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gcc/libstdc++-v3/include/bits
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Jonathan Wakely 778c28c70f libstdc++: Fix localized %c formatting for non-UTC times [PR117214] 
The previous commit fixed most cases of %c formatting, but it
incorrectly prints times using the system's local time zone. This only
matters if the locale's %c format includes %Z, but some do.

To print a correct value for %Z we can set tm.tm_zone to either "UTC" or
the abbreviation passed to the formatter in the local-time-format-t
structure.

For local times with no info and for systems that don't support tm_zone
(which is new in POSIX.1-2024) we just set tm_isdst = -1 so that no zone
name is printed.

In theory, a locale's %c format could use %z which should print a +hhmm
offset from UTC. I'm unsure how to control that though. The new
tm_gmtoff field in combination with tm_isdst != -1 seems like it should
work, but using that without also setting tm_zone causes the system zone
to be used for %Z again. That means local_time_format(lt, nullptr, &off)
might work for a locale that uses %z but prints the wrong thing for %Z.
This commit doesn't set tm_gmtoff even if _M_offset_sec is provided for
a local-time-format-t value.

libstdc++-v3/ChangeLog:

	PR libstdc++/117214
	* configure.ac: Use AC_STRUCT_TIMEZONE.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* include/bits/chrono_io.h (__formatter_chrono::_M_c): Set
	tm_isdst and tm_zone.
	* testsuite/std/time/format/pr117214.cc: Check %c formatting of
	zoned_time and local time.
2025-03-21 10:28:16 +00:00
..
algorithmfwd.h
libstdc++: add support for constexpr stable_sort (P2562R1)
2025-02-25 22:34:24 +00:00
align.h
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alloc_traits.h
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allocated_ptr.h
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allocator.h
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atomic_base.h
libstdc++: Remove misleading comment in __atomic_base<Int>
2025-02-22 21:20:19 +00:00
atomic_futex.h
libstdc++: Fix unused parameter warnings in <bits/atomic_futex.h>
2025-01-10 21:06:21 +00:00
atomic_timed_wait.h
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atomic_wait.h
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basic_ios.h
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basic_ios.tcc
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basic_string.h
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basic_string.tcc
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boost_concept_check.h
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c++0x_warning.h
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c++config
libstdc++: Avoid '-Wunused-parameter' for '__what' in function 'void std::__throw_format_error(const char*)'
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char_traits.h
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charconv.h
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chrono_io.h
libstdc++: Fix localized %c formatting for non-UTC times [PR117214]
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chrono.h
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codecvt.h
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concept_check.h
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cow_string.h
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cpp_type_traits.h
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deque.tcc
libstdc++: Fix std::deque::emplace calling wrong _M_insert_aux [PR90389]
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elements_of.h
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enable_special_members.h
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erase_if.h
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forward_list.h
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forward_list.tcc
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fs_dir.h
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fs_fwd.h
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fs_ops.h
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fs_path.h
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fstream.tcc
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functexcept.h
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functional_hash.h
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gslice_array.h
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gslice.h
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hashtable_policy.h
libstdc++: [_Hashtable] Fix hash code cache usage when stateful hash functor
2025-02-25 22:27:14 +01:00
hashtable.h
libstdc++: Add P1206R7 from_range members to unordered sets [PR111055]
2025-03-18 15:12:53 +01:00
indirect_array.h
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invoke.h
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ios_base.h
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istream.tcc
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iterator_concepts.h
libstdc++: Fix ranges::iter_move handling of rvalues [PR106612]
2025-02-28 21:48:01 +00:00
list.tcc
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locale_classes.h
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locale_classes.tcc
libstdc++: Handle errors from strxfrm in std::collate::transform [PR85824]
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locale_conv.h
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locale_facets_nonio.h
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locale_facets_nonio.tcc
libstdc++: Fix "IEE" typo in comment in std::time_put::do_put
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locale_facets.h
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locale_facets.tcc
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localefwd.h
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mask_array.h
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max_size_type.h
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memory_resource.h
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memoryfwd.h
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mofunc_impl.h
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monostate.h
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move_only_function.h
libstdc++: #ifdef out #pragma GCC system_header
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move.h
libstdc++: Add always_inline to casting/forwarding functions in bits/move.h
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new_allocator.h
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node_handle.h
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ostream_insert.h
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ostream.h
libstdc++: Handle exceptions in std::ostream::sentry destructor
2025-02-07 14:53:30 +00:00
ostream.tcc
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out_ptr.h
libstdc++: #ifdef out #pragma GCC system_header
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parse_numbers.h
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postypes.h
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predefined_ops.h
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ptr_traits.h
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quoted_string.h
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random.h
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random.tcc
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range_access.h
libstdc++: Add conditional noexcept to remaining range access functions
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ranges_algo.h
libstdc++: add support for constexpr stable_sort (P2562R1)
2025-02-25 22:34:24 +00:00
ranges_algobase.h
libstdc++: Fix ranges::move and ranges::move_backward to use iter_move [PR105609]
2025-02-28 21:35:27 +00:00
ranges_base.h
libstdc++: Support maps deduction from_range of tuples.
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ranges_cmp.h
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ranges_uninitialized.h
libstdc++: implement constexpr memory algorithms
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ranges_util.h
libstdc++: Make range adaptor __has_arrow helper use a const type
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refwrap.h
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regex_automaton.h
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regex_automaton.tcc
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regex_compiler.h
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regex_compiler.tcc
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regex_constants.h
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regex_error.h
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regex_executor.h
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regex_executor.tcc
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regex_scanner.h
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regex_scanner.tcc
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regex.h
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regex.tcc
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requires_hosted.h
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sat_arith.h
libstdc++: #ifdef out #pragma GCC system_header
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semaphore_base.h
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shared_ptr_atomic.h
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shared_ptr_base.h
libstdc++: fix compile error when converting std::weak_ptr<T[]>
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shared_ptr.h
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slice_array.h
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specfun.h
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sstream.tcc
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std_abs.h
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std_function.h
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std_mutex.h
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std_thread.h
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stl_algo.h
libstdc++: use if consteval in stable_sort
2025-03-05 17:59:18 +01:00
stl_algobase.h
libstdc++: Simplify __memcpyable_iterators concept
2025-03-08 10:39:56 +00:00
stl_bvector.h
libstdc++: Fix return value of vector::insert_range
2025-01-31 15:53:10 -05:00
stl_construct.h
libstdc++: implement constexpr memory algorithms
2025-03-05 09:58:29 +01:00
stl_deque.h
libstdc++: Fix std::deque::emplace calling wrong _M_insert_aux [PR90389]
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stl_function.h
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stl_heap.h
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stl_iterator_base_funcs.h
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stl_iterator_base_types.h
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stl_iterator.h
libstdc++: Fix constraint recursion in basic_const_iterator relops [PR112490]
2025-02-28 09:39:57 -05:00
stl_list.h
libstdc++: Add assertions to std::list::pop_{front,back}
2025-03-06 16:17:34 +00:00
stl_map.h
libstdc++: Add P1206R7 from_range members to ordered maps [PR111055]
2025-03-18 13:07:00 +01:00
stl_multimap.h
libstdc++: Add P1206R7 from_range members to ordered maps [PR111055]
2025-03-18 13:07:00 +01:00
stl_multiset.h
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stl_numeric.h
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stl_pair.h
libstdc++: implement tuple protocol for std::complex (P2819R2)
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stl_queue.h
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stl_raw_storage_iter.h
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stl_relops.h
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stl_set.h
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stl_stack.h
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stl_tempbuf.h
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stl_tree.h
libstdc++: Fix use of make_pair that used ADL
2025-02-14 15:33:12 +00:00
stl_uninitialized.h
libstdc++: implement constexpr memory algorithms
2025-03-05 09:58:29 +01:00
stl_vector.h
libstdc++: Simplify std::vector::vector(from_range_t, const Alloc&)
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stream_iterator.h
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streambuf_iterator.h
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streambuf.tcc
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string_view.tcc
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stringfwd.h
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text_encoding-data.h
libstdc++: Fix Python scripts to output the correct filename
2024-03-19 15:20:07 +00:00
this_thread_sleep.h
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unicode-data.h
contrib, libcpp, libstdc++: Update to Unicode 16.0
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unicode.h
libstdc++: Add parentheses around operand of |
2024-11-11 18:57:16 +00:00
uniform_int_dist.h
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unique_lock.h
libstdc++: Make std::unique_lock self-move-assignable
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unique_ptr.h
libstdc++: Prevent dangling references in std::unique_ptr::operator*
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unordered_map.h
libstdc++-v3: Implement allocator-aware from_range_t constructors for unordered containers.
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unordered_set.h
libstdc++-v3: Implement allocator-aware from_range_t constructors for unordered containers.
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uses_allocator_args.h
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uses_allocator.h
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utility.h
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valarray_after.h
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valarray_array.h
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valarray_array.tcc
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valarray_before.h
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vector.tcc
libstdc++: Fix return value of vector::insert_range
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version.def
libstdc++: Implement P3137R3 views::to_input for C++26
2025-03-12 16:09:42 -04:00
version.h
libstdc++: Implement P3137R3 views::to_input for C++26
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version.tpl
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