gcc/libstdc++-v3/include/std/version
Jonathan Wakely f903c13ce8 libstdc++: Fix macro redefinition warnings
Including <version> after <iterator> gives a warning about redefining
the __cpp_lib_array_constexpr macro. What happens is that <iterator>
sets the C++20 value, then <version> redefines it to the C++17 value,
then undefines it and defines it again to the C++20 value.

This change avoids defining it to the C++17 value when compiling C++20
or later (which also means we no longer need the #undef).

A similar warning happens for __cpp_lib_constexpr_char_traits when
including <version> after any header that includes <bits/char_traits.h>.

libstdc++-v3/ChangeLog:

	* include/std/version (__cpp_lib_array_constexpr):
	(__cpp_lib_constexpr_char_traits): Only define C++17 value when
	compiling C++17.
2020-09-10 18:51:24 +01:00

238 lines
7.7 KiB
C++

// -*- C++ -*- Libstdc++ version details header.
// Copyright (C) 2018-2020 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file version
* This is a Standard C++ Library file. You should @c \#include this file
* in your programs, rather than any of the @a *.h implementation files.
*/
#ifndef _GLIBCXX_VERSION_INCLUDED
#define _GLIBCXX_VERSION_INCLUDED
#pragma GCC system_header
#include <bits/c++config.h>
// c++03
#if _GLIBCXX_HOSTED
# define __cpp_lib_incomplete_container_elements 201505
#endif
#if !defined(__STRICT_ANSI__)
// gnu++03
# define __cpp_lib_uncaught_exceptions 201411L
#endif
#if __cplusplus >= 201103L
// c++11
#define __cpp_lib_is_null_pointer 201309
#define __cpp_lib_result_of_sfinae 201210
#if _GLIBCXX_HOSTED
# define __cpp_lib_allocator_traits_is_always_equal 201411
# define __cpp_lib_shared_ptr_arrays 201611L
#endif
#if !defined(__STRICT_ANSI__)
// gnu++11
# define __cpp_lib_is_swappable 201603
# define __cpp_lib_void_t 201411
# if _GLIBCXX_HOSTED
# define __cpp_lib_enable_shared_from_this 201603
# endif
#endif
// For C++11 and later we support ISO/IEC 29124 Mathematical Special Functions
#define __STDCPP_MATH_SPEC_FUNCS__ 201003L
#if __cplusplus >= 201402L
// c++14
#if __cpp_impl_coroutine
# define __cpp_lib_coroutine 201902L
#endif
#define __cpp_lib_integral_constant_callable 201304
#define __cpp_lib_is_final 201402L
#define __cpp_lib_transformation_trait_aliases 201304
#if _GLIBCXX_HOSTED
# define __cpp_lib_chrono_udls 201304
# define __cpp_lib_complex_udls 201309
# define __cpp_lib_exchange_function 201304
# define __cpp_lib_generic_associative_lookup 201304
# define __cpp_lib_integer_sequence 201304
# define __cpp_lib_make_reverse_iterator 201402
# define __cpp_lib_make_unique 201304
# ifndef _GLIBCXX_DEBUG // PR libstdc++/70303
# define __cpp_lib_null_iterators 201304L
# endif
# define __cpp_lib_quoted_string_io 201304
# define __cpp_lib_robust_nonmodifying_seq_ops 201304
# ifdef _GLIBCXX_HAS_GTHREADS
# define __cpp_lib_shared_timed_mutex 201402
# endif
# define __cpp_lib_string_udls 201304
# define __cpp_lib_transparent_operators 201510
# define __cpp_lib_tuple_element_t 201402L
# define __cpp_lib_tuples_by_type 201304
#endif
#if __cplusplus >= 201703L
// c++17
#define __cpp_lib_addressof_constexpr 201603
#define __cpp_lib_atomic_is_always_lock_free 201603
#define __cpp_lib_bool_constant 201505
#define __cpp_lib_byte 201603
#ifdef _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP
# define __cpp_lib_has_unique_object_representations 201606
#endif
#ifdef _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE
# define __cpp_lib_is_aggregate 201703
#endif
#define __cpp_lib_is_invocable 201703
#define __cpp_lib_is_swappable 201603
#ifdef _GLIBCXX_HAVE_BUILTIN_LAUNDER
# define __cpp_lib_launder 201606
#endif
#define __cpp_lib_logical_traits 201510
#define __cpp_lib_type_trait_variable_templates 201510L
#define __cpp_lib_uncaught_exceptions 201411L
#define __cpp_lib_void_t 201411
#if _GLIBCXX_HOSTED
#define __cpp_lib_any 201606L
#define __cpp_lib_apply 201603
#if __cplusplus == 201703L // N.B. updated value in C++20
# define __cpp_lib_array_constexpr 201803L
#endif
#define __cpp_lib_as_const 201510
#define __cpp_lib_boyer_moore_searcher 201603
#define __cpp_lib_chrono 201611
#define __cpp_lib_clamp 201603
#if __cplusplus == 201703L // N.B. updated value in C++20
# define __cpp_lib_constexpr_char_traits 201611L
#endif
#define __cpp_lib_enable_shared_from_this 201603
#define __cpp_lib_execution 201902L // FIXME: should be 201603L
#define __cpp_lib_filesystem 201703
#define __cpp_lib_gcd 201606
#define __cpp_lib_gcd_lcm 201606
#define __cpp_lib_hypot 201603
#define __cpp_lib_invoke 201411L
#define __cpp_lib_lcm 201606
#define __cpp_lib_make_from_tuple 201606
#define __cpp_lib_map_try_emplace 201411
#define __cpp_lib_math_special_functions 201603L
#ifdef _GLIBCXX_HAS_GTHREADS
# define __cpp_lib_memory_resource 201603
#else
# define __cpp_lib_memory_resource 1
#endif
#define __cpp_lib_node_extract 201606
#define __cpp_lib_nonmember_container_access 201411
#define __cpp_lib_not_fn 201603
#define __cpp_lib_optional 201606L
#define __cpp_lib_parallel_algorithm 201603L
#define __cpp_lib_raw_memory_algorithms 201606L
#define __cpp_lib_sample 201603
#ifdef _GLIBCXX_HAS_GTHREADS
# define __cpp_lib_scoped_lock 201703
# define __cpp_lib_shared_mutex 201505
#endif
#define __cpp_lib_shared_ptr_weak_type 201606
#define __cpp_lib_string_view 201803L
// #define __cpp_lib_to_chars 201611L
#define __cpp_lib_unordered_map_try_emplace 201411
#define __cpp_lib_variant 201606L
#endif
#if __cplusplus > 201703L
// c++2a
#define __cpp_lib_atomic_flag_test 201907L
#define __cpp_lib_atomic_float 201711L
#define __cpp_lib_atomic_ref 201806L
#define __cpp_lib_atomic_value_initialization 201911L
#define __cpp_lib_bitops 201907L
#define __cpp_lib_bounded_array_traits 201902L
// __cpp_lib_char8_t is defined in <bits/c++config.h>
#if __cpp_concepts >= 201907L
# define __cpp_lib_concepts 202002L
#endif
#if __cpp_impl_destroying_delete
# define __cpp_lib_destroying_delete 201806L
#endif
#define __cpp_lib_endian 201907L
#define __cpp_lib_int_pow2 202002L
#ifdef _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED
# define __cpp_lib_is_constant_evaluated 201811L
#endif
#define __cpp_lib_is_nothrow_convertible 201806L
#define __cpp_lib_remove_cvref 201711L
#if __cpp_impl_three_way_comparison >= 201907L && __cpp_lib_concepts
# define __cpp_lib_three_way_comparison 201907L
#endif
#define __cpp_lib_type_identity 201806L
#define __cpp_lib_unwrap_ref 201811L
#if _GLIBCXX_HOSTED
#define __cpp_lib_array_constexpr 201811L
#define __cpp_lib_assume_aligned 201811L
#define __cpp_lib_bind_front 201907L
// FIXME: #define __cpp_lib_execution 201902L
#define __cpp_lib_integer_comparison_functions 202002L
#define __cpp_lib_constexpr_algorithms 201806L
#define __cpp_lib_constexpr_char_traits 201811L
#define __cpp_lib_constexpr_complex 201711L
#define __cpp_lib_constexpr_dynamic_alloc 201907L
#define __cpp_lib_constexpr_functional 201907L
#define __cpp_lib_constexpr_iterator 201811L
#define __cpp_lib_constexpr_memory 201811L
#define __cpp_lib_constexpr_numeric 201911L
#define __cpp_lib_constexpr_string_view 201811L
#define __cpp_lib_constexpr_tuple 201811L
#define __cpp_lib_constexpr_utility 201811L
#define __cpp_lib_erase_if 202002L
#define __cpp_lib_interpolate 201902L
#ifdef _GLIBCXX_HAS_GTHREADS
# define __cpp_lib_jthread 201911L
#endif
#define __cpp_lib_list_remove_return_type 201806L
#define __cpp_lib_math_constants 201907L
#define __cpp_lib_polymorphic_allocator 201902L
#if __cpp_lib_concepts
# define __cpp_lib_ranges 201911L
#endif
#define __cpp_lib_shift 201806L
#define __cpp_lib_span 202002L
#define __cpp_lib_ssize 201902L
#define __cpp_lib_starts_ends_with 201711L
#define __cpp_lib_to_address 201711L
#define __cpp_lib_to_array 201907L
#endif
#endif // C++2a
#endif // C++17
#endif // C++14
#endif // C++11
#endif // _GLIBCXX_VERSION_INCLUDED