27 Commits

Author SHA1 Message Date
Jakub Jelinek
254a858ae7 Update copyright years. 2026-01-02 09:56:11 +01:00
Jakub Jelinek
6441eb6dc0 Update copyright years. 2025-01-02 11:59:57 +01:00
Jason Merrill
63a598deb0 libstdc++: #ifdef out #pragma GCC system_header
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.
2024-09-25 08:20:45 -04:00
Jonathan Wakely
c2e28df90a libstdc++: Destroy allocators in re-inserted container nodes [PR114401]
The allocator objects in container node handles were not being destroyed
after the node was re-inserted into a container. They are stored in a
union and so need to be explicitly destroyed when the node becomes
empty. The containers were zeroing the node handle's pointer, which
makes it empty, causing the handle's destructor to think there's nothign
to clean up.

Add a new member function to the node handle which destroys the
allocator and zeros the pointer. Change the containers to call that
instead of just changing the pointer manually.

We can also remove the _M_empty member of the union which is not
necessary.

libstdc++-v3/ChangeLog:

	PR libstdc++/114401
	* include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
	release() on node handle instead of just zeroing its pointer.
	(_Hashtable::_M_reinsert_node_multi): Likewise.
	(_Hashtable::_M_merge_unique): Likewise.
	(_Hashtable::_M_merge_multi): Likewise.
	* include/bits/node_handle.h (_Node_handle_common::release()):
	New member function.
	(_Node_handle_common::_Optional_alloc::_M_empty): Remove
	unnecessary union member.
	(_Node_handle_common): Declare _Hashtable as a friend.
	* include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
	Call release() on node handle instead of just zeroing its
	pointer.
	(_Rb_tree::_M_reinsert_node_equal): Likewise.
	(_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
	(_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
	* testsuite/23_containers/multiset/modifiers/114401.cc: New test.
	* testsuite/23_containers/set/modifiers/114401.cc: New test.
	* testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
	* testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.
2024-03-22 22:39:06 +00:00
Jakub Jelinek
a945c346f5 Update copyright years. 2024-01-03 12:19:35 +01:00
Jonathan Wakely
7ffa63df8f libstdc++: Only declare feature test macros in standard headers
This change moves the definitions of feature test macros (or strictly
speaking, the requests for <bits/version.h> to define them) so that only
standard headers define them. For example, <bits/shared_ptr.h> will no
longer define macros related to std::shared_ptr, only <memory> and
<version> will define them. This means that __cpp_lib_shared_ptr_arrays
will not be defined by <future> or by other headers that include
<bits/shared_ptr.h>. It will only be defined when <memory> has been
included. This will discourage users from relying on transitive
includes.

As a result, internal headers that need to query the macros should use
the internal macros like __glibcxx_shared_ptr_arrays instead of
__cpp_lib_shared_ptr_arrays, as those internal macros are defined by the
internal headers after icluding <bits/version.h>. There are some
exceptions to this rule, because __cpp_lib_is_constant_evaluated is
defined by bits/c++config.h and so is available everywhere, and
__cpp_lib_three_way_comparison is defined by <compare> which several
headers are explicitly specified to include, so its macro is guaranteed
to be usable too.

N.B. not many internal headers actually need an explicit include of
<bits/version.h>, because most of them include <type_traits> and so get
all the __glibcxx_foo internal macros from there.

libstdc++-v3/ChangeLog:

	* include/bits/algorithmfwd.h: Do not define standard feature
	test macro here.
	* include/bits/align.h: Likewise. Test internal macros instead
	of standard macros.
	* include/bits/alloc_traits.h: Likewise.
	* include/bits/allocator.h: Likewise.
	* include/bits/atomic_base.h: Likewise.
	* include/bits/atomic_timed_wait.h: Likewise.
	* include/bits/atomic_wait.h: Likewise.
	* include/bits/basic_string.h: Likewise.
	* include/bits/basic_string.tcc: Likewise.
	* include/bits/char_traits.h: Likewise.
	* include/bits/chrono.h: Likewise.
	* include/bits/cow_string.h: Likewise.
	* include/bits/forward_list.h: Likewise.
	* include/bits/hashtable.h: Likewise.
	* include/bits/ios_base.h: Likewise.
	* include/bits/memory_resource.h: Likewise.
	* include/bits/move.h: Likewise.
	* include/bits/move_only_function.h: Likewise.
	* include/bits/node_handle.h: Likewise.
	* include/bits/ptr_traits.h: Likewise.
	* include/bits/range_access.h: Likewise.
	* include/bits/ranges_algo.h: Likewise.
	* include/bits/ranges_cmp.h: Likewise.
	* include/bits/ranges_util.h: Likewise.
	* include/bits/semaphore_base.h: Likewise.
	* include/bits/shared_ptr.h: Likewise.
	* include/bits/shared_ptr_atomic.h: Likewise.
	* include/bits/shared_ptr_base.h: Likewise.
	* include/bits/stl_algo.h: Likewise.
	* include/bits/stl_algobase.h: Likewise.
	* include/bits/stl_function.h: Likewise.
	* include/bits/stl_iterator.h: Likewise.
	* include/bits/stl_list.h: Likewise.
	* include/bits/stl_map.h: Likewise.
	* include/bits/stl_pair.h: Likewise.
	* include/bits/stl_queue.h: Likewise.
	* include/bits/stl_stack.h: Likewise.
	* include/bits/stl_tree.h: Likewise.
	* include/bits/stl_uninitialized.h: Likewise.
	* include/bits/stl_vector.h: Likewise.
	* include/bits/unique_ptr.h: Likewise.
	* include/bits/unordered_map.h: Likewise.
	* include/bits/uses_allocator_args.h: Likewise.
	* include/bits/utility.h: Likewise.
	* include/bits/erase_if.h: Add comment.
	* include/std/algorithm: Define standard feature test macros
	here.
	* include/std/atomic: Likewise.
	* include/std/array: Likewise.
	* include/std/chrono: Likewise.
	* include/std/condition_variable: Likewise.
	* include/std/deque: Likewise.
	* include/std/format: Likewise.
	* include/std/functional: Likewise.
	* include/std/forward_list: Likewise.
	* include/std/ios: Likewise.
	* include/std/iterator: Likewise.
	* include/std/list: Likewise.
	* include/std/map: Likewise.
	* include/std/memory: Likewise.
	* include/std/numeric: Likewise.
	* include/std/queue: Likewise.
	* include/std/ranges: Likewise.
	* include/std/regex: Likewise.
	* include/std/set: Likewise.
	* include/std/stack: Likewise.
	* include/std/stop_token: Likewise.
	* include/std/string: Likewise.
	* include/std/string_view:
	* include/std/tuple: Likewise.
	* include/std/unordered_map:
	* include/std/unordered_set:
	* include/std/utility: Likewise.
	* include/std/vector: Likewise.
	* include/std/scoped_allocator: Query internal macros instead of
	standard macros.
2023-11-16 08:10:19 +00:00
Arsen Arsenović
083b7f2833 libstdc++: Replace all manual FTM definitions and use
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.
2023-08-16 15:16:25 +02:00
Jakub Jelinek
83ffe9cde7 Update copyright years. 2023-01-16 11:52:17 +01:00
Jonathan Wakely
b8806796ec libstdc++: Ensure all feature test macros have type long [PR87193]
This defines all the __cpp_lib_xxx macros as type long, as required by
the standard. We had an inconsistent mix of int and long, sometimes even
for the same macro name.

The __cpp_lib_experimental_xxx macros are left as type int, because
that's what it says in the relevant TS specs.

libstdc++-v3/ChangeLog:

	PR libstdc++/87193
	PR libstdc++/104019
	* include/bits/alloc_traits.h (__cpp_lib_allocator_traits_is_always_equal):
	Define as type long.
	* include/bits/allocator.h (__cpp_lib_incomplete_container_elements):
	Likewise.
	* include/bits/basic_string.h (__cpp_lib_string_udls): Likewise.
	* include/bits/chrono.h (__cpp_lib_chrono): Likewise.
	(__cpp_lib_chrono_udls): Likewise.
	* include/bits/move.h (__cpp_lib_addressof_constexpr): Likewise.
	* include/bits/node_handle.h (__cpp_lib_node_extract): Likewise.
	* include/bits/range_access.h (__cpp_lib_nonmember_container_access):
	Likewise.
	* include/bits/shared_ptr.h (__cpp_lib_enable_shared_from_this):
	Likewise.
	* include/bits/stl_algo.h (__cpp_lib_clamp): Likewise.
	(__cpp_lib_sample): Likewise.
	* include/bits/stl_algobase.h (__cpp_lib_robust_nonmodifying_seq_ops):
	Likewise.
	* include/bits/stl_function.h (__cpp_lib_transparent_operators):
	Likewise.
	* include/bits/stl_iterator.h (__cpp_lib_make_reverse_iterator):
	Likewise.
	* include/bits/stl_map.h (__cpp_lib_map_try_emplace):
	Likewise.
	* include/bits/stl_tree.h (__cpp_lib_generic_associative_lookup):
	Likewise.
	* include/bits/unique_ptr.h (__cpp_lib_make_unique):
	Likewise.
	* include/bits/unordered_map.h (__cpp_lib_unordered_map_try_emplace):
	Likewise.
	* include/c_global/cmath (__cpp_lib_hypot): Likewise.
	* include/c_global/cstddef (__cpp_lib_byte): Likewise.
	* include/std/atomic (__cpp_lib_atomic_is_always_lock_free):
	Likewise.
	* include/std/complex (__cpp_lib_complex_udls): Likewise.
	* include/std/filesystem (__cpp_lib_filesystem): Likewise.
	* include/std/functional (__cpp_lib_not_fn): Likewise.
	(__cpp_lib_boyer_moore_searcher): Likewise.
	* include/std/iomanip (__cpp_lib_quoted_string_io): Likewise.
	* include/std/mutex (__cpp_lib_scoped_lock): Likewise.
	* include/std/numeric (__cpp_lib_gcd_lcm): Likewise.
	(__cpp_lib_gcd, __cpp_lib_lcm): Likewise.
	* include/std/tuple (__cpp_lib_apply): Likewise.
	(__cpp_lib_make_from_tuple): Likewise.
	* include/std/type_traits (__cpp_lib_integral_constant_callable)
	(__cpp_lib_bool_constant, __cpp_lib_logical_traits)
	(__cpp_lib_is_null_pointer, __cpp_lib_transformation_trait_aliases)
	(__cpp_lib_result_of_sfinae, __cpp_lib_void_t)
	(__cpp_lib_is_swappable, __cpp_lib_is_invocable)
	(__cpp_lib_has_unique_object_representations)
	(__cpp_lib_is_aggregate): Likewise.
	* include/std/version: Likewise.
	* libsupc++/new (__cpp_lib_launder): Likewise.
2022-01-21 16:07:34 +00:00
Jakub Jelinek
7adcbafe45 Update copyright years. 2022-01-03 10:42:10 +01:00
Jonathan Wakely
6667d5feb9 libstdc++: Suppress Doxygen docs for more implementation details
libstdc++-v3/ChangeLog:

	* include/bits/alloc_traits.h: Suppress doxygen documentation.
	* include/bits/allocated_ptr.h: Likewise.
	* include/bits/enable_special_members.h: Likewise.
	* include/bits/hashtable.h: Likewise.
	* include/bits/hashtable_policy.h: Likewise.
	* include/bits/uses_allocator.h: Likewise.
	* include/bits/node_handle.h: Document node handles and suppress
	documentation for protected members.
	* include/std/any: Suppress documentation for implementation
	details.
2021-10-21 22:23:00 +01:00
Jakub Jelinek
99dee82307 Update copyright years. 2021-01-04 10:26:59 +01:00
Jonathan Wakely
aa6d2be1e3 libstdc++: Optimize container node-handle type for size
The use of std::optional in _Node_handle makes the node handle types for
associative and unordered containers larger than necessary. It also
greatly increases the amount of code included, as <optional> is quite
large.

The boolean flag that records whether the std::optional contains a value
is redundant, because the _Node_handle::_M_ptr member provides the same
information. If the node handle has a non-null pointer it also has an
allocator, and not otherwise. By replacing std::optional with a custom
union type (and using _M_ptr to tell which union member is active) all
node handle sizes can be reduced by sizeof(allocator_type::pointer).

This makes the node handle types incompatible with previous releases, so
must be done before the C++17 ABI is fixed for GCC 11.

libstdc++-v3/ChangeLog:

	* include/bits/node_handle.h (_Node_handle_common): Replace
	std::optional with custom type.
	* testsuite/20_util/variant/exception_safety.cc: Add missing
	header include.
2020-10-19 18:06:51 +01:00
François Dumont
4797a61cc5 libstdc++: Rename _Hashtable _H1, _H2 and _Hash template parameters
Limit our _Hashtable implementation to ranged hash. _H1 is now rename
to _Hash matching the _Hash functor used for unordered containers. _H2
is now renamed to _RangeHash. Former _Hash simply becomes _Unused. Remove
_ExtractKey storage.

libstdc++-v3/ChangeLog:

	* include/bits/hashtable_policy.h (_Hashtable<>): Rename _H1 into _Hash
	_H2 into _RangeHash and _Hash into _Unused.
	(_Hastable_base<>): Likewise.
	(_Map_base<>): Likewise.
	(_Insert_base<>): Likewise.
	(_Insert<>): Likewise.
	(_Rehash_base<>): Likewise.
	(_Local_iterator_base<>): Likewise.
	(_Hash_code_base<>): Likewise.
	(_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>):
	Remove.
	(_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, true>):
	Remove.
	(_Hash_code_base<_Key, _Value, _ExtractKey, _Hash, _RangeHas, _Unused,
	bool>): Remove _Hashtable_ebo_helper<2, _RangeHash> base type..
	(_Hash_code_base<>::_M_bucket_index(const _Key&, __hash_code, size_t)):
	Replace by...
	(_Hash_code_base<>::_M_bucket_index(__hash_code, size_t)): ...this.
	(_Local_iterator<>): Remove _H1 and _H2 template parameters.
	(_Local_const_iterator<>): Likewise.
	(_Equality<>): Likewise.
	(_Map_base<>::operator[](const key_type&): Adapt.
	(_Map_base<>::operator[](key_type&&): Adapt.
	(_Identity::operator()): Add noexcept.
	(_Select1st::operator()): Likewise.
	(_Hash_code_base<>): Remove _Hashtable_ebo_helper<0, _ExtractKey> base
	type.
	(_Hash_code_base::_M_extract): Remove.
	* include/bits/hashtable.h (_Hashtable<>): Remove _H1 and _H2 template
	parameters. Remove _ExtractKey from constructors.
	(_Hashtable<>::_M_insert_unique_node(const key_type&, size_t,
	__hash_code, __node_type*, size_t)): Replace by...
	(_Hashtable<>::_M_insert_unique_node(size_t, __hash_code,
	 __node_type*, size_t)): ...this.
	(_Hashtable<>::_M_insert_muti_node(__node_type*, const key_type&,
	__hash_code, __node_type*)): Replace by...
	(_Hashtable<>::_M_insert_multi_node(__node_type*, __hash_code,
	__node_type*)): ...this.
	(_Hashtable<>::__key_extract): Remove.
	* include/bits/node_handle.h: Adapt.
2020-08-26 07:58:46 +02:00
Jakub Jelinek
8d9254fc8a Update copyright years.
From-SVN: r279813
2020-01-01 12:51:42 +01:00
Jakub Jelinek
a554497024 Update copyright years.
From-SVN: r267494
2019-01-01 13:31:55 +01:00
Jonathan Wakely
3846b8e4b3 PR libstdc++/82966 fix swapping of node handles
PR libstdc++/82966
	* include/bits/node_handle.h (_Node_handle_common::_M_swap): Use value
	instead of type.
	* testsuite/23_containers/set/modifiers/node_swap.cc: New.

From-SVN: r260226
2018-05-14 15:27:54 +01:00
Jakub Jelinek
85ec4feb11 Update copyright years.
From-SVN: r256169
2018-01-03 11:03:58 +01:00
Jonathan Wakely
b7b61489b7 Fix -Wempty-body warnings for debug assertions
* include/bits/node_handle.h (_Node_handle_common::operator=)
	(_Node_handle_common::_M_swap): Add braces around debug assertions.

From-SVN: r255317
2017-12-01 15:10:20 +00:00
Jonathan Wakely
5f939178ec PR libstdc++/83226 avoid forming pointer-to-reference type
PR libstdc++/83226
	* include/bits/node_handle.h (_Node_handle::__pointer): Avoid forming
	pointer-to-reference types.
	* testsuite/23_containers/map/modifiers/insert/83226.cc: New test.

From-SVN: r255271
2017-11-30 13:45:37 +00:00
Jonathan Wakely
d69f1ec7d1 Add [[nodiscard]] attribute to C++17 components
* include/bits/fs_path.h (path::empty): Add nodiscard attribute.
	* include/bits/range_access.h (empty): Likewise.
	* include/std/string_view (basic_string_view::empty): Likewise.
	* testsuite/21_strings/basic_string_view/capacity/empty_neg.cc: New
	test.
	* testsuite/24_iterators/range_access_cpp17_neg.cc: New test.
	* testsuite/27_io/filesystem/path/query/empty_neg.cc: New test.

From-SVN: r255124
2017-11-23 22:11:21 +00:00
Jonathan Wakely
97695d99b0 Remove _Node_insert_return::get() member functions (P0508R0)
* include/bits/node_handle.h (_Node_insert_return::get): Remove, as
	per P0508R0.

From-SVN: r254368
2017-11-03 11:04:45 +00:00
Jonathan Wakely
6c6705a904 Simplify _Node_insert_return to avoid including <tuple>
* include/bits/node_handle.h (_Node_insert_return::get): Avoid
	use of std::tie and std::get.

From-SVN: r254162
2017-10-27 18:49:36 +01:00
Jonathan Wakely
85c05b5eec Fix order and types of members in C++17 insert_return_type structs
PR libstdc++/80761
	* include/bits/node_handle.h (_Node_insert_return): Reorder members.
	(tuple_size, tuple_element): Remove partial specializations.
	* include/bits/stl_tree.h (_Rb_tree::insert_return_type): Use
	const_iterator for std::set.
	* testsuite/23_containers/map/modifiers/extract.cc: New.
	* testsuite/23_containers/set/modifiers/extract.cc: New.
	* testsuite/23_containers/unordered_map/modifiers/extract.cc: New.
	* testsuite/23_containers/unordered_set/modifiers/extract.cc: New.

From-SVN: r248062
2017-05-15 14:47:40 +01:00
Jakub Jelinek
cbe34bb5ed Update copyright years.
From-SVN: r243994
2017-01-01 13:07:43 +01:00
Jonathan Wakely
d72d690a92 Remove invalid alias declaration from _Node_handle
* include/bits/node_handle.h (_Node_handle): Remove invalid and unused
	alias declaration.

From-SVN: r240779
2016-10-05 13:01:44 +01:00
Jonathan Wakely
2dbe56bdfb Implement C++17 node extraction and insertion (P0083R5)
* doc/xml/manual/status_cxx2017.xml: Document status.
	* doc/html/*: Regenerate.
	* include/Makefile.am: Add bits/node_handle.h and reorder.
	* include/Makefile.in: Regenerate.
	* include/bits/hashtable.h (_Hashtable::node_type)
	(_Hashtable::insert_return_type, _Hashtable::_M_reinsert_node)
	(_Hashtable::_M_reinsert_node_multi, _Hashtable::extract)
	(_Hashtable::_M_merge_unique, _Hashtable::_M_merge_multi): Define.
	(_Hash_merge_helper): Define primary template.
	* include/bits/node_handle.h: New header.
	* include/bits/stl_map.h (map): Declare _Rb_tree_merge_helper as
	friend.
	(map::node_type, map::insert_return_type, map::extract, map::merge)
	(map::insert(node_type&&), map::insert(const_iterator, node_type&&)):
	Define new members.
	(_Rb_tree_merge_helper): Specialize for map.
	* include/bits/stl_multimap.h (multimap): Declare _Rb_tree_merge_helper
	as friend.
	(multimap::node_type, multimap::extract, multimap::merge)
	(multimap::insert(node_type&&))
	(multimap::insert(const_iterator, node_type&&)): Define.
	(_Rb_tree_merge_helper): Specialize for multimap.
	* include/bits/stl_multiset.h (multiset): Declare _Rb_tree_merge_helper
	as friend.
	(multiset::node_type, multiset::extract, multiset::merge)
	(multiset::insert(node_type&&))
	(multiset::insert(const_iterator, node_type&&)): Define.
	* include/bits/stl_set.h (set): Declare _Rb_tree_merge_helper as
	friend.
	(set::node_type, set::insert_return_type, set::extract, set::merge)
	(set::insert(node_type&&), set::insert(const_iterator, node_type&&)):
	Define.
	(_Rb_tree_merge_helper): Specialize for set.
	* include/bits/stl_tree.h (_Rb_tree): Declare _Rb_tree<> as friend.
	(_Rb_tree::node_type, _Rb_tree::insert_return_type)
	(_Rb_tree::_M_reinsert_node_unique, _Rb_tree::_M_reinsert_node_equal)
	(_Rb_tree::_M_reinsert_node_hint_unique)
	(_Rb_tree::_M_reinsert_node_hint_equal, _Rb_tree::extract)
	(_Rb_tree::_M_merge_unique, _Rb_tree::_M_merge_equal): Define.
	(_Rb_tree_merge_helper): Specialize for multiset.
	* include/bits/unordered_map.h (unordered_map): Declare
	unordered_map<> and unordered_multimap<> as friends.
	(unordered_map::node_type, unordered_map::insert_return_type)
	(unordered_map::extract, unordered_map::merge)
	(unordered_map::insert(node_type&&))
	(unordered_map::insert(const_iterator, node_type&&))
	(unordered_multimap): Declare _Hash_merge_helper as friend.
	(unordered_multimap::node_type, unordered_multimap::extract)
	(unordered_multimap::merge, unordered_multimap::insert(node_type&&))
	(unordered_multimap::insert(const_iterator, node_type&&)): Define.
	(_Hash_merge_helper): Specialize for unordered maps and multimaps.
	* include/bits/unordered_set.h (unordered_set, unordered_multiset):
	Declare _Hash_merge_helper as friend.
	(unordered_set::node_type, unordered_set::insert_return_type)
	(unordered_set::extract, unordered_set::merge)
	(unordered_set::insert(node_type&&))
	(unordered_set::insert(const_iterator, node_type&&)): Define.
	(unordered_multiset::node_type, unordered_multiset::extract)
	(unordered_multiset::merge, unordered_multiset::insert(node_type&&))
	(unordered_multiset::insert(const_iterator, node_type&&)): Define.
	(_Hash_merge_helper): Specialize for unordered sets and multisets.
	* include/debug/map.h (map): Add using declarations or forwarding
	functions for new members.
	* include/debug/map.h (multimap): Likewise.
	* include/debug/map.h (multiset): Likewise.
	* include/debug/map.h (set): Likewise.
	* include/debug/unordered_map (unordered_map, unordered_multimap):
	Likewise.
	* include/debug/unordered_set( unordered_set, unordered_multiset):
	Likewise.
	* python/libstdcxx/v6/printers.py (get_value_from_aligned_membuf): New
	helper function.
	(get_value_from_list_node, get_value_from_Rb_tree_node): Use helper.
	(StdNodeHandlePrinter): Define printer for node handles.
	(build_libstdcxx_dictionary): Register StdNodeHandlePrinter.
	* testsuite/23_containers/map/modifiers/extract.cc: New.
	* testsuite/23_containers/map/modifiers/merge.cc: New.
	* testsuite/23_containers/multimap/modifiers/extract.cc: New.
	* testsuite/23_containers/multimap/modifiers/merge.cc: New.
	* testsuite/23_containers/multiset/modifiers/extract.cc: New.
	* testsuite/23_containers/multiset/modifiers/merge.cc: New.
	* testsuite/23_containers/set/modifiers/extract.cc: New.
	* testsuite/23_containers/set/modifiers/merge.cc: New.
	* testsuite/23_containers/unordered_map/modifiers/extract.cc: New.
	* testsuite/23_containers/unordered_map/modifiers/merge.cc: New.
	* testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
	New.
	* testsuite/23_containers/unordered_multimap/modifiers/merge.cc: New.
	* testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
	New.
	* testsuite/23_containers/unordered_multiset/modifiers/merge.cc: New.
	* testsuite/23_containers/unordered_set/modifiers/extract.cc: New.
	* testsuite/23_containers/unordered_set/modifiers/merge.cc: New.
	* testsuite/23_containers/unordered_set/instantiation_neg.cc: Adjust
	dg-error lineno.
	* testsuite/libstdc++-prettyprinters/cxx17.cc: Test node handles.

From-SVN: r240363
2016-09-22 14:58:49 +01:00