses that, but more work would be
needed to solve the linking errors that occur when the library is
configured to use them.
Using --enable-libstdcxx-allocator=bitmap wouldn't even bootstrap for
the past few years, and I can't find any gcc-testresults reports using
any of these allocators. This patch removes the configure option to use
these as the std::allocator base class. The allocators are still in the
tree and can be used directly, you just can't configure the library to
use one of them as the base class of std::allocator.
libstdc++-v3/ChangeLog:
PR libstdc++/103340
PR libstdc++/103400
PR libstdc++/103381
* acinclude.m4 (GLIBCXX_ENABLE_ALLOCATOR): Remove mt, bitmap
and pool options.
* configure: Regenerate.
* config/allocator/bitmap_allocator_base.h: Removed.
* config/allocator/mt_allocator_base.h: Removed.
* config/allocator/pool_allocator_base.h: Removed.
* doc/xml/manual/allocator.xml: Update.
* doc/xml/manual/configure.xml: Update.
* doc/xml/manual/evolution.xml: Document removal.
* doc/xml/manual/mt_allocator.xml: Editorial tweaks.
* doc/html/manual/*: Regenerate.
This adds std::__is_constant_evaluated() as a C++11 wrapper for
__builtin_is_constant_evaluated, but just returning false if the
built-in isn't supported by the compiler. This allows us to use it
throughout the library without checking __has_builtin every time.
Some uses in std::vector and std::string can only be constexpr when the
std::is_constant_evaluated() function actually works, so we might as
well guard them with a relevant macro and call that function directly,
rather than the built-in or std::__is_constant_evaluated().
The remaining checks of the __cpp_lib_is_constant_evaluated macro could
now be replaced by checking __cplusplus >= 202002 instead, but there's
no practical difference. We still need some kind of preprocessor check
there anyway.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (PREDEFINED): Change macro name.
* include/bits/allocator.h (allocate, deallocate): Use
std::__is_constant_evaluated() unconditionally, instead of
checking whether std::is_constant_evaluated() (or the built-in)
can be used.
* include/bits/basic_string.h: Check new macro. call
std::is_constant_evaluated() directly in C++20-only code that is
guarded by a suitable macro.
* include/bits/basic_string.tcc: Likewise.
* include/bits/c++config (__is_constant_evaluated): Define.
(_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Replace with ...
(_GLIBCXX_HAVE_IS_CONSTANT_EVALUATED): New macro.
* include/bits/char_traits.h (char_traits): Replace conditional
calls to std::is_constant_evaluated with unconditional calls to
std::__is_constant_evaluated.
* include/bits/cow_string.h: Use new macro.
* include/bits/ranges_algobase.h (__copy_or_move): Replace
conditional calls to std::is_constant_evaluated with unconditional
calls to std::__is_constant_evaluated.
(__copy_or_move_backward, __fill_n_fn): Likewise.
* include/bits/ranges_cmp.h (ranges::less): Likewise.
* include/bits/stl_algobase.h (lexicographical_compare_three_way):
Likewise.
* include/bits/stl_bvector.h: Call std::is_constant_evaluated
directly in C++20-only code that is guarded by a suitable macro.
* include/bits/stl_construct.h (_Construct, _Destroy, _Destroy_n):
Replace is_constant_evaluated with __is_constant_evaluated.
* include/bits/stl_function.h (greater, less, greater_equal)
(less_equal): Replace __builtin_is_constant_evaluated and
__builtin_constant_p with __is_constant_evaluated.
* include/bits/stl_vector.h: Call std::is_constant_evaluated()
in C++20-only code.
* include/debug/helper_functions.h (__check_singular): Use
__is_constant_evaluated instead of built-in, or remove check
entirely.
* include/std/array (operator<=>): Use __is_constant_evaluated
unconditionally.
* include/std/bit (__bit_ceil): Likewise.
* include/std/type_traits (is_constant_evaluated): Define using
'if consteval' if possible.
* include/std/version: Use new macro.
* libsupc++/compare: Use __is_constant_evaluated instead of
__builtin_is_constant_evaluated.
* testsuite/23_containers/array/tuple_interface/get_neg.cc:
Adjust dg-error lines.
These functions have been deprecated since C++11, and were removed in
C++17. The proposal P0323 wants to reuse the name std::unexpected for a
class template, so we will need to stop defining the current function
for C++23 anyway.
This marks them as deprecated for C++11 and up, to warn users they won't
continue to be available. It disables them for C++17 and up, unless the
_GLIBCXX_USE_DEPRECATED macro is defined.
The <unwind-cxx.h> header uses std::unexpected_handler in the public
API, but since that type is the same as std::terminate_handler we can
just use that instead, to avoid warnings about it being deprecated.
libstdc++-v3/ChangeLog:
* doc/xml/manual/evolution.xml: Document deprecations.
* doc/html/*: Regenerate.
* libsupc++/exception (unexpected_handler, unexpected)
(get_unexpected, set_unexpected): Add deprecated attribute.
Do not define without _GLIBCXX_USE_DEPRECATED for C++17 and up.
* libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Disable
deprecated warnings.
* libsupc++/eh_ptr.cc (std::rethrow_exception): Likewise.
* libsupc++/eh_terminate.cc: Likewise.
* libsupc++/eh_throw.cc (__cxa_init_primary_exception):
Likewise.
* libsupc++/unwind-cxx.h (struct __cxa_exception): Use
terminate_handler instead of unexpected_handler.
(struct __cxa_dependent_exception): Likewise.
(__unexpected): Likewise.
* testsuite/18_support/headers/exception/synopsis.cc: Add
dg-warning for deprecated warning.
* testsuite/18_support/exception_ptr/60612-unexpected.cc:
Disable deprecated warnings.
* testsuite/18_support/set_unexpected.cc: Likewise.
* testsuite/18_support/unexpected_handler.cc: Likewise.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/lambda/lambda-eh2.C: Add dg-warning for new
deprecation warnings.
* g++.dg/cpp0x/noexcept06.C: Likewise.
* g++.dg/cpp0x/noexcept07.C: Likewise.
* g++.dg/eh/forced3.C: Likewise.
* g++.dg/eh/unexpected1.C: Likewise.
* g++.old-deja/g++.eh/spec1.C: Likewise.
* g++.old-deja/g++.eh/spec2.C: Likewise.
* g++.old-deja/g++.eh/spec3.C: Likewise.
* g++.old-deja/g++.eh/spec4.C: Likewise.
* g++.old-deja/g++.mike/eh33.C: Likewise.
* g++.old-deja/g++.mike/eh34.C: Likewise.
* g++.old-deja/g++.mike/eh50.C: Likewise.
* g++.old-deja/g++.mike/eh51.C: Likewise.
The man pages generated by Doxygen show internal header files, not the
standard headers that users actually care about. The run_doxygen script
uses the doc/doxygen/stdheader.cc program to address that, but it
doesn't work. It only tries to fix headers with underscores in the
names, which doesn't work for <bits/align.h> or <bits/fsteam.tcc>. It
isn't prepared for the strings like "bits/stl_set\&.h" that are produced
by Doxygen. It doesn't know about many headers that have been added
since it was written. And the run_doxygen script fails to use its output
correctly to modify the man pages. Additionally, run_doxygen doesn't
know about new nested namespaces like std::filesystem and std::ranges.
This change rewrites the stdheader.cc program to do a better job of
finding the right header. The run_doxygen script now uses the just-built
compiler to build stdheader.cc and actually uses its output. And the
script now knows about other nested namespaces.
The stdheader.cc program might be unnecessary if we consistently used
@headername tags in the Doxygen comments, but we don't (and probably
never will).
A problem that remains after this change is that all the free function
defined in namespace std get dumped into a single man page for std(3),
without detailed descriptions. We don't even install that std(3) page,
but remove it before installation. That means only classes are
documented in man pages (including many internal ones that should not be
publicly documented such as _Deque_base and _Tuple_impl).
libstdc++-v3/ChangeLog:
* doc/doxygen/stdheader.cc: Refactor. Use C++23. Add new
headers.
* scripts/run_doxygen: Fix post-processing of #include
directives in man pages. Use new xg++ to compile helper program.
In r12-826 I tried to remove some redundant steps from the doxygen
build, but they are needed when configure is run as a relative path. The
use of pwd is to resolve the relative path to an absolute one.
libstdc++-v3/ChangeLog:
* doc/Makefile.am (stamp-html-doxygen, stamp-html-doxygen)
(stamp-latex-doxygen, stamp-man-doxygen): Fix recipes for
relative ${top_srcdir}.
* doc/Makefile.in: Regenerate.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* doc/xml/manual/using.xml: Generalize to apply to more than
just -std=c++11.
* doc/html/manual/using_macros.html: Regenerate.
This adds my new SHOW_HEADERFILE option, and removes some obsolete
options.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in: Update to Doxygen 1.9.2
We should document the status of this unimplemented feature.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/100139
* doc/xml/manual/status_cxx2020.xml: Add P1739R4 to status table.
* doc/html/manual/status.html: Regenerate.
The std::random_shuffle algorithm was removed in C++14 (without
deprecation). This adds the deprecated attribute for C++14 and later, so
that users are warned they should not be using it in those dialects.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* doc/xml/manual/evolution.xml: Document deprecation.
* doc/html/*: Regenerate.
* include/bits/c++config (_GLIBCXX14_DEPRECATED): Define.
(_GLIBCXX14_DEPRECATED_SUGGEST): Define.
* include/bits/stl_algo.h (random_shuffle): Deprecate for C++14
and later.
* testsuite/25_algorithms/headers/algorithm/synopsis.cc: Adjust
for C++11 and C++14 changes to std::random_shuffle and
std::shuffle.
* testsuite/25_algorithms/random_shuffle/1.cc: Add options to
use deprecated algorithms.
* testsuite/25_algorithms/random_shuffle/59603.cc: Likewise.
* testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise.
* testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
Likewise.
* testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
Likewise.
As the PR points out, we removed the debug version of std::array without
any period of deprecation. Although std::array contains all the actual
debug checks now, removing the <debug/arrray> header breaks any code
that was using that explicitly. The manual still lists doing that as
supported.
This restores the <debug/array> header, but simply defines
__gnu_debug::array as an alias for std::array, and declares the alias
with the deprecated attribute. The docs are updated to match.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/100682
* doc/xml/manual/debug_mode.xml: Update documentation about
debug capability of std::array.
* doc/html/*: Regenerate.
* include/debug/array: New file.
This attempst to improve the doxygen output to work around what seems to
be some bugs in doxygen (issues 8635 and 8638).
The @addtogroup command doesn't work for entities inside a nested
namespace (see 8635) so we need to close and reopen groups on entering
and elaving nested namespaces. This fixes the problem that
chrono::duration and chrono::time_point were not documented in the
"Time" documentation group. I am unable to make the path classes appear
as part of their relevant groups (File System and Filesystem TS), nor
the contents of <exception> or <system_error>. I have made some minor
improvements to the docs for those types, including starting to address
PR 97001 by adding @since to the doxygen comments.
This change also excludes the <experimental/bits/net.h> header from
Doxygen processing, so we don't get an unwanted "Networking-ts" group
in the documentation.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* doc/doxygen/doxygroups.cc: Fix docs for std::literals.
* doc/doxygen/user.cfg.in: Exclude the Networking TS header.
Add some more predefined macros.
* include/bits/fs_fwd.h: Move @addtogroup commands inside
namespaces. Add better documentation.
* include/bits/fs_path.h: Likewise.
* include/experimental/bits/fs_fwd.h: Likewise.
* include/experimental/bits/fs_path.h: Likewise.
* include/ext/throw_allocator.h: Fix typo and improve docs.
* include/std/chrono: Move @addtogroup commands.
* include/std/system_error: Move @addtogroup commands.
* libsupc++/exception: Improve documentation.
* libsupc++/exception.h: Add @since documentation.
This defines some new Doxygen groups for C++17 variable templates and
for the contents of <experimental/type_traits>. By documenting the group
as a whole and adding each template to a group we don't need to document
them individually.
Also mark more internals with "@cond undocumented" so that Doxygen
ignores them by default. Also make Doxygen process <experimental/simd>.
For some reason, many of the class templates in <type_traits> do not
appear in the "Metaprogramming" group. For example, add_cv,
remove_extent, and all the is_xxx_constructible and is_xxx_assignable
traits. For some reason, Doxygen doesn't include them in the group,
despite doing it correctly for other traits in the same header.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
PR libstdc++/101258
* doc/doxygen/user.cfg.in (INPUT): Add <experimental/simd>.
(COLS_IN_ALPHA_INDEX): Remove obsolete tag.
(PREDEFINED): Add/fix some more macros that need to be expanded.
* include/bits/random.h: Stop Doxygen from documenting internal
implementation details.
* include/bits/random.tcc: Likewise.
* include/bits/this_thread_sleep.h: Fix @file name.
* include/experimental/bits/simd.h: Add to Doxygen group. Do not
document internal implementation details.
* include/experimental/bits/simd_detail.h: Do not document
internal implementation details.
* include/experimental/simd: Define Doxygen groups.
* include/experimental/type_traits: Improve documentation for
the header file. Define groups. Use @since commands.
* include/std/scoped_allocator (scoped_allocator_adaptor): Move
declaration before undocumented region.
* include/std/type_traits (true_type, false_type): Use using
declaration instead of typedef.
(is_invocable_v, is_nothrow_invocable_v, is_invocable_r_v)
(is_nothrow_invocable_r_v): Move definitions next to other C++17
variable templates.
Do not document internal implementation details. Move misplaced
group-end command. Define group for variable templates.
* include/std/variant: Do not document internal implementation
details.
* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
line number.
For C++11 std::ws changed to be an unformatted input function, meaning
it constructs a sentry and sets badbit on exceptions.
libstdc++-v3/ChangeLog:
* doc/xml/manual/intro.xml: Document LWG 415 change.
* doc/html/manual/bugs.html: Regenerate.
* include/bits/istream.tcc (ws): Create sentry and catch
exceptions.
* testsuite/27_io/basic_istream/ws/char/lwg415.cc: New test.
* testsuite/27_io/basic_istream/ws/wchar_t/lwg415.cc: New test.
The original link redirects to a very generic page that advertises
lots of tools and other things, just not this.
libstdc++-v3/ChangeLog:
2021-05-31 Gerald Pfeifer <gerald@pfeifer.com>
* doc/xml/manual/abi.xml: Remove dead reference to "Intel
Compilers for Linux: Compatibility with GNU Compilers" article.
* doc/html/manual/abi.html: Regenerate.
This allows the Doxygen PDF to be built using lualatex instead of
pdflatex, which solves a problem with pdflatex running out of memory
sometimes. This is done by adding a --latex_cmd option to the
run_doxygen script, which then sets the specified command in the
generated user.cfg file used by Doxygen. The makefile is adjusted to
pass --latex_cmd=$(LATEX_CMD) to the script, so using running make with
LATEX_CMD=lualatex will override the default.
Additionally, this does some refactoring of the doc/Makefile.am rules
and the run_doxygen script.
libstdc++-v3/ChangeLog:
* doc/Makefile.am: Simplify doxygen recipes and use --latex_cmd.
* doc/Makefile.in: Regenerate.
* doc/doxygen/user.cfg.in (LATEX_CMD_NAME): Add placeholder
value.
* scripts/run_doxygen (print_usage): Always print to stdout and
do not exit.
(fail): New function for exiting on error.
(parse_options): Handle --latex_cmd. Do not treat --help the
same as errors. Simplify handling of required arguments.
Use '@' to prevent Make from echoing the recipe, so that users don't see
this every time:
if [ -f ${doxygen_pdf} ]; then
mv ${doxygen_pdf} ${api_pdf} ;
echo ":: PDF file is ${api_pdf}";
else
echo "... error";
grep -F 'LaTeX Error' ${doxygen_outdir}/latex/refman.log;
grep -F 'TeX capacity exceeded, sorry' ${doxygen_outdir}/latex/refman.log;
exit 12;
fi
The presence of the "error" strings in the output makes it look like an
error happened. By suppressing the echoing user's will only see "error"
if the 'else' branch is taken.
libstdc++-v3/ChangeLog:
* doc/Makefile.am (stamp-pdf-doxygen): Improve comment about
dealing with errors. Use '@' to prevent shell command being
echoed.
* doc/Makefile.in: Regenerate.
The libstdc++-v3 manual doesn't need to document how to use its
predecessors.
libstdc++-v3/ChangeLog:
* doc/xml/manual/backwards_compatibility.xml: Remove porting
notes for libg++ and libstdc++-v2, and bibliography.
* doc/html/*: Regenerated.
If pdflatex runs out of memory the build fails with no hint what's
wrong. This adds another grep command to the makefile so that an
out-of-memory error will result in more information being shown.
As suggested in https://bugzilla.redhat.com/show_bug.cgi?id=1841056
using lualatex can be used as a workaround.
libstdc++-v3/ChangeLog:
* doc/Makefile.am (stamp-pdf-doxygen): Also grep for
out-of-memory error in log file.
* doc/Makefile.in: Regenerate.
The LLVM project renamed their default branch to 'main'.
libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL.
* doc/html/manual/status.html: Regenerate.
The _wrename function won't overwrite an existing file, so use
MoveFileEx instead. That allows renaming directories over files, which
POSIX doesn't allow, so check for that case explicitly and report an
error.
Also document the deviation from the expected behaviour, and add a test
for filesystem::rename which was previously missing.
The Filesystem TS experimental::filesystem::rename doesn't have that
extra code to handle directories correctly, so the relevant parts of the
new test are not run on Windows.
libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx2014.xml: Document implementation
specific properties of std::experimental::filesystem::rename.
* doc/xml/manual/status_cxx2017.xml: Document implementation
specific properties of std::filesystem::rename.
* doc/html/*: Regenerate.
* src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
for directories on Windows.
* src/filesystem/ops-common.h (__gnu_posix::rename): Use
MoveFileExW on Windows.
* testsuite/27_io/filesystem/operations/rename.cc: New test.
* testsuite/experimental/filesystem/operations/rename.cc: New test.
Adds <experimental/simd>.
This implements the simd and simd_mask class templates via
[[gnu::vector_size(N)]] data members. It implements overloads for all of
<cmath> for simd. Explicit vectorization of the <cmath> functions is not
finished.
The majority of functions are marked as [[gnu::always_inline]] to enable
quasi-ODR-conforming linking of TUs with different -m flags.
Performance optimization was done for x86_64. ARM, Aarch64, and POWER
rely on the compiler to recognize reduction, conversion, and shuffle
patterns.
Besides verification using many different machine flages, the code was
also verified with different fast-math flags.
libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx2017.xml: Add implementation status
of the Parallelism TS 2. Document implementation-defined types
and behavior.
* include/Makefile.am: Add new headers.
* include/Makefile.in: Regenerate.
* include/experimental/simd: New file. New header for
Parallelism TS 2.
* include/experimental/bits/numeric_traits.h: New file.
Implementation of P1841R1 using internal naming. Addition of
missing IEC559 functionality query.
* include/experimental/bits/simd.h: New file. Definition of the
public simd interfaces and general implementation helpers.
* include/experimental/bits/simd_builtin.h: New file.
Implementation of the _VecBuiltin simd_abi.
* include/experimental/bits/simd_converter.h: New file. Generic
simd conversions.
* include/experimental/bits/simd_detail.h: New file. Internal
macros for the simd implementation.
* include/experimental/bits/simd_fixed_size.h: New file. Simd
fixed_size ABI specific implementations.
* include/experimental/bits/simd_math.h: New file. Math
overloads for simd.
* include/experimental/bits/simd_neon.h: New file. Simd NEON
specific implementations.
* include/experimental/bits/simd_ppc.h: New file. Implement bit
shifts to avoid invalid results for integral types smaller than
int.
* include/experimental/bits/simd_scalar.h: New file. Simd scalar
ABI specific implementations.
* include/experimental/bits/simd_x86.h: New file. Simd x86
specific implementations.
* include/experimental/bits/simd_x86_conversions.h: New file.
x86 specific conversion optimizations. The conversion patterns
work around missing conversion patterns in the compiler and
should be removed as soon as PR85048 is resolved.
* testsuite/experimental/simd/standard_abi_usable.cc: New file.
Test that all (not all fixed_size<N>, though) standard simd and
simd_mask types are usable.
* testsuite/experimental/simd/standard_abi_usable_2.cc: New
file. As above but with -ffast-math.
* testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
from the standard test loop. Instead use
check_vect_support_and_set_flags to build simd tests with the
relevant machine flags.
This header was removed recently, so Doxygen shouldn't try to process
it.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
libstdc++-v3:
2020-12-26 Gerald Pfeifer <gerald@pfeifer.com>
* doc/xml/manual/abi.xml: Update link to Intel's compatibility
with GNU compilers document.
* doc/html/manual/abi.html: Regenerate.
This adds support for the new __ieee128 long double format on
powerpc64le targets.
Most of the complexity comes from wanting a single libstdc++.so library
that contains the symbols needed by code compiled with both
-mabi=ibmlongdouble and -mabi=ieeelongdouble (and not forgetting
-mlong-double-64 as well!)
In a few places this just requires an extra overload, for example
std::from_chars has to be overloaded for both forms of long double.
That can be done in a single translation unit that defines overloads
for 'long double' and also '__ieee128', so that user code including
<charconv> will be able to link to a definition for either type of long
double. Those are the easy cases.
The difficult parts are (as for the std::string ABI transition) the I/O
and locale facets. In order to be able to write either form of long
double to an ostream such as std::cout we need the locale to contain a
std::num_put facet that can handle both forms. The same approach is
taken as was already done for supporting 64-bit long double and 128-bit
long double: adding extra overloads of do_put to the facet class. On
targets where the new long double code is enabled, the facets that are
registered in the locale at program startup have additional overloads so
that they can work with any long double type. Where this fails to work
is if user code installs its own facet, which will probably not have the
additional overloads and so will only be able to output one or the other
type. In practice the number of users expecting to be able to use their
own locale facets in code using a mix of -mabi=ibmlongdouble and
-mabi=ieeelongdouble is probably close to zero.
libstdc++-v3/ChangeLog:
* Makefile.in: Regenerate.
* config.h.in: Regenerate.
* config/abi/pre/gnu.ver: Make patterns less greedy.
* config/os/gnu-linux/ldbl-ieee128-extra.ver: New file with patterns
for IEEE128 long double symbols.
* configure: Regenerate.
* configure.ac: Enable alternative 128-bit long double format on
powerpc64*-*-linux*.
* doc/Makefile.in: Regenerate.
* fragment.am: Regenerate.
* include/Makefile.am: Set _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define inline namespace for new long
double symbols. Don't define _GLIBCXX_USE_FLOAT128 when it's the
same type as long double.
* include/bits/locale_classes.h [_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT]
(locale::_Impl::_M_init_extra_ldbl128): Declare new member function.
* include/bits/locale_facets.h (_GLIBCXX_NUM_FACETS): Simplify by
only counting narrow character facets.
(_GLIBCXX_NUM_CXX11_FACETS): Likewise.
(_GLIBCXX_NUM_LBDL_ALT128_FACETS): New.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT] (num_get::__do_get): Define
vtable placeholder for __ibm128 long double type.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(num_get::__do_get): Declare vtable placeholder for __ibm128 long
double type.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(num_put::__do_put): Likewise.
* include/bits/locale_facets.tcc
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(num_get::__do_get, num_put::__do_put): Define.
* include/bits/locale_facets_nonio.h
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(money_get::__do_get): Declare vtable placeholder for __ibm128 long
double type.
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(money_put::__do_put): Likewise.
* include/bits/locale_facets_nonio.tcc
[_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT && __LONG_DOUBLE_IEEE128__]
(money_get::__do_get, money_put::__do_put): Define.
* include/ext/numeric_traits.h [_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT]
(__numeric_traits<__ibm128>, __numeric_traits<__ieee128>): Define.
* libsupc++/Makefile.in: Regenerate.
* po/Makefile.in: Regenerate.
* python/Makefile.in: Regenerate.
* src/Makefile.am: Add compatibility-ldbl-alt128.cc and
compatibility-ldbl-alt128-cxx11.cc sources and recipes for objects.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.in: Regenerate.
* src/c++11/compatibility-ldbl-alt128-cxx11.cc: New file defining
symbols using the old 128-bit long double format, for the cxx11 ABI.
* src/c++11/compatibility-ldbl-alt128.cc: Likewise, for the
gcc4-compatible ABI.
* src/c++11/compatibility-ldbl-facets-aliases.h: New header for long
double compat aliases.
* src/c++11/cow-locale_init.cc: Add comment.
* src/c++11/cxx11-locale-inst.cc: Define C and C_is_char
unconditionally.
* src/c++11/cxx11-wlocale-inst.cc: Add sanity check. Include
locale-inst.cc directly, not via cxx11-locale-inst.cc.
* src/c++11/locale-inst-monetary.h: New header for monetary
category instantiations.
* src/c++11/locale-inst-numeric.h: New header for numeric category
instantiations.
* src/c++11/locale-inst.cc: Include new headers for monetary,
numeric, and long double definitions.
* src/c++11/wlocale-inst.cc: Remove long double compat aliases that
are defined in new header now.
* src/c++17/Makefile.am: Use -mabi=ibmlongdouble for
floating_from_chars.cc.
* src/c++17/Makefile.in: Regenerate.
* src/c++17/floating_from_chars.cc (from_chars_impl): Add
if-constexpr branch for __ieee128.
(from_chars): Overload for __ieee128.
* src/c++20/Makefile.in: Regenerate.
* src/c++98/Makefile.in: Regenerate.
* src/c++98/locale_init.cc (num_facets): Adjust calculation.
(locale::_Impl::_Impl(size_t)): Call _M_init_extra_ldbl128.
* src/c++98/localename.cc (num_facets): Adjust calculation.
(locale::_Impl::_Impl(const char*, size_t)): Call
_M_init_extra_ldbl128.
* src/filesystem/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
* testsuite/util/testsuite_abi.cc: Add new symbol versions.
Allow new symbols to be added to GLIBCXX_IEEE128_3.4.29 and
CXXABI_IEEE128_1.3.13 too.
* testsuite/26_numerics/complex/abi_tag.cc: Add u9__ieee128 to
regex matching expected symbols.
This doesn't define a new _GLIBCXX_HAVE_BUILTIN_SOURCE_LOCATION macro.
because using __has_builtin(__builtin_source_location) is sufficient.
Currently only GCC supports it, but if/when Clang and Intel add it the
__has_builtin check should for them too.
Co-authored-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (INPUT): Add <source_location>.
* include/Makefile.am: Add <source_location>.
* include/Makefile.in: Regenerate.
* include/std/version (__cpp_lib_source_location): Define.
* include/std/source_location: New file.
* testsuite/18_support/source_location/1.cc: New test.
* testsuite/18_support/source_location/consteval.cc: New test.
* testsuite/18_support/source_location/srcloc.h: New test.
* testsuite/18_support/source_location/version.cc: New test.
This doesn't actually have any effect unless you also change the
predefined value of __cplusplus, as it's currently 201703L. But if
somebody does want to do that, the new headers will get processed now.
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (INPUT): Add <latch> and <semaphore>.
I recently noticed that neither libposix4 nor librt are needed on
Solaris 11 any longer:
* libposix4 was renamed to librt in Solaris 7 back in 1998.
* librt was folded into libc in the OpenSolaris timeframe, leaving librt
only as a filter on libc. Thus, it's no longer needed on either
Solaris 11 or Illumos.
The following patch removes both uses. At the same time, Ada's use of
libthread has gone: it was folded into libc in Solaris 10 already.
TIME_LIBRARY and friends in g++ are likewise removed: Solaris was the
only user.
Bootstrapped without regressions on i386-pc-solaris2.11,
sparc-sun-solaris2.11, and x86_64-pc-linux-gnu.
2020-11-16 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
gcc/cp:
* g++spec.c (TIMELIB, TIME_LIBRARY): Remove.
(lang_specific_driver): Remove TIME_LIBRARY handling.
gcc:
* config/sol2.h (TIME_LIBRARY): Remove.
libstdc++-v3:
* acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Remove libposix4
references.
<solaris*>: Don't use -lrt any longer.
* configure: Regenerate.
* doc/xml/manual/configure.xml (--enable-libstdcxx-time=OPTION):
Remove libposix4 reference.
gcc/ada:
* Makefile.rtl <sparc*-sun-solaris*> (THREADSLIB): Remove.
(MISCLIB): Remove -lposix4.
<*86-*-solaris2*>: Likewise.
* libgnarl/s-osinte__solaris.ads (System.OS_Interface): Remove
-lposix4 -lthread.
The name __deref is defined as a macro by Windows headers.
This renames the __deref() helper function to __ref. It doesn't actually
dereference an iterator. it just has the same type as the iterator's
reference type.
libstdc++-v3/ChangeLog:
PR libstdc++/97362
* doc/html/manual/source_code_style.html: Regenerate.
* doc/xml/manual/appendix_contributing.xml: Add __deref to
BADNAMES.
* include/debug/functions.h (_Irreflexive_checker::__deref):
Rename to __ref.
* testsuite/17_intro/badnames.cc: Check __deref.
Remove ability for reserve(n) to reduce a string's capacity. Add a new
reserve() overload that makes a shrink-to-fit request, and make
shrink_to_fit() use that.
libstdc++-v3/ChangeLog:
2020-07-30 Andrew Luo <andrewluotechnologies@outlook.com>
Jonathan Wakely <jwakely@redhat.com>
* config/abi/pre/gnu.ver (GLIBCXX_3.4): Use less greedy
patterns for basic_string members.
(GLIBCXX_3.4.29): Export new basic_string::reserve symbols.
* doc/xml/manual/status_cxx2020.xml: Update P0966 status.
* include/bits/basic_string.h (shrink_to_fit()): Call reserve().
(reserve(size_type)): Remove default argument.
(reserve()): Declare new overload.
[!_GLIBCXX_USE_CXX11_ABI] (shrink_to_fit, reserve): Likewise.
* include/bits/basic_string.tcc (reserve(size_type)): Remove
support for shrinking capacity.
(reserve()): Perform shrink-to-fit operation.
[!_GLIBCXX_USE_CXX11_ABI] (reserve): Likewise.
* testsuite/21_strings/basic_string/capacity/1.cc: Adjust to
reflect new behavior.
* testsuite/21_strings/basic_string/capacity/char/1.cc:
Likewise.
* testsuite/21_strings/basic_string/capacity/char/18654.cc:
Likewise.
* testsuite/21_strings/basic_string/capacity/char/2.cc:
Likewise.
* testsuite/21_strings/basic_string/capacity/wchar_t/1.cc:
Likewise.
* testsuite/21_strings/basic_string/capacity/wchar_t/18654.cc:
Likewise.
* testsuite/21_strings/basic_string/capacity/wchar_t/2.cc:
Likewise.
libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx2017.xml: Replace oneAPI DPC++ link
with LLVM repo for PSTL.
* doc/html/manual/status.html: Regenerate.
libstdc++-v3:
2020-07-31 Gerald Pfeifer <gerald@pfeifer.com>
* doc/xml/manual/status_cxx2017.xml: ParallelSTL is now part
of oneAPI DPC++ Library on Github.
* doc/html/manual/status.html: Regenerate.
The <xref> element creates the link text automatically from the link
target, rather than using the text node child of the element. This can
be changed by using an endterm attribute, but it's simpler to just use
the <link> element instead.
* doc/xml/manual/containers.xml: Replace <xref> with <link>.
* doc/xml/manual/evolution.xml: Likewise.
* doc/html/manual/api.html: Regenerate.
* doc/html/manual/containers.html: Regenerate.
There is a stray change (introducing a bogus line at the top) that
came via 2babbb6760c43bcd803a5e168ef5ecb0be8a5121; remove that again.
* doc/xml/manual/policy_data_structures_biblio.xml: Remove
stray change.
The previous URL to an entry in the wayback machine now redirects to a
page saying "SGI.com Tech Archive Resources now retired" so use an older
entry from the archive.
* doc/xml/faq.xml: Use working link for SGI STL FAQ.
* doc/html/*: Regenerate.
This reorganises the C++20 status table, grouping the proposals by
category. It also adds more proposals, and documents all the feature
test macros for C++20 library changes.
* doc/xml/manual/status_cxx2020.xml: Update C++20 status table.
* doc/html/*: Regenerate.
This adds a full table of contents for the C++14 and C++17 standards,
with status for each part.
For C++14 the list of proposals is removed, as it adds little value now
that everything is supported. For C++17 the table of proposals is
retained, because it documents he feature test macros for the features.
* doc/Makefile.am (xml_sources_manual): Add missing XML files.
* doc/Makefile.in: Regenerate.
* doc/xml/manual/status_cxx1998.xml: Refer to "this section" instead
of "this page".
* doc/xml/manual/status_cxx2011.xml: Formatting and other corrections
to the C++11 status table.
* doc/xml/manual/status_cxx2014.xml: Replace list of C++14 feature
proposals with table matching contents of the C++14 standard.
* doc/xml/manual/status_cxx2017.xml: Add table matching contents of
the C++17 standard.
* doc/html/*: Regenerate.
* doc/xml/manual/appendix_contributing.xml: Refer to Git
documentation instead of Subversion. Switch to https.
* doc/html/manual/appendix_contributing.html: Regenerate.
Clean up references to SVN in in the GCC docs, redirecting to Git
documentation as appropriate.
Where references to "the source code repository" rather than a
specific VCS make sense, I have used them. You might, after
all, change VCSes again someday.
I have not modified either generated HTML files nor maintainer scripts.
These changes should be complete with repect to the documentation tree.
2020-01-19 Eric S. Raymond <esr@thyrsus.com>
gcc/
* doc/contribute.texi: Update for SVN -> Git transition.
* doc/install.texi: Likewise.
libstdc++-v3
* doc/xml/faq.xml: Update for SVN -> Git transition.
* doc/xml/manual/appendix_contributing.xml: Likewise.
* doc/xml/manual/status_cxx1998.xml: Likewise.
* 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_cxxtr1.xml: Likewise.
* doc/xml/manual/status_cxxtr24733.xml: Likewise.
The FTP protocol is getting long in the tooth, and we should emphasize
HTTPS where that is available. This patch changes various gcc.gnu.org
URL's to instead use HTTPS.
For instance, kernel.org shut down FTP access in 2017, with the
explanation:
- The protocol is inefficient and requires adding awkward kludges to
firewalls and load-balancing daemons
- FTP servers have no support for caching or accelerators, which has
significant performance impacts
- Most software implementations have stagnated and see infrequent
updates
ChangeLog:
2019-11-20 Janne Blomqvist <jb@gcc.gnu.org>
* configure.ac: Use https for gcc.gnu.org.
* configure: Regenerated.
gcc/ChangeLog:
2019-11-20 Janne Blomqvist <jb@gcc.gnu.org>
* configure.ac: Use https for gcc.gnu.org.
* configure: Regenerated.
* doc/install.texi: Use https for gcc.gnu.org.
* doc/sourcebuild.texi: Likewise.
gcc/testsuite/ChangeLog:
2019-11-20 Janne Blomqvist <jb@gcc.gnu.org>
* README: Use https for gcc.gnu.org.
libstdc++-v3/ChangeLog:
2019-11-20 Janne Blomqvist <jb@gcc.gnu.org>
* doc/html/api.html: Use https for gcc.gnu.org.
* doc/xml/api.xml: Likewise.
maintainer-scripts/ChangeLog:
2019-11-20 Janne Blomqvist <jb@gcc.gnu.org>
* gcc_release: Use https for gcc.gnu.org.
From-SVN: r278526
Also process it with Doxygen.
* doc/doxygen/user.cfg.in (INPUT): Add <compare> header.
* include/precompiled/stdc++.h: Include <compare> header.
From-SVN: r277944
The implementation is already complete but this updates the docs and
adds tests for the feature test macro.
* doc/xml/manual/status_cxx2020.xml: Update status.
* doc/html/*: Regenerate.
* testsuite/std/concepts/1.cc: New test.
* testsuite/std/concepts/2.cc: New test.
From-SVN: r277371
This won't do anything by default, because __cplusplus is set to 201402L
when Doxygen runs. If/when that changes, these headers should be
processed.
* doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
From-SVN: r277121
Also remove the creation of the html/ext sub-directory, which has been
unused since revision r245258.
* doc/Makefile.am (doc-html-docbook-regenerate): New target.
(${docbook_outdir}/html): Do not create unused 'html/ext' directory.
* doc/Makefile.in: Regenerate.
* doc/xml/manual/documentation_hacking.xml: Document new target.
* doc/html/*: Regenerate.
From-SVN: r276695
This reverts "Remove broken URL from libstdc++ manual" by restoring the
link, but using an archived copy from the Wayback Machine.
* doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
* doc/html/*: Regenerate.
From-SVN: r276693
The URL for the "What Are Allocators Good For?" article has been a
recurring source of problems. It moved from the C/C++ Users Journal
website to the Dr Dobbs site after CUJ shut down, and the original
domain changed hands, leaving old links pointing to nefarious sites.
Now the URL to the copy on drdobbs.com no longer works either and I
can't find a (legal) copy of the article online. The simplest solution
is to remove the URL.
* doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
* doc/html/*: Regenerate.
From-SVN: r275398
* doc/xml/manual/documentation_hacking.xml: Fix broken reference
to the Doxygen manual. Avoid a "here" link on the way.
Fix another broken link to Doxygen docblocks.
From-SVN: r273852
In previous standards it is undefined for a container and its allocator
to have a different value_type. Libstdc++ has traditionally allowed it
as an extension, automatically rebinding the allocator to the
container's value_type. Since GCC 8.1 that extension has been disabled
for C++11 and later when __STRICT_ANSI__ is defined (i.e. for
-std=c++11, -std=c++14, -std=c++17 and -std=c++2a).
Since the acceptance of P1463R1 into the C++2a draft an incorrect
allocator::value_type now requires a diagnostic. This patch implements
that by enabling the static_assert for -std=gnu++2a as well.
* doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
* include/bits/forward_list.h [__cplusplus > 201703]: Enable
allocator::value_type assertion for C++2a.
* include/bits/hashtable.h: Likewise.
* include/bits/stl_deque.h: Likewise.
* include/bits/stl_list.h: Likewise.
* include/bits/stl_map.h: Likewise.
* include/bits/stl_multimap.h: Likewise.
* include/bits/stl_multiset.h: Likewise.
* include/bits/stl_set.h: Likewise.
* include/bits/stl_vector.h: Likewise.
* testsuite/23_containers/deque/48101-3_neg.cc: New test.
* testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
* testsuite/23_containers/list/48101-3_neg.cc: New test.
* testsuite/23_containers/map/48101-3_neg.cc: New test.
* testsuite/23_containers/multimap/48101-3_neg.cc: New test.
* testsuite/23_containers/multiset/48101-3_neg.cc: New test.
* testsuite/23_containers/set/48101-3_neg.cc: New test.
* testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
* testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
* testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
* testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
* testsuite/23_containers/vector/48101-3_neg.cc: New test.
From-SVN: r271866
