Using std::chrono::abs is only valid if numeric_limits<rep>::is_signed
is true, so using it unconditionally made it ill-formed to format a
duration with an unsigned rep.
The duration formatter might as well negate the duration itself instead
of using chrono::abs, because it already needs to check for a negative
value.
libstdc++-v3/ChangeLog:
PR libstdc++/115668
* include/bits/chrono_io.h (formatter<duration<R,P, C>::format):
Do not use chrono::abs.
* testsuite/20_util/duration/io.cc: Check formatting a duration
with unsigned rep.
(cherry picked from commit dafa750c8a6f0a088677871bfaad054881737ab1)
For this backport to the release branch, the links to the git repo refer
to the branch.
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.
(cherry picked from commit 9d8021d1875677286c3dde90dfed2aca864edad0)
The newly-added testcase overrides the default dg-do action set by
check_vect_support_and_set_flags (in libstdc++-dg/conformance.exp), so
it attempts to run the test even if runtime vector support is not
available.
Remove the explicit dg-do directive, so that the default is honored,
and the test is run if vector support is found, and only compiled
otherwise.
for libstdc++-v3/ChangeLog
PR libstdc++/115454
* testsuite/experimental/simd/pr115454_find_last_set.cc: Defer
to check_vect_support_and_set_flags's default dg-do action.
(cherry picked from commit 95faa1bea7bdc7f92fcccb3543bfcbc8184c5e5b)
When I tried to make the release branch versions of these docs refer to
the release branch instead of "mainline GCC", for some reason I left the
text "not any particular release" there. That's just confusing, because
the docs are for a particular release, the latest on that branch. Remove
that confusing text in several places.
libstdc++-v3/ChangeLog:
* doc/xml/manual/status_cxx1998.xml: Remove confusing "not in
any particular release" text.
* 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.
* doc/html/manual/status.html: Regenerate.
* Running a test compiled with AVX512 instructions requires
avx512f_runtime not just avx512f.
* The 'reduce2' test violated an invariant of fixed_size_simd_mask and
thus failed on all targets without 16-Byte vector builtins enabled (in
bits/simd.h).
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
PR libstdc++/115575
* testsuite/experimental/simd/pr115454_find_last_set.cc: Require
avx512f_runtime. Don't memcpy fixed_size masks.
(cherry picked from commit 77f321435b4ac37992c2ed6737ca0caa1dd50551)
With the change to the AVX512 find_last_set implementation, the change
to AVX512 operator!= is unnecessary. However, the latter was not
producing optimal code and unnecessarily set the padding bits. In
theory, the compiler could determine that with the new !=
implementation, the bit operation for clearing the padding bits is a
no-op and can be elided.
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
PR libstdc++/115454
* include/experimental/bits/simd_x86.h (_S_not_equal_to): Use
neq comparison instead of bitwise negation after eq.
(_S_find_last_set): Clear unused high bits before computing
bit_width.
* testsuite/experimental/simd/pr115454_find_last_set.cc: New
test.
(cherry picked from commit 1340ddea0158de3f49aeb75b4013e5fc313ff6f4)
Thanks to Jérôme Duval for noticing this.
libstdc++-v3/ChangeLog:
* libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Fix declaration of
posix_memalign.
(cherry picked from commit 161efd677458f20d13ee1018a4d5e3964febd508)
The special case for Clang in the trait producing a signed integer type
lead to the trait returning 'char' where it should have been 'signed
char'. This workaround was introduced because on Clang the return type
of vector compares was not convertible to '_SimdWrapper<
__int_for_sizeof_t<...' unless '__int_for_sizeof_t<char>' was an alias
for 'char'. In order to not rewrite the complete mask type code (there
is code scattered around the implementation assuming signed integers),
this needs to be 'signed char'; so the special case for Clang needs to
be removed.
The conversion issue is now solved in _SimdWrapper, which now
additionally allows conversion from vector types with compatible
integral type.
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
PR libstdc++/115308
* include/experimental/bits/simd.h (__int_for_sizeof): Remove
special cases for __clang__.
(_SimdWrapper): Change constructor overload set to allow
conversion from vector types with integral conversions via bit
reinterpretation.
(cherry picked from commit 8e36cf4c5c9140915d0019999db132a900b48037)
This resolves a regression on i686 that was introduced with
r15-429-gfb1649f8b4ad50.
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
PR libstdc++/115247
* include/experimental/bits/simd.h (__as_vector): Don't use
vector_size(8) on __i386__.
(__vec_shuffle): Never return MMX vectors, widen to 16 bytes
instead.
(concat): Fix padding calculation to pick up widening logic from
__as_vector.
(cherry picked from commit 241a6cc88d866fb36bd35ddb3edb659453d6322e)
Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
libstdc++-v3/ChangeLog:
PR libstdc++/114958
* include/experimental/bits/simd.h (__as_vector): Return scalar
simd as one-element vector. Return vector from single-vector
fixed_size simd.
(__vec_shuffle): New.
(__extract_part): Adjust return type signature.
(split): Use __extract_part for any split into non-fixed_size
simds.
(concat): If the return type stores a single vector, use
__vec_shuffle (which calls __builtin_shufflevector) to produce
the return value.
* include/experimental/bits/simd_builtin.h
(__shift_elements_right): Removed.
(__extract_part): Return single elements directly. Use
__vec_shuffle (which calls __builtin_shufflevector) to for all
non-trivial cases.
* include/experimental/bits/simd_fixed_size.h (__extract_part):
Return single elements directly.
* testsuite/experimental/simd/pr114958.cc: New test.
(cherry picked from commit fb1649f8b4ad5043dd0e65e4e3a643a0ced018a9)
In r14-5689-g1fa85dcf656e2f I added std::span::at and made the correct
changes to the __cpp_lib_span macro (with tests for the correct value in
C++20/23/26). But I didn't make the declaration of std::span::at
actually depend on the macro, so it was defined for C++20 and C++23, not
only for C++26. This fixes that oversight.
libstdc++-v3/ChangeLog:
PR libstdc++/115335
* include/std/span (span::at): Guard with feature test macro.
(cherry picked from commit 2197814011eec75022aa8550f10621409b69d4a1)
Several of the 19_diagnostics/stacktrace tests FAIL on Solaris/SPARC (32
and 64-bit), Solaris/x86 (32-bit only), and several other targets:
FAIL: 19_diagnostics/stacktrace/current.cc -std=gnu++23 execution test
FAIL: 19_diagnostics/stacktrace/current.cc -std=gnu++26 execution test
FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++23 execution test
FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++26 execution test
FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++23 execution test
FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++26 execution test
FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++23 execution test
FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++26 execution test
As it turns out, both the copy of libbacktrace in libstdc++ and the
testcases proper need to compiled with -funwind-tables, as is done for
libbacktrace itself.
This isn't an issue on Linux/x86_64 and Solaris/amd64 since 64-bit x86
always defaults to -funwind-tables. 32-bit x86 does, too, when
-fomit-frame-pointer is enabled as on Linux/i686, but unlike
Solaris/i386.
So this patch always enables the option both for the libbacktrace copy
and the testcases.
Tested on i386-pc-solaris2.11, sparc-sun-solaris2.11, and
x86_64-pc-linux-gnu.
2024-05-23 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
libstdc++-v3:
PR libstdc++/111641
* src/libbacktrace/Makefile.am (AM_CFLAGS): Add -funwind-tables.
* src/libbacktrace/Makefile.in: Regenerate.
* testsuite/19_diagnostics/stacktrace/current.cc (dg-options): Add
-funwind-tables.
* testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
* testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
* testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
* testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
(cherry picked from commit a99ebb88f8f25e76ebed5afc22e64fa77a2f0d3f)
libstdc++-v3/ChangeLog:
PR libstdc++/109849
* include/bits/vector.tcc
(std::vector<>::_M_range_insert(iterator, _FwdIt, _FwdIt,
forward_iterator_tag))[__cplusplus < 201103L]: Add __builtin_unreachable
expression to tell the compiler that the allocated buffer is large enough to
receive current elements plus the elements of the range to insert.
(cherry picked from commit 0426be454448f8cfb9db21f4f669426afb7b57c8)
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.
(cherry picked from commit b460ede64f9471589822831e04eecff4a3dbecf2)
Clang does not enable -fsized-deallocation by default, which means it
can't compile our <stacktrace> and <generator> headers.
Make the __cpp_lib_generator macro depend on the compiler-defined
__cpp_sized_deallocation macro, and change <stacktrace> to use unsized
deallocation when __cpp_sized_deallocation isn't defined.
libstdc++-v3/ChangeLog:
PR libstdc++/114940
* include/bits/version.def (generator): Depend on
__cpp_sized_deallocation.
* include/bits/version.h: Regenerate.
* include/std/stacktrace (_GLIBCXX_SIZED_DELETE): New macro.
(basic_stacktrace::_Impl::_M_deallocate): Use it.
(cherry picked from commit b2fdd508d7e63158e9d2a6dd04f901d02900def3)
The std:🧵:id formatter uses std::basic_ostringstream without
including <sstream>, which went unnoticed because the test for it uses
a stringstream to check the output is correct.
The fix implemented here is to stop using basic_ostringstream for
formatting thread::id and just use std::format instead.
As a drive-by fix, the formatter specialization is constrained to
require that the thread:🆔:native_handle_type can be formatted, to
avoid making the formatter ill-formed if the pthread_t type is not a
pointer or integer. Since non-void pointers can't be formatted, ensure
that we convert pointers to const void* for formatting. Make a similar
change to the existing operator<< overload so that in the unlikely case
that pthread_t is a typedef for char* we don't treat it as a
null-terminated string when inserting into a stream.
libstdc++-v3/ChangeLog:
PR libstdc++/115099
* include/bits/std_thread.h: Declare formatter as friend of
thread::id.
* include/std/thread (operator<<): Convert non-void pointers to
void pointers for output.
(formatter): Add constraint that thread::native_handle_type is a
pointer or integer.
(formatter::format): Reimplement without basic_ostringstream.
* testsuite/30_threads/thread/id/output.cc: Check output
compiles before <sstream> has been included.
(cherry picked from commit 1a5e4dd83788ea4c049d354d83ad58a6a3d747e6)
Do not use dynamic_cast unconditionally, in case libstdc++ is built with
-fno-rtti.
libstdc++-v3/ChangeLog:
PR libstdc++/115015
* src/c++23/print.cc (__open_terminal(streambuf*)) [!__cpp_rtti]:
Do not use dynamic_cast.
This type trait isn't supported by Clang 18. It's only used in static
assertions, so they can just be omitted if the trait isn't available.
libstdc++-v3/ChangeLog:
PR libstdc++/114891
* include/std/generator: Check feature test macro before using
is_pointer_interconvertible_v.
(cherry picked from commit 1fbe1a50d86df11f434351cf62461a32747f9710)
If we update the list of "active" symbols versions now, rather than when
adding a new symbol version, we will notice if new symbols get added to
the wrong version (as in PR 114692).
libstdc++-v3/ChangeLog:
* testsuite/util/testsuite_abi.cc: Update latest versions to
new versions that should be used in future.
(cherry picked from commit 6e25ca387fbbb412a2e498e28ea5db28e033a318)
Eddie Nolan reported to me that _Unicode_view was not correctly
implementing the substitution of ill-formed subsequences with U+FFFD,
due to failing to increment the counter when the iterator reaches the
end of the sequence before a multibyte sequence is complete. As a
result, the incomplete sequence was not completely consumed, and then
the remaining character was treated as another ill-formed sequence,
giving two U+FFFD characters instead of one.
To avoid similar mistakes in future, this change introduces a lambda
that increments the iterator and the counter together. This ensures the
counter is always incremented when the iterator is incremented, so that
we always know how many characters have been consumed.
libstdc++-v3/ChangeLog:
* include/bits/unicode.h (_Unicode_view::_M_read_utf8): Ensure
count of characters consumed is correct when the end of the
input is reached unexpectedly.
* testsuite/ext/unicode/view.cc: Test incomplete UTF-8
sequences.
(cherry picked from commit 3f04f3939ea0ac8fdd766a60655d29de2ffb44e5)
std::shared_ptr isn't declared for freestanding, so guard uses of it
with #if _GLIBCXX_HOSTED in <bits/out_ptr.h>.
libstdc++-v3/ChangeLog:
PR libstdc++/114866
* include/bits/out_ptr.h [!_GLIBCXX_HOSTED]: Don't refer to
shared_ptr, __shared_ptr or __is_shred_ptr.
* testsuite/20_util/headers/memory/114866.cc: New test.
(cherry picked from commit 9927059bb88e966e0a45f09e4fd1193f93df708f)
We don't want to add grouping to strings like "-inf", and there is no
radix character to replace either.
libstdc++-v3/ChangeLog:
PR libstdc++/114863
* include/std/format (__formatter_fp::format): Only use
_M_localized for finite values.
* testsuite/std/format/functions/format.cc: Check localized
formatting of NaN and initiny.
(cherry picked from commit 7501c0a397fcf609a1ff5f083746b6330b89ee11)
This patch updates the Solaris baselines for the GLIBCXX_3.4.33 version
added in GCC 14.0.
Tested on i386-pc-solaris2.11 and sparc-sun-solaris2.11 (32 and 64-bit
each), together with the GLIBCXX_3.4.32 update, on both gcc-14 branch
and trunk.
2024-04-28 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
libstdc++-v3:
* config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
* config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
Likewise.
* config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
* config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
Likewise.
This patch updates the Solaris baselines for the GLIBCXX_3.4.32 version
added in GCC 13.2.
Tested on i386-pc-solaris2.11 and sparc-sun-solaris2.11 (32 and 64-bit
each) on the gcc-13 branch and (together with the GLIBCXX_3.4.33 update)
on both gcc-14 branch and trunk.
2024-04-28 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
libstdc++-v3:
* config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
* config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
Likewise.
* config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
* config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
Likewise.
(cherry picked from commit 3e1ca512848994950cc0641986b6ec337df5765f)
The Doxygen-generated man pages for some new types need to be renamed to
use '::' instead of '_' in the filenames.
libstdc++-v3/ChangeLog:
* scripts/run_doxygen: Rename man pages for nested types.
