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2025-10-16libstdc++: Improve ostream output for std::stacktraceJonathan Wakely1-4/+24
With this change stacktrace entries always output the frame address, and source file information no longer results in " at :0", e.g. 16# myfunc(int) at /tmp/bt.cc:48 [0x4008b7] 17# main at /tmp/bt.cc:61 [0x40091a] 18# __libc_start_call_main [0x7efc3d6d3574] 19# __libc_start_main@GLIBC_2.2.5 [0x7efc3d6d3627] 20# _start [0x400684] This replaces the previous output: 16# myfunc(int) at /tmp/bt.cc:48 17# main at /tmp/bt.cc:61 18# __libc_start_call_main at :0 19# __libc_start_main@GLIBC_2.2.5 at :0 20# _start at :0 A change that is not visible in the examples above is that for a non-empty stacktrace_entry, we now print "<unknown>" for the function name if description() returns an empty string. For an empty (e.g. default constructed) stacktrace_entry the entire string representation is now "<unknown>" instead of an empty string. Instead of printing "<unknown>" for the function name, we could set that string in the stacktrace_entry::_Info object, so that description() returns "<unknown>" and then operator<< wouldn't need to handle an empty description() string. However, returning an empty string from that function seems simpler for users to detect, rather than having to parse "<unknown>". We could also choose a different string for an empty stacktrace_entry, maybe "<none>" or "<invalid>", but "<unknown>" seems good. libstdc++-v3/ChangeLog: * include/std/stacktrace (operator<<(ostream&, const stacktrace_entry&)): Improve output when description() or source_file() returns an empty string, or the stacktrace_entry is invalid. Append frame address to output. (operator<<(ostream&, const basic_stacktrace<A>&)): Use the size_type of the correct specialization. Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com> Reviewed-by: Nathan Myers <nmyers@redhat.com>
2025-10-15libstdc++: Remove invalid entry from the end of std::stacktraceJonathan Wakely1-0/+14
The backtrace_simple function seems to consistently invoke the callback with an invalid -1UL value as the last entry, which seems to come from _Unwind_Backtrace. The glibc backtrace(3) function has a special case to not include that final invalid address, but libbacktrace doesn't seem to handle it. Do so in std::stacktrace::current() instead. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::current): Call _M_trim before returning. (basic_stacktrace::_M_trim): New member function.
2025-10-10libstdc++: Implement P3235R3 optimizations for std::print [PR121790]Tomasz Kamiński1-0/+12
This patch implements additional enable_nonlocking_formatter_optimization specializations listed in P3235R3. PR libstdc++/121790 libstdc++-v3/ChangeLog: * include/bits/chrono_io.h (enable_nonlocking_formatter_optimization): Define specializations for chrono types. * include/bits/version.def (print): Bump. * include/bits/version.h: Regenerate. * include/std/format (enable_nonlocking_formatter_optimization): Define specializations for pair, tuple and ranges. * include/std/queue (enable_nonlocking_formatter_optimization): Define specializations for queue and priority_queue. * include/std/stack (enable_nonlocking_formatter_optimization): Define specialization for stack. * include/std/stacktrace (enable_nonlocking_formatter_optimization): Define specialization for basic_stacktrace and stacktrace_entry. * include/std/thread (enable_nonlocking_formatter_optimization): Define specialization for thread::id. * include/std/vector (enable_nonlocking_formatter_optimization): Define specialization for vector<bool>::reference. * testsuite/23_containers/vector/bool/format.cc: Test value of enable_nonlocking_formatter_optimization. * testsuite/30_threads/thread/id/output.cc: Likewise. * testsuite/std/format/ranges/adaptors.cc: Likewise. * testsuite/std/format/ranges/formatter.cc: Likewise. * testsuite/std/format/tuple.cc: Likewise. * testsuite/std/time/format/empty_spec.cc: Extract Rep class to custom_rep.h. * testsuite/std/time/format/custom_rep.h: Extracted from empty_spec.cc. * testsuite/std/time/format/nonlocking.cc: New test. Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
2025-02-27libstdc++: Fix outdated comment in <stacktrace>Jonathan Wakely1-1/+1
My r15-998-g2a83084ce55363 change replaced the use of nothrow operator new with a call to __get_temporary_buffer, so update the comment to match. libstdc++-v3/ChangeLog: * include/std/stacktrace (_Impl::_M_allocate): Fix outdated comment.
2024-11-28libstdc++: Use std::_Destroy in std::stacktraceJonathan Wakely1-2/+1
This benefits from the optimizations in std::_Destroy which avoid doing any work when using std::allocator. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::_M_impl::_M_resize): Use std::_Destroy to destroy removed elements.
2024-11-28libstdc++: Fix allocator-extended move ctor for std::basic_stacktrace [PR117822]Jonathan Wakely1-1/+1
libstdc++-v3/ChangeLog: PR libstdc++/117822 * include/std/stacktrace (stacktrace(stacktrace&&, const A&)): Fix typo in qualified-id for is_always_equal trait. * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Test allocator-extended constructors and allocator propagation.
2024-09-26libstdc++: Fix std::basic_stracktrace to not assume allocators throw ↵Jonathan Wakely1-2/+2
std::bad_alloc The standard allows allocators to throw any kind of exception, not only something that can be caught as std::bad_alloc. std::basic_stracktrace was assuming std::bad_alloc. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate): Do not assume allocators only throw std::bad_alloc.
2024-09-25libstdc++: #ifdef out #pragma GCC system_headerJason Merrill1-0/+2
In r15-3714-gd3a7302ec5985a I added -Wsystem-headers to the libstdc++ build flags to help catch problems in the library. This patch takes a different approach, of disabling the #pragma system_header unless _GLIBCXX_SYSHDR is defined. As a result, the testsuites will treat them as non-system-headers to get better warning coverage during regression testing of both gcc and libstdc++, not just when building the library. My rationale for the #ifdef instead of just removing the #pragma is the three G++ tests that want to test libstdc++ system header behavior, so we need a way to select it. This doesn't affect installed libraries, as they get their system-header status from the lookup path. But testsuite_flags --build-includes gives -I directives rather than -isystem. This patch doesn't change the headers in config/ because I'm not compiling with most of them, so won't see any warnings that need fixing. Adjusting them could happen later, or we can not bother. libstdc++-v3/ChangeLog: * acinclude.m4 (WARN_FLAGS): Remove -Wsystem-headers. * configure: Regenerate. * include/bits/algorithmfwd.h: #ifdef out #pragma GCC system_header. * include/bits/atomic_base.h * include/bits/atomic_futex.h * include/bits/atomic_timed_wait.h * include/bits/atomic_wait.h * include/bits/basic_ios.h * include/bits/basic_string.h * include/bits/boost_concept_check.h * include/bits/char_traits.h * include/bits/charconv.h * include/bits/chrono.h * include/bits/chrono_io.h * include/bits/codecvt.h * include/bits/concept_check.h * include/bits/cpp_type_traits.h * include/bits/elements_of.h * include/bits/enable_special_members.h * include/bits/erase_if.h * include/bits/forward_list.h * include/bits/functional_hash.h * include/bits/gslice.h * include/bits/gslice_array.h * include/bits/hashtable.h * include/bits/indirect_array.h * include/bits/invoke.h * include/bits/ios_base.h * include/bits/iterator_concepts.h * include/bits/locale_classes.h * include/bits/locale_facets.h * include/bits/locale_facets_nonio.h * include/bits/localefwd.h * include/bits/mask_array.h * include/bits/max_size_type.h * include/bits/memory_resource.h * include/bits/memoryfwd.h * include/bits/move_only_function.h * include/bits/node_handle.h * include/bits/ostream_insert.h * include/bits/out_ptr.h * include/bits/parse_numbers.h * include/bits/postypes.h * include/bits/quoted_string.h * include/bits/range_access.h * include/bits/ranges_base.h * include/bits/refwrap.h * include/bits/sat_arith.h * include/bits/semaphore_base.h * include/bits/slice_array.h * include/bits/std_abs.h * include/bits/std_function.h * include/bits/std_mutex.h * include/bits/std_thread.h * include/bits/stl_iterator_base_funcs.h * include/bits/stl_iterator_base_types.h * include/bits/stl_tree.h * include/bits/stream_iterator.h * include/bits/streambuf_iterator.h * include/bits/stringfwd.h * include/bits/this_thread_sleep.h * include/bits/unique_lock.h * include/bits/uses_allocator_args.h * include/bits/utility.h * include/bits/valarray_after.h * include/bits/valarray_array.h * include/bits/valarray_before.h * include/bits/version.h * include/c_compatibility/fenv.h * include/c_compatibility/inttypes.h * include/c_compatibility/stdint.h * include/decimal/decimal.h * include/experimental/bits/net.h * include/experimental/bits/shared_ptr.h * include/ext/aligned_buffer.h * include/ext/alloc_traits.h * include/ext/atomicity.h * include/ext/concurrence.h * include/ext/numeric_traits.h * include/ext/pod_char_traits.h * include/ext/pointer.h * include/ext/stdio_filebuf.h * include/ext/stdio_sync_filebuf.h * include/ext/string_conversions.h * include/ext/type_traits.h * include/ext/vstring.h * include/ext/vstring_fwd.h * include/ext/vstring_util.h * include/parallel/algorithmfwd.h * include/parallel/numericfwd.h * include/tr1/functional_hash.h * include/tr1/hashtable.h * include/tr1/random.h * libsupc++/exception.h * libsupc++/hash_bytes.h * include/bits/basic_ios.tcc * include/bits/basic_string.tcc * include/bits/fstream.tcc * include/bits/istream.tcc * include/bits/locale_classes.tcc * include/bits/locale_facets.tcc * include/bits/locale_facets_nonio.tcc * include/bits/ostream.tcc * include/bits/sstream.tcc * include/bits/streambuf.tcc * include/bits/string_view.tcc * include/bits/version.tpl * include/experimental/bits/string_view.tcc * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp * include/ext/random.tcc * include/ext/vstring.tcc * include/tr2/bool_set.tcc * include/tr2/dynamic_bitset.tcc * include/bits/c++config * include/c/cassert * include/c/cctype * include/c/cerrno * include/c/cfloat * include/c/ciso646 * include/c/climits * include/c/clocale * include/c/cmath * include/c/csetjmp * include/c/csignal * include/c/cstdarg * include/c/cstddef * include/c/cstdio * include/c/cstdlib * include/c/cstring * include/c/ctime * include/c/cuchar * include/c/cwchar * include/c/cwctype * include/c_global/cassert * include/c_global/ccomplex * include/c_global/cctype * include/c_global/cerrno * include/c_global/cfenv * include/c_global/cfloat * include/c_global/cinttypes * include/c_global/ciso646 * include/c_global/climits * include/c_global/clocale * include/c_global/cmath * include/c_global/csetjmp * include/c_global/csignal * include/c_global/cstdalign * include/c_global/cstdarg * include/c_global/cstdbool * include/c_global/cstddef * include/c_global/cstdint * include/c_global/cstdio * include/c_global/cstdlib * include/c_global/cstring * include/c_global/ctgmath * include/c_global/ctime * include/c_global/cuchar * include/c_global/cwchar * include/c_global/cwctype * include/c_std/cassert * include/c_std/cctype * include/c_std/cerrno * include/c_std/cfloat * include/c_std/ciso646 * include/c_std/climits * include/c_std/clocale * include/c_std/cmath * include/c_std/csetjmp * include/c_std/csignal * include/c_std/cstdarg * include/c_std/cstddef * include/c_std/cstdio * include/c_std/cstdlib * include/c_std/cstring * include/c_std/ctime * include/c_std/cuchar * include/c_std/cwchar * include/c_std/cwctype * include/debug/array * include/debug/bitset * include/debug/deque * include/debug/forward_list * include/debug/list * include/debug/map * include/debug/set * include/debug/string * include/debug/unordered_map * include/debug/unordered_set * include/debug/vector * include/decimal/decimal * include/experimental/algorithm * include/experimental/any * include/experimental/array * include/experimental/buffer * include/experimental/chrono * include/experimental/contract * include/experimental/deque * include/experimental/executor * include/experimental/filesystem * include/experimental/forward_list * include/experimental/functional * include/experimental/internet * include/experimental/io_context * include/experimental/iterator * include/experimental/list * include/experimental/map * include/experimental/memory * include/experimental/memory_resource * include/experimental/net * include/experimental/netfwd * include/experimental/numeric * include/experimental/propagate_const * include/experimental/ratio * include/experimental/regex * include/experimental/scope * include/experimental/set * include/experimental/socket * include/experimental/string * include/experimental/string_view * include/experimental/synchronized_value * include/experimental/system_error * include/experimental/timer * include/experimental/tuple * include/experimental/type_traits * include/experimental/unordered_map * include/experimental/unordered_set * include/experimental/vector * include/ext/algorithm * include/ext/cmath * include/ext/functional * include/ext/iterator * include/ext/memory * include/ext/numeric * include/ext/random * include/ext/rb_tree * include/ext/rope * include/parallel/algorithm * include/std/algorithm * include/std/any * include/std/array * include/std/atomic * include/std/barrier * include/std/bit * include/std/bitset * include/std/charconv * include/std/chrono * include/std/codecvt * include/std/complex * include/std/concepts * include/std/condition_variable * include/std/coroutine * include/std/deque * include/std/execution * include/std/expected * include/std/filesystem * include/std/format * include/std/forward_list * include/std/fstream * include/std/functional * include/std/future * include/std/generator * include/std/iomanip * include/std/ios * include/std/iosfwd * include/std/iostream * include/std/istream * include/std/iterator * include/std/latch * include/std/limits * include/std/list * include/std/locale * include/std/map * include/std/memory * include/std/memory_resource * include/std/mutex * include/std/numbers * include/std/numeric * include/std/optional * include/std/ostream * include/std/print * include/std/queue * include/std/random * include/std/ranges * include/std/ratio * include/std/regex * include/std/scoped_allocator * include/std/semaphore * include/std/set * include/std/shared_mutex * include/std/span * include/std/spanstream * include/std/sstream * include/std/stack * include/std/stacktrace * include/std/stdexcept * include/std/streambuf * include/std/string * include/std/string_view * include/std/syncstream * include/std/system_error * include/std/text_encoding * include/std/thread * include/std/tuple * include/std/type_traits * include/std/typeindex * include/std/unordered_map * include/std/unordered_set * include/std/utility * include/std/valarray * include/std/variant * include/std/vector * include/std/version * include/tr1/array * include/tr1/cfenv * include/tr1/cinttypes * include/tr1/cmath * include/tr1/complex * include/tr1/cstdbool * include/tr1/cstdint * include/tr1/cstdio * include/tr1/cstdlib * include/tr1/cwchar * include/tr1/cwctype * include/tr1/functional * include/tr1/memory * include/tr1/random * include/tr1/regex * include/tr1/tuple * include/tr1/type_traits * include/tr1/unordered_map * include/tr1/unordered_set * include/tr1/utility * include/tr2/bool_set * include/tr2/dynamic_bitset * include/tr2/type_traits * libsupc++/atomic_lockfree_defines.h * libsupc++/compare * libsupc++/cxxabi.h * libsupc++/cxxabi_forced.h * libsupc++/cxxabi_init_exception.h * libsupc++/exception * libsupc++/initializer_list * libsupc++/new * libsupc++/typeinfo: Likewise. * testsuite/20_util/ratio/operations/ops_overflow_neg.cc * testsuite/23_containers/array/tuple_interface/get_neg.cc * testsuite/23_containers/vector/cons/destructible_debug_neg.cc * testsuite/24_iterators/operations/prev_neg.cc * testsuite/ext/type_traits/add_unsigned_floating_neg.cc * testsuite/ext/type_traits/add_unsigned_integer_neg.cc * testsuite/ext/type_traits/remove_unsigned_floating_neg.cc * testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: Adjust line numbers. gcc/testsuite/ChangeLog * g++.dg/analyzer/fanalyzer-show-events-in-system-headers-default.C * g++.dg/analyzer/fanalyzer-show-events-in-system-headers-no.C * g++.dg/diagnostic/disable.C: #define _GLIBCXX_SYSHDR.
2024-09-15libstdc++: Adjust std::span::iterator to be ADL-proofJonathan Wakely1-1/+3
Because std::span<Incomplete> can be useful, it makes sense to define std::span<Incomplete>::iterator such that Incomplete is not an associated class, and so the compiler won't attempt to complete it when doing ADL for span iterators (including during the definition of std::span<Incomplete>::const_iterator which checks that iterator satisfies std::input_or_output_iterator). We can't make this change for std::vector<Incomplete> because it would change the mangled name of std::vector<Incomplete>::iterator which would affect the mangled names of templates and functions written by users. We can do the same thing for std::basic_stacktrace<Alloc> just so that Alloc is not an associated class. This is probably less beneficial, as Alloc can't be incomplete, and using SomeAllocator<Incomplete> as the allocator parameter doesn't seem useful. But simply making the stacktrace iterator not use Alloc for ADL lookup seems worthwhile. This is doable because std::stacktrace is part of C++23 so its ABI isn't considered stable yet. libstdc++-v3/ChangeLog: * include/std/span (span::__iter_tag): Declare nested type. (span::iterator): Use __iter_tag as second template argument. * include/std/stacktrace (basic_stacktrace::iterator): Use _Impl as second template argument.
2024-08-28libstdc++: avoid -Wsign-compareJason Merrill1-1/+2
-Wsign-compare complained about these comparisons between (unsigned) size_t and (signed) streamsize, or between (unsigned) native_handle_type and (signed) -1. Fixed by adding casts to unify the types. libstdc++-v3/ChangeLog: * include/std/istream: Add cast to avoid -Wsign-compare. * include/std/stacktrace: Likewise.
2024-06-03libstdc++: Reuse temporary buffer utils in <stacktrace>Jonathan Wakely1-25/+4
The non-throwing allocation logic in std::stacktrace duplicates the logic in <bits/stl_tempbuf.h>, so we can just reuse those utilities. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate): Use __detail::__get_temporary_buffer. (basic_stacktrace::_Impl::_M_deallocate): Use __detail::__return_temporary_buffer.
2024-05-22libstdc++: Guard use of sized deallocation [PR114940]Jonathan Wakely1-2/+11
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.
2024-05-14libstdc++: Fix typo in std::stacktrace::max_size [PR115063]Jonathan Wakely1-1/+1
libstdc++-v3/ChangeLog: PR libstdc++/115063 * include/std/stacktrace (basic_stacktrace::max_size): Fix typo in reference to _M_alloc member. * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Check max_size() compiles.
2024-02-28libstdc++: Add more [[nodiscard]] to <stacktrace>Jonathan Wakely1-5/+31
libstdc++-v3/ChangeLog: * include/std/stacktrace: Add nodiscard attribute to all functions without side effects.
2023-11-16libstdc++: Fix aligned formatting of stacktrace_entry and thread::id [PR112564]Jonathan Wakely1-1/+3
The formatter for std::thread::id should default to right-align, and the formatter for std::stacktrace_entry should not just ignore the fill-and-align and width from the format-spec! libstdc++-v3/ChangeLog: PR libstdc++/112564 * include/std/stacktrace (formatter::format): Format according to format-spec. * include/std/thread (formatter::format): Use _Align_right as default. * testsuite/19_diagnostics/stacktrace/output.cc: Check fill-and-align handling. Change compile test to run. * testsuite/30_threads/thread/id/output.cc: Check fill-and-align handling.
2023-11-15libstdc++: std::stacktrace tweaksJonathan Wakely1-1/+1
Fix a typo in a string literal and make the new hash.cc test gracefully handle missing stacktrace data (see PR 112541). libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::at): Fix class name in exception message. * testsuite/19_diagnostics/stacktrace/hash.cc: Do not fail if current() returns a non-empty stacktrace.
2023-11-14libstdc++: Fix std::hash<std::stacktrace> [PR112348]Jonathan Wakely1-1/+1
libstdc++-v3/ChangeLog: PR libstdc++/112348 * include/std/stacktrace (hash<basic_stacktrace<Alloc>>): Fix type of hash functio nfor entries. * testsuite/19_diagnostics/stacktrace/hash.cc: New test.
2023-09-11libstdc++: Formatting std::thread::id and std::stacktrace (P2693R1)Jonathan Wakely1-0/+80
New std::formatter specializations for C++23. libstdc++-v3/ChangeLog: * include/bits/version.def (__cpp_lib_formatters): Define. * include/bits/version.h: Regenerate. * include/std/stacktrace (formatter<stacktrace_entry>) (formatter<basic_stacktrace<Alloc>>): Define. * include/std/thread (formatter<thread::id, charT>): Define. * testsuite/19_diagnostics/stacktrace/output.cc: New test. * testsuite/19_diagnostics/stacktrace/synopsis.cc: Add std::formatter specializations. * testsuite/19_diagnostics/stacktrace/version.cc: Check __cpp_lib_formatters macro. * testsuite/30_threads/thread/id/hash.cc: Remove gthreads dependency. * testsuite/30_threads/thread/id/operators.cc: Likewise. * testsuite/30_threads/thread/id/operators_c++20.cc: Likewise. * testsuite/30_threads/thread/id/output.cc: New test.
2023-09-08libstdc++: Add Filesystem TS and std::stacktrace symbols to libstdc++exp.aJonathan Wakely1-108/+34
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.
2023-08-16libstdc++: Replace all manual FTM definitions and useArsen Arsenović1-5/+5
libstdc++-v3/ChangeLog: * libsupc++/typeinfo: Switch to bits/version.h for __cpp_lib_constexpr_typeinfo. * libsupc++/new: Switch to bits/version.h for __cpp_lib_{launder,hardware_interference_size,destroying_delete}. (launder): Guard behind __cpp_lib_launder. (hardware_destructive_interference_size) (hardware_constructive_interference_size): Guard behind __cpp_lib_hardware_interference_size. * libsupc++/exception: Switch to bits/version.h for __cpp_lib_uncaught_exceptions. (uncaught_exceptions): Guard behind __cpp_lib_uncaught_exceptions. * libsupc++/compare: Switch to bits/version.h for __cpp_lib_three_way_comparison. (three_way_comparable, three_way_comparable_with) (compare_three_way, weak_order, strong_order, partial_order): Guard behind __cpp_lib_three_way_comparison >= 201907L. * include/std/chrono: Drop __cpp_lib_chrono definition. * include/std/vector: Switch to bits/version.h for __cpp_lib_erase_if. (erase, erase_if): Guard behind __cpp_lib_erase_if. * include/std/variant: Switch to bits/version.h for __cpp_lib_variant. Guard whole header behind that FTM. * include/std/utility: Switch to bits/version.h for __cpp_lib_{exchange_function,constexpr_algorithms,as_const}, __cpp_lib_{integer_comparison_functions,to_underlying}, and __cpp_lib_unreachable. (exchange): Guard behind __cpp_lib_exchange_function. (cmp_equal, cmp_not_equal, cmp_less, cmp_greater, cmp_less_equal) (cmp_greater_equal, in_range): Guard behind __cpp_lib_integer_comparison_functions. (to_underlying): Guard behind __cpp_lib_to_underlying. (unreachable): Guard behind __cpp_lib_unreachable. * include/std/type_traits: Switch to bits/version.h for __cpp_lib_is_{null_pointer,final,nothrow_convertible,aggregate}, __cpp_lib_is_{constant_evaluated,invocable,layout_compatible}, __cpp_lib_is_{pointer_interconvertible,scoped_enum,swappable}, __cpp_lib_{logical_traits,reference_from_temporary,remove_cvref}, __cpp_lib_{result_of_sfinae,transformation_trait_aliases}, __cpp_lib_{type_identity,type_trait_variable_templates}, __cpp_lib_{unwrap_ref,void_t,integral_constant_callable}, __cpp_lib_{bool_constant,bounded_array_traits}, and __cpp_lib_has_unique_object_representations. (integral_constant::operator()): Guard behind __cpp_lib_integral_constant_callable. (bool_constant): Guard behind __cpp_lib_bool_constant. (conjunction, disjunction, negation, conjunction_v, disjunction_v) (negation_v): Guard behind __cpp_lib_logical_traits. (is_null_pointer): Guard behind __cpp_lib_is_null_pointer. (is_final): Guard behind __cpp_lib_is_final. (is_nothrow_convertible, is_nothrow_convertible_v): Guard behind __cpp_lib_is_nothrow_convertible. (remove_const_t, remove_volatile_t, remove_cv_t) (add_const_t, add_volatile_t, add_cv_t): Guard behind __cpp_lib_transformation_trait_aliases. (void_t): Guard behind __cpp_lib_void_t. (is_swappable_with_v, is_nothrow_swappable_with_v) (is_swappable_with, is_nothrow_swappable_with): Guard behind __cpp_lib_is_swappable. (is_nothrow_invocable_r, is_invocable_r, invoke_result) (is_invocable, invoke_result_t): Guard behind __cpp_lib_is_invocable. (alignment_of_v, extent_v, has_virtual_destructor_v) (is_abstract_v, is_arithmetic_v, is_array_v) (is_assignable_v, is_base_of_v, is_class_v, is_compound_v) (is_constructible_v, is_const_v, is_convertible_v) (is_copy_assignable_v, is_copy_constructible_v) (is_default_constructible_v, is_destructible_v) (is_empty_v, is_enum_v, is_final_v, is_floating_point_v) (is_function_v, is_fundamental_v, is_integral_v) (is_invocable_r_v, is_invocable_v, is_literal_type_v) (is_lvalue_reference_v, is_member_function_pointer_v) (is_member_object_pointer_v, is_member_pointer_v) (is_move_assignable_v, is_move_constructible_v) (is_nothrow_assignable_v, is_nothrow_constructible_v) (is_nothrow_copy_assignable_v, is_nothrow_copy_constructible_v) (is_nothrow_default_constructible_v, is_nothrow_destructible_v) (is_nothrow_invocable_r_v, is_nothrow_invocable_v) (is_nothrow_move_assignable_v, is_nothrow_move_constructible_v) (is_null_pointer_v, is_object_v, is_pod_v, is_pointer_v) (is_polymorphic_v, is_reference_v, is_rvalue_reference_v) (is_same_v, is_scalar_v, is_signed_v, is_standard_layout_v) (is_trivially_assignable_v, is_trivially_constructible_v) (is_trivially_copyable_v, is_trivially_copy_assignable_v) (is_trivially_copy_constructible_v) (is_trivially_default_constructible_v) (is_trivially_destructible_v, is_trivially_move_assignable_v) (is_trivially_move_constructible_v, is_trivial_v, is_union_v) (is_unsigned_v, is_void_v, is_volatile_v, rank_v, as variadic): Guard behind __cpp_lib_type_trait_variable_templates. (has_unique_object_representations) (has_unique_object_representations_v): Guard behind __cpp_lib_has_unique_object_representation. (is_aggregate): Guard behind __cpp_lib_is_aggregate. (remove_cvref, remove_cvref_t): Guard behind __cpp_lib_remove_cvref. (type_identity, type_identity_t): Guard behind __cpp_lib_type_identity. (unwrap_reference, unwrap_reference_t, unwrap_ref_decay) (unwrap_ref_decay_t): Guard behind __cpp_lib_unwrap_ref. (is_bounded_array_v, is_unbounded_array_v, is_bounded_array) (is_unbounded_array): Guard behind __cpp_lib_bounded_array_traits. (is_scoped_enum, is_scoped_enum_v): Guard behind __cpp_lib_is_scoped_enum. (reference_constructs_from_temporary) (reference_constructs_from_temporary_v): Guard behind __cpp_lib_reference_from_temporary. * include/std/tuple: Switch to bits/version.h for __cpp_lib_{constexpr_tuple,tuple_by_type,apply_make_from_tuple}. (get<T>): Guard behind __cpp_lib_tuple_by_type. (apply): Guard behind __cpp_lib_apply. (make_from_tuple): Guard behind __cpp_lib_make_from_tuple. * include/std/syncstream: Switch to bits/version.h for __cpp_lib_syncbuf. Guard header behind that FTM. * include/std/string_view: Switch to bits/version.h for __cpp_lib_{string_{view,contains},constexpr_string_view} and __cpp_lib_starts_ends_with. (basic_string_view::starts_with, basic_string_view::ends_with): Guard behind __cpp_lib_starts_ends_with. [C++23 && _GLIBCXX_HOSTED && !defined(__cpp_lib_string_contains)]: Assert as impossible ithout a bug in C++23. * include/std/string: Switch to bits/version.h for __cpp_lib_erase_if. (erase, erase_if): Guard behind __cpp_lib_erase_if. * include/std/thread: Switch to bits/version.h for __cpp_lib_jthread. * include/std/stop_token: Switch to bits/version.h for __cpp_lib_jthread. * include/std/spanstream: Switch to bits/version.h for __cpp_lib_spanstream. Guard header behind that FTM. * include/std/span: Switch to bits/version.h for __cpp_lib_span. Guard header behind that FTM. * include/std/source_location: Switch to bits/version.h for __cpp_lib_source_location. Guard header with that FTM. * include/std/shared_mutex: Switch to bits/version.h for __cpp_lib_shared{,_timed}_mutex. (shared_mutex): Guard behind __cpp_lib_shared_mutex. * include/std/semaphore: Switch to bits/version.h for __cpp_lib_semaphore. Guard header behind that FTM. * include/std/ranges: Switch to bits/version.h for __cpp_lib_ranges_{zip,chunk{,_by},slide,join_with}, __cpp_lib_ranges_{repeat_stride,cartesian_product,as_rvalue}, and __cpp_lib_ranges_{as_const,enumerate,iota}. (ranges::zip et al, ranges::chunk et al, ranges::slide et al) (ranges::chunk_by et al, ranges::join_with et al) (ranges::stride et al, ranges::cartesian_product et al) (ranges::as_rvalue et al, ranges::as_const et al) (ranges::enumerate et al): Guard behind appropriate FTM. * include/std/optional: Switch to bits/version.h for __cpp_lib_optional. Guard header behind that FTM. * include/std/numeric: Switch to bits/version.h for __cpp_lib_{gcd{,_lcm},lcm,constexpr_numeric,interpolate} and __cpp_lib_parallel_algorithm. (gcd, lcm): Guard behind __cpp_lib_gcd_lcm. (midpoint): Guard behind __cpp_lib_interpolate. * include/std/numbers: Switch to bits/version.h for __cpp_lib_math_constants. Guard header behind that FTM. * include/std/mutex: Switch to bits/version.h for __cpp_lib_scoped_lock. (scoped_Lock): Guard behind __cpp_lib_scoped_lock. * include/std/memory_resource: Switch to bits/version.h for __cpp_lib_{polymorphic_allocator,memory_resource}. (synchronized_pool_resource): Guard behind __cpp_lib_memory_resource >= 201603L. (polymorphic_allocator): Guard behind __cpp_lib_polymorphic_allocator. * include/std/memory: Switch to bits/version.h for __cpp_lib_{parallel_algorithm,atomic_value_initialization}. * include/std/list: Switch to bits/version.h for __cpp_lib_erase_if. (erase, erase_if): Guard behind __cpp_lib_erase_if. * include/std/latch: Switch to bits/version.h for __cpp_lib_latch. Guard header behind that FTM. * include/std/iterator: Switch to bits/version.h for __cpp_lib_null_iterators. * include/std/iomanip: Switch to bits/version.h for __cpp_lib_quoted_string_io. (quoted): Guard behind __cpp_lib_quoted_string_io. * include/std/functional: Switch to bits/version.h for __cpp_lib_{invoke{,_r},constexpr_functional,bind_front} and __cpp_lib_{not_fn,booyer_moore_searcher}. (invoke): Guard behind __cpp_lib_invoke. (invoke_r): Guard behind __cpp_lib_invoke_r. (bind_front): Guard behind __cpp_lib_bind_front. (not_fn): Guard behind __cpp_lib_not_fn. (boyer_moore_searcher, boyer_moore_horspool_searcher): Guard definition behind __cpp_lib_boyer_moore_searcher. * include/std/forward_list: Switch to bits/version.h for __cpp_lib_erase_if. (erase, erase_if): Guard behind __cpp_lib_erase_if. * include/std/format: Switch to bits/version.h for __cpp_lib_format. Guard header behind that FTM. * include/std/filesystem: Switch to bits/version.h for __cpp_lib_filesystem. Guard header behind that FTM. * include/std/expected: Switch to bits/version.h for __cpp_lib_expected. Guard header behind it. * include/std/execution: Switch to bits/version.h for __cpp_lib_{execution,parallel_algorithm}. Guard header behind either. * include/std/deque: Switch to bits/version.h for __cpp_lib_erase_if. (erase, erase_if): Guard behind __cpp_lib_erase_if. * include/std/coroutine: Switch to bits/version.h for __cpp_lib_coroutine. Guard header behind that FTM. * include/std/concepts: Switch to bits/version.h for __cpp_lib_concepts. Guard header behind that FTM. * include/std/complex: Switch to bits/version.h for __cpp_lib_{complex_udls,constexpr_complex}. (operator""if, operator""i, operator""il): Guard behind __cpp_lib_complex_udls. * include/std/charconv: Swtich to bits/version.h for __cpp_lib_{to_chars,constexpr_charconv}. * include/std/bitset: Switch to bits/version.h for __cpp_lib_constexpr_bitset. * include/std/bit: Switch to bits/version.h for __cpp_lib_{bit_cast,byteswap,bitops,int_pow2,endian}. (bit_cast): Guard behind __cpp_lib_bit_cast. (byteswap): Guard behind __cpp_lib_byteswap. (rotl, rotr, countl_zero, countl_one, countr_zero, countr_one) (popcount): Guard behind __cpp_lib_bitops. (has_single_bit, bit_ceil, bit_floor, bit_width): Guard behind __cpp_lib_int_pow2. (endian): Guard behind __cpp_lib_endian. * include/std/barrier: Switch to bits/version.h for __cpp_lib_barrier. Guard header behind that FTM. * include/std/atomic: Switch to bits/version.h for __cpp_lib_atomic_{is_always_lock_free,float,ref} and __cpp_lib_lock_free_type_aliases. (*::is_always_lock_free): Guard behind __cpp_lib_atomic_is_always_lock_free. (atomic<float>): Guard behind __cpp_lib_atomic_float. (atomic_ref): Guard behind __cpp_lib_atomic_ref. (atomic_signed_lock_free, atomic_unsigned_lock_free): Guard behind __cpp_lib_atomic_lock_free_type_aliases. * include/std/array: Switch to bits/version.h for __cpp_lib_to_array. (to_array): Guard behind __cpp_lib_to_array. * include/std/any: Switch to bits/version.h for __cpp_lib_any. Guard header behind that FTM. * include/std/algorithm: Switch to bits/version.h for __cpp_lib_parallel_algorithm. * include/c_global/cstddef: Switch to bits/version.h for __cpp_lib_byte. (byte): Guard behind __cpp_lib_byte. * include/c_global/cmath: Switch to bits/version.h for __cpp_lib_{hypot,interpolate}. (hypot3): Guard behind __cpp_lib_hypot. (lerp): Guard behind __cpp_lib_interpolate. * include/c_compatibility/stdatomic.h: Switch to bits/stl_version.h for __cpp_lib_atomic. Guard header behind that FTM. * include/bits/utility.h: Switch to bits/version.h for __cpp_lib_{tuple_element_t,integer_sequence,ranges_zip}. (tuple_element_t): Guard behind __cpp_lib_tuple_element_t. (integer_sequence et al): Guard behind __cpp_lib_integer_sequence. * include/bits/uses_allocator_args.h: Switch to bits/version.h for __cpp_lib_make_obj_using_allocator. Guard header behind that FTM. * include/bits/unordered_map.h: Switch to bits/version.h for __cpp_lib_unordered_map_try_emplace. (try_emplace): Guard behind __cpp_lib_unordered_map_try_emplace. * include/bits/unique_ptr.h: Switch to bits/version.h for __cpp_lib_{constexpr_memory,make_unique}. (make_unique): Guard behind __cpp_lib_make_unique. * include/bits/stl_vector.h: Switch to bits/version.h for __cpp_lib_constexpr_vector. * include/bits/stl_uninitialized.h: Switch to bits/version.h for __cpp_lib_raw_memory_algorithms. (uninitialized_default_construct) (uninitialized_default_construct_n, uninitialized_move) (uninitialized_move_n, uninitialized_value_construct) (uninitialized_value_construct_n): Guard behind __cpp_lib_raw_memory_algorithms. * include/bits/stl_tree.h: Switch to bits/version.h for __cpp_lib_generic_associative_lookup. * include/bits/stl_stack.h: Switch to bits/version.h for __cpp_lib_adaptor_iterator_pair_constructor. (stack): Guard iterator-pair constructor behind __cpp_lib_adaptor_iterator_pair_constructor. * include/bits/stl_queue.h: Switch to bits/version.h for __cpp_lib_adaptor_iterator_pair_constructor. (queue): Guard iterator-pair constructor behind __cpp_lib_adaptor_iterator_pair_constructor. * include/bits/stl_pair.h: Switch to bits/version.h for __cpp_lib_{concepts,tuples_by_type}. (get): Guard type-getting overloads behind __cpp_lib_tuples_by_type. * include/bits/stl_map.h: Switch to bits/version.h for __cpp_lib_map_try_emplace. (map<>::try_emplace): Guard behind __cpp_lib_map_try_emplace. * include/bits/stl_list.h: Switch to bits/version.h for __cpp_lib_list_remove_return_type. (__remove_return_type, _GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG) [C++20]: guard behind __cpp_lib_list_remove_return_type instead. * include/bits/stl_iterator.h: Switch to bits/version.h for __cpp_lib_{constexpr_iterator,array_constexpr} and __cpp_lib_{make_reverse_iterator,move_iterator_concept}. (make_reverse_iterator): Guard behind __cpp_lib_make_reverse_iterator. (iterator_concept et al): Guard __cpp_lib_move_iterator_concept changes behind that FTM. * include/bits/stl_function.h: Switch to bits/version.h for __cpp_lib_transparent_operators. (equal_to, not_equal_to, greater, less, greater_equal) (less_equal, bit_and, bit_or, bit_xor, bit_not, logical_and) (logical_or, logical_not, plus, minus, multiplies, divides) (modulus, negate): Guard '= void' fwdecls behind __cpp_lib_transparent_operators. (plus<void>, minus<void>, multiplies<void>, divides<void>) (modulus<void>, negate<void>, logical_and<void>, logical_or<void>) (logical_not<void>, bit_and<void>, bit_or<void>, bit_xor<void>) (equal_to<void>, not_equal_to<void>, greater<void>, less<void>) (greater_equal<void>, less_equal<void>, bit_not<void>) (__has_is_transparent): Guard behind __cpp_lib_transparent_operators. * include/bits/stl_algobase.h: Switch to bits/version.h for __cpp_lib_robust_nonmodifying_seq_ops. (robust equal, mismatch): Guard behind __cpp_lib_nonmember_container_access. * include/bits/stl_algo.h: Swtich to bits/version.h for __cpp_lib_{clamp,sample}. (clamp): Guard behind __cpp_lib_clamp. (sample): Guard behind __cpp_lib_sample. * include/bits/specfun.h: Switch to bits/version.h for __cpp_lib_math_special_functions and __STDCPP_MATH_SPEC_FUNCS__. * include/bits/shared_ptr_base.h: Switch to bits/version.h for __cpp_lib_{smart_ptr_for_overwrite,shared_ptr_arrays}. (_Sp_overwrite_tag): Guard behind __cpp_lib_smart_ptr_for_overwrite. * include/bits/shared_ptr_atomic.h: Switch to bits/version.h for __cpp_lib_atomic_shared_ptr. * include/bits/shared_ptr.h: Switch to bits/version.h for __cpp_lib_{enable_shared_from_this,shared_ptr_weak_type}. (shared_ptr<T>::weak_type): Guard behind __cpp_lib_shared_ptr_weak_type. (enable_shared_from_this<T>::weak_from_this): Guard behind __cpp_lib_enable_shared_from_this. * include/bits/ranges_cmp.h: Switch to bits/version.h for __cpp_lib_ranges. * include/bits/ranges_algo.h: Switch to bits/version.h for __cpp_lib_{shift,ranges_{contains,find_last,fold,iota}}. * include/bits/range_access.h: Switch to bits/version.h for __cpp_lib_nonmember_container_access (size, empty, data): Guard behind __cpp_lib_nonmember_container_access. (ssize): Guard behind __cpp_lib_ssize. * include/bits/ptr_traits.h: Switch to bits/version.h. for __cpp_lib_{constexpr_memory,to_address}. (to_address): Guard behind __cpp_lib_to_address. * include/bits/node_handle.h: Switch to bits/version.h for __cpp_lib_node_extract. Guard header behind that FTM. * include/bits/move_only_function.h: Switch to bits/version.h for __cpp_lib_move_only_function. Guard header behind that FTM. * include/bits/move.h: Switch to bits/version.h for __cpp_lib_addressof_constexpr. * include/bits/ios_base.h: Switch to bits/version.h for __cpp_lib_ios_noreplace. (noreplace): Guard with __cpp_lib_ios_noreplace. * include/bits/hashtable.h: Switch to bits/version.h for __cpp_lib_generic_unordered_lookup. (_M_equal_range_tr, _M_count_tr, _M_find_tr): Guard behind __cpp_lib_generic_unordered_lookup. * include/bits/forward_list.h: Switch to bits/version.h for __cpp_lib_list_remove_return_type. (__remove_return_type): Guard behind __cpp_lib_list_remove_return_type. * include/bits/erase_if.h: Switch to bits/version.h for __cpp_lib_erase_if. * include/bits/cow_string.h: Switch to bits/version.h for __cpp_lib_constexpr_string. * include/bits/chrono.h: Swtich to bits/version.h for __cpp_lib_chrono{,_udls}. (ceil): Guard behind __cpp_lib_chrono. (operator""ns et al): Guard behind __cpp_lib_chrono_udls. * include/bits/char_traits.h: Switch to bits/version.h for __cpp_lib_constexpr_char_traits. * include/bits/basic_string.h: Switch to bits/version.h for __cpp_lib_{constexpr_string,string_{resize_and_overwrite,udls}}. (resize_and_overwrite): Guard behind __cpp_lib_string_resize_and_overwrite. (operator""s): Guard behind __cpp_lib_string_udls. * include/bits/atomic_wait.h: Switch to bits/version.h for __cpp_lib_atomic_wait. Guard header behind that FTM. * include/bits/atomic_base.h: Switch to bits/version.h for __cpp_lib_atomic_value_initialization and __cpp_lib_atomic_flag_test. (atomic_flag::test): Guard behind __cpp_lib_atomic_flag_test, rather than C++20. * include/bits/allocator.h: Switch to bits/version.h for __cpp_lib_incomplete_container_elements. * include/bits/alloc_traits.h: Switch to using bits/version.h for __cpp_lib_constexpr_dynamic_alloc and __cpp_lib_allocator_traits_is_always_equal. * include/bits/align.h: Switch to bits/version.h for defining __cpp_lib_assume_aligned. (assume_aligned): Guard with __cpp_lib_assume_aligned. * include/bits/algorithmfwd.h: Switch to bits/version.h for defining __cpp_lib_constexpr_algorithms. * include/std/stacktrace: Switch to bits/version.h for __cpp_lib_stacktrace. Guard header behind that FTM. * testsuite/23_containers/array/tuple_interface/get_neg.cc: Update line numbers.
2023-01-14libstdc++: Deliver names of C functions in <stacktrace>Björn Schäpers1-0/+2
__cxa_demangle is only to demangle C++ names, for all C functions, extern "C" functions, and including main it returns -2, in that case just adapt the given name. Otherwise it's kept empty, which doesn't look nice in the stacktrace. libstdc++-v3/ChangeLog: * include/std/stacktrace (stacktrace_entry::_S_demangle): Use raw __name if __cxa_demangle could not demangle it. Signed-off-by: Björn Schäpers <bjoern@hazardy.de>
2022-12-14libstdc++: Fix size passed to operator delete [PR108097]Jonathan Wakely1-2/+4
The number of elements gets stored in _M_capacity so use a separate variable for the number of bytes to allocate. libstdc++-v3/ChangeLog: PR libstdc++/108097 * include/std/stacktrace (basic_stracktrace::_Impl): Do not multiply N by sizeof(value_type) when allocating.
2022-12-12libstdc++: Make operator<< for stacktraces less templated (LWG 3515)Jonathan Wakely1-21/+17
This change was approved for C++23 last month. libstdc++-v3/ChangeLog: * include/std/stacktrace (operator<<): Only output to narrow ostreams (LWG 3515). * testsuite/19_diagnostics/stacktrace/synopsis.cc:
2022-12-02libstdc++: Add error handler for <stacktrace>Björn Schäpers1-7/+12
Not providing an error handler results in a null pointer dereference when an error occurs. Co-authored-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/std/stacktrace (stacktrace_entry::_S_err_handler): New static function. (stacktrace_entry, basic_stacktrace): Pass &_S_err_handler to all calls to libbacktrace.
2022-10-03libstdc++: Mark headers that must be hosted as such [PR103626]Arsen Arsenović1-0/+2
PR libstdc++/103626 - _GLIBCXX_HOSTED should respect -ffreestanding Co-authored-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: PR libstdc++/103626 * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/bits/requires_hosted.h: New header. * include/experimental/algorithm: Include <bits/requires_hosted.h>. * include/experimental/any: Likewise. * include/experimental/array: Likewise. * include/experimental/buffer: Likewise. * include/experimental/chrono: Likewise. * include/experimental/deque: Likewise. * include/experimental/executor: Likewise. * include/experimental/filesystem: Likewise. * include/experimental/forward_list: Likewise. * include/experimental/functional: Likewise. * include/experimental/internet: Likewise. * include/experimental/io_context: Likewise. * include/experimental/iterator: Likewise. * include/experimental/list: Likewise. * include/experimental/map: Likewise. * include/experimental/memory: Likewise. * include/experimental/memory_resource: Likewise. * include/experimental/net: Likewise. * include/experimental/netfwd: Likewise. * include/experimental/numeric: Likewise. * include/experimental/optional: Likewise. * include/experimental/propagate_const: Likewise. * include/experimental/random: Likewise. * include/experimental/ratio: Likewise. * include/experimental/regex: Likewise. * include/experimental/scope: Likewise. * include/experimental/set: Likewise. * include/experimental/simd: Likewise. * include/experimental/socket: Likewise. * include/experimental/source_location: Likewise. * include/experimental/string: Likewise. * include/experimental/string_view: Likewise. * include/experimental/system_error: Likewise. * include/experimental/timer: Likewise. * include/experimental/tuple: Likewise. * include/experimental/unordered_map: Likewise. * include/experimental/unordered_set: Likewise. * include/experimental/utility: Likewise. * include/experimental/vector: Likewise. * include/std/barrier: Likewise. * include/std/chrono: Likewise. * include/std/condition_variable: Likewise. * include/std/deque: Likewise. * include/std/execution: Likewise. * include/std/filesystem: Likewise. * include/std/forward_list: Likewise. * include/std/fstream: Likewise. * include/std/future: Likewise. * include/std/iomanip: Likewise. * include/std/ios: Likewise. * include/std/iosfwd: Likewise. * include/std/iostream: Likewise. * include/std/istream: Likewise. * include/std/latch: Likewise. * include/std/list: Likewise. * include/std/locale: Likewise. * include/std/map: Likewise. * include/std/memory_resource: Likewise. * include/std/mutex: Likewise. * include/std/ostream: Likewise. * include/std/queue: Likewise. * include/std/random: Likewise. * include/std/regex: Likewise. * include/std/semaphore: Likewise. * include/std/set: Likewise. * include/std/shared_mutex: Likewise. * include/std/spanstream: Likewise. * include/std/sstream: Likewise. * include/std/stack: Likewise. * include/std/stacktrace: Likewise. * include/std/stop_token: Likewise. * include/std/streambuf: Likewise. * include/std/string: Likewise. * include/std/syncstream: Likewise. * include/std/system_error: Likewise. * include/std/thread: Likewise. * include/std/unordered_map: Likewise. * include/std/unordered_set: Likewise. * include/std/valarray: Likewise. * include/std/vector: Likewise. * include/tr1/array: Likewise. * include/tr1/ccomplex: Likewise. * include/tr1/cctype: Likewise. * include/tr1/cfenv: Likewise. * include/tr1/cfloat: Likewise. * include/tr1/cinttypes: Likewise. * include/tr1/climits: Likewise. * include/tr1/cmath: Likewise. * include/tr1/complex: Likewise. * include/tr1/complex.h: Likewise. * include/tr1/cstdarg: Likewise. * include/tr1/cstdbool: Likewise. * include/tr1/cstdint: Likewise. * include/tr1/cstdio: Likewise. * include/tr1/cstdlib: Likewise. * include/tr1/ctgmath: Likewise. * include/tr1/ctime: Likewise. * include/tr1/ctype.h: Likewise. * include/tr1/cwchar: Likewise. * include/tr1/cwctype: Likewise. * include/tr1/fenv.h: Likewise. * include/tr1/float.h: Likewise. * include/tr1/functional: Likewise. * include/tr1/inttypes.h: Likewise. * include/tr1/limits.h: Likewise. * include/tr1/math.h: Likewise. * include/tr1/memory: Likewise. * include/tr1/random: Likewise. * include/tr1/regex: Likewise. * include/tr1/stdarg.h: Likewise. * include/tr1/stdbool.h: Likewise. * include/tr1/stdint.h: Likewise. * include/tr1/stdio.h: Likewise. * include/tr1/stdlib.h: Likewise. * include/tr1/tgmath.h: Likewise. * include/tr1/tuple: Likewise. * include/tr1/type_traits: Likewise. * include/tr1/unordered_map: Likewise. * include/tr1/unordered_set: Likewise. * include/tr1/utility: Likewise. * include/tr1/wchar.h: Likewise. * include/tr1/wctype.h: Likewise. * include/c_global/cmath: Likewise. * include/ext/algorithm: Include <bits/requires_hosted.h>. * include/ext/bitmap_allocator.h: Likewise. * include/ext/cmath: Likewise. * include/ext/codecvt_specializations.h: Likewise. * include/ext/debug_allocator.h: Likewise. * include/ext/enc_filebuf.h: Likewise. * include/ext/extptr_allocator.h: Likewise. * include/ext/functional: Likewise. * include/ext/malloc_allocator.h: Likewise. * include/ext/memory: Likewise. * include/ext/mt_allocator.h: Likewise. * include/ext/new_allocator.h: Likewise. * include/ext/numeric: Likewise. * include/ext/pod_char_traits.h: Likewise. * include/ext/pool_allocator.h: Likewise. * include/ext/random: Likewise. * include/ext/random.tcc: Likewise. * include/ext/rb_tree: Likewise. * include/ext/rc_string_base.h: Likewise. * include/ext/rope: Likewise. * include/ext/ropeimpl.h: Likewise. * include/ext/slist: Likewise. * include/ext/sso_string_base.h: Likewise. * include/ext/stdio_filebuf.h: Likewise. * include/ext/stdio_sync_filebuf.h: Likewise. * include/ext/string_conversions.h: Likewise. * include/ext/throw_allocator.h: Likewise. * include/ext/vstring.h: Likewise. * include/ext/vstring.tcc: Likewise. * include/ext/vstring_fwd.h: Likewise. * include/ext/vstring_util.h: Likewise. * include/std/charconv: Likewise. (__cpp_lib_to_chars): Do not define for freestanding. * include/std/version: Adjust which macros get defined in freestanding. * include/ext/pointer.h [!_GLIBCXX_HOSTED]: Omit iostream functionality from freestanding. * include/std/algorithm [!_GLIBCXX_HOSTED]: Omit PSTL algos. * include/std/memory [!_GLIBCXX_HOSTED]: Omit <bits/stl_tempbuf.h> in freestanding * include/bits/algorithmfwd.h [!_GLIBCXX_HOSTED]: Omit leftover random_shuffle and stable_partition definition. * include/bits/stl_algo.h [!_GLIBCXX_HOSTED]: Omit random_shuffle and stable_partition from freestanding. * include/bits/ranges_algo.h [!_GLIBCXX_HOSTED]: Omit stable_partition from freestanding. * include/bits/concept_check.h: Remove needless HOSTED check. * include/std/iterator: Include <bits/ranges_base.h>. * include/std/numeric (__cpp_lib_parallel_algorithms): Do not define for freestanding. * include/std/functional (__cpp_lib_boyer_moore_searcher): Likewise. * testsuite/lib/prune.exp: Match error for hosted-only libstdc++ tests.
2022-05-19libstdc++: Avoid including <cstdint> for std::char_traitsJonathan Wakely1-6/+7
We should prefer the __UINT_LEAST16_TYPE__ and __UINT_LEAST32_TYPE__ macros, if available, so that we don't need all of <cstdint> in every header that uses std::char_traits. libstdc++-v3/ChangeLog: * include/bits/char_traits.h: Only include <cstdint> when necessary. * include/std/stacktrace: Use __UINTPTR_TYPE__ instead of uintptr_t. * src/c++11/cow-stdexcept.cc: Include <stdint.h>. * src/c++17/floating_to_chars.cc: Likewise. * testsuite/20_util/assume_aligned/1.cc: Include <cstdint>. * testsuite/20_util/assume_aligned/3.cc: Likewise. * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
2022-05-19libstdc++: Ensure pmr aliases work without <memory_resource>Jonathan Wakely1-1/+1
Currently the alias templates for std::pmr::vector, std::pmr::string etc. are defined using a forward declaration for polymorphic_allocator. This means you can't actually use the alias templates unless you also include <memory_resource>. The rationale for that is that it's a fairly large header, and most users don't need it. This isn't uncontroversial though, and LWG 3681 questions whether it's even conforming. This change adds a new <bits/memory_resource.h> header with the minimum needed to use polymorphic_allocator and the std::pmr container aliases. Including <memory_resource> is still necessary to use the program-wide resource objects, or the pool resources or monotonic buffer resource. libstdc++-v3/ChangeLog: * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/bits/memory_resource.h: New file. * include/std/deque: Include <bits/memory_resource.h>. * include/std/forward_list: Likewise. * include/std/list: Likewise. * include/std/map: Likewise. * include/std/memory_resource (pmr::memory_resource): Move to new <bits/memory_resource.h> header. (pmr::polymorphic_allocator): Likewise. * include/std/regex: Likewise. * include/std/set: Likewise. * include/std/stacktrace: Likewise. * include/std/string: Likewise. * include/std/unordered_map: Likewise. * include/std/unordered_set: Likewise. * include/std/vector: Likewise. * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Remove <memory_resource> header and check construction. * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise. * testsuite/23_containers/forward_list/pmr_typedefs.cc: Likewise. * testsuite/23_containers/list/pmr_typedefs.cc: Likewise. * testsuite/23_containers/map/pmr_typedefs.cc: Likewise. * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise. * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise. * testsuite/23_containers/set/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_map/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_set/pmr_typedefs.cc: Likewise. * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise. * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/variadic-tuple.C: Qualify function to avoid ADL finding std::make_tuple.
2022-05-06libstdc++: Do not include <cxxabi.h> in <stacktrace>Jonathan Wakely1-1/+7
This avoids polluting the global namespace with the "abi" namespace alias. libstdc++-v3/ChangeLog: * include/std/stacktrace: Do not include <cxxabi.h>. (__cxa_demangle): Declare.
2022-04-12libstdc++: shrink-to-fit in std::basic_stacktrace::current(skip, max)Jonathan Wakely1-1/+14
If a large stacktrace is reduced to a max depth that is less than half the capacity it will now be reallocated to remove the unused capacity. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::current): Reallocate a smaller container if the unused capacity is larger than the used size.
2022-04-12libstdc++: Use allocator to construct std::stacktrace_entry objectsJonathan Wakely1-45/+47
Because std::basic_stacktrace<A> is an allocator-aware container its elements should be initialized using allocator_traits<A>::construct and destroyed using allocator_traits<A>::destroy. This adds new _M_clone and _M_assign helper functions to construct elements correctly and uses those functions instead of calling std::uninitialized_copy_n. The _Impl::_M_destroy function needs to be passed an allocator to destroy the elements correctly, so is replaced by _M_resize which can also be used to trim the container to a smaller size. Because destroying and creating std::stacktrace_entry objects is cheap, the copy/move assignment operators can just destroy all existing elements and use _Impl._M_clone or _Impl._M_assign to create new ones. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace): Use _Impl::_M_clone or _Impl::_M_assign to initialize elements in allocated storage. (basic_stacktrace::_M_clear()): Use _Impl::_M_resize instead of _Impl::_M_destroy. (basic_stacktrace::_Impl::_M_destroy()): Replace with ... (basic_stacktrace::_Impl::_M_resize(size_type, allocator&)): New function. (basic_stacktrace::_Impl::_M_push_back): Use _M_xclone. Construct new element using allocator. (basic_stacktrace::_Impl::_M_clone): New function. (basic_stacktrace::_Impl::_M_xclone): New function. (basic_stacktrace::_Impl::_M_assign): New function.
2022-04-12libstdc++: Use nothrow new in std::stacktraceJonathan Wakely1-7/+35
We can avoid the overhead of handling a bad_alloc exception from std::allocator<std::stacktrace_entry>::allocate by just calling the nothrow operator new instead. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate): Use nothrow new instead of try block for std::allocator. (basic_stacktrace::_Impl::_M_deallocate): Use delete for std::allocator.
2022-04-12libstdc++: Reduce memory usage in std::stacktrace::currentJonathan Wakely1-48/+62
This adds an alternative callback for use in the overload of basic_stacktrace::current that takes a max_depth parameter. The new callback will not allow the container to grow past the initial capacity, which is set to the specified maximum depth. This avoids allocating memory for hundreds of frames only to discard them again because of a small maximum depth limit. For larger maximum depths the normal callback is used, with a smaller initial capacity that can grow as needed. The container will be resized to the given max depth after the entire backtrace has been produced (relying on the fact that std::stacktrace_entry objects are trivially destructible to elide their destruction). Currently the value for "larger" limits is 128, so a max depth <= 128 will allocate capacity for exactly that many frames. A larger max depth (or an unspecified max depth) will use an initial capacity of 64 frames and grow as needed. Since each frame is only a uintptr_t value it might be reasonable to increase the first value so that memory usage can be capped for larger maximum depths. This change also delays the creation of the libbacktrace state until we actually need it, so that the state is not created if allocation fails. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::current): Replace calls to _M_reserve and _S_curr_cb with call to _M_prepare. Check return value of backtrace_simple when max depth given. (basic_stacktrace::_M_reserve): Remove. (basic_stacktrace::_S_curr_cb): Remove. (basic_stacktrace::_M_prepare(size_type)): New function to reserve initial capacity and return callback. (basic_stacktrace::_Impl::_M_allocate): Remove check for 0 < n and remove redundant zeroing of _M_frames and _M_capacity. (basic_stacktrace::_Impl::_M_push_back): Add [[unlikely]] attribute. Assign _Impl instead of swapping. * testsuite/19_diagnostics/stacktrace/current.cc: New test.
2022-04-11libstdc++: Fix incorrect branch prediction hint in std::stacktraceJonathan Wakely1-1/+1
libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate): Change [[unlikely]] attribute to [[likely]].
2022-04-11libstdc++: Fix std::basic_stacktrace special members [PR105031]Jonathan Wakely1-22/+37
The PR points out that there is a non-constant condition used for an if-constexpr statement, but there are several other problems with the copy, move and swap members of std::basic_stacktrace. libstdc++-v3/ChangeLog: PR libstdc++/105031 * include/std/stacktrace (basic_stacktrace::basic_stacktrace): Fix allocator usage in constructors. (basic_stacktrace::operator=(const basic_stacktrace&)): Do not try to reallocate using const allocator. (basic_stacktrace::operator=(basic_stacktrace&&)): Fix if-constexpr with non-constant condition. Do not allocate new storage if allocator propagates. Do not set _M_size if allocation fails. (basic_stacktrace::swap(basic_stacktrace&)): Fix typo. Add assertion that non-propagating allocators are equal. * testsuite/19_diagnostics/stacktrace/stacktrace.cc: New test.
2022-04-11libstdc++: Improve behaviour of std::stacktrace::currentJonathan Wakely1-22/+69
This prevents inlining the current() function to guarantee that it is present in the stacktrace, then tells libbacktrace to skip that frame. To avoid overflow in the int argument to __glibcxx_backtrace_simple, we need to check if the skip parameter exceeds INT_MAX (which is possible for 16-bit targets where short and int have the same width). We also need to limit the size of the returned value to the max_depth parameter, which was missing previously. This also fixes basic_stacktrace::max_size() to not exceed the maximum size supported by the allocator, which might be smaller than the maximum value of size_type. libstdc++-v3/ChangeLog: * include/std/stacktrace (basic_stacktrace::current): Duplicate implementation into each overload. Add noinline attribute and skip current frame. (basic_stacktrace::max_size()): Call _Impl::_S_max_size. (basic_stacktrace::_S_curr_cb()): New function defining lambda. (basic_stacktrace::_Impl::_S_max_size): New function defining maximum size in terms of allocator and size_type. (basic_stacktrace::_Impl::_M_allocate): Check against max_size(). * testsuite/19_diagnostics/stacktrace/entry.cc: Call function for non-constexpr checks. Check line number is correct.
2022-01-17libstdc++: Define <stacktrace> header for C++23Jonathan Wakely1-0/+672
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.
generated by cgit v1.1 at 2026-01-08 07:18:09 +0000