forked from OSchip/llvm-project
[libc++] Implement P1423R3 (char8_t backward compatibility remediation)
Reviewed By: Mordante, #libc Spies: h-vetinari, libcxx-commits, arichardson Differential Revision: https://reviews.llvm.org/D129195
This commit is contained in:
Nikolas Klauser
parent
20d30f709b
commit
309aed3068
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@ -196,7 +196,7 @@ Status
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------------------------------------------------- -----------------
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``__cpp_lib_bounded_array_traits`` ``201902L``
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------------------------------------------------- -----------------
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``__cpp_lib_char8_t`` ``201811L``
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``__cpp_lib_char8_t`` ``201907L``
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------------------------------------------------- -----------------
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``__cpp_lib_concepts`` ``202002L``
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------------------------------------------------- -----------------
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@ -49,6 +49,7 @@ Implemented Papers
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- P0618R0 (Deprecating <codecvt>)
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- P2418R2 (Add support for ``std::generator``-like types to ``std::format``)
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- LWG3659 (Consider ``ATOMIC_FLAG_INIT`` undeprecation)
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- P1423R3 (char8_t backward compatibility remediation)
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- Marked the following papers as "Complete" (note that some of those might have
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been implemented in a previous release but not marked as such):
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@ -115,7 +115,7 @@
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"`P1208R6 <https://wg21.link/P1208R6>`__","LWG","Adopt source_location for C++20","Cologne","",""
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"`P1355R2 <https://wg21.link/P1355R2>`__","LWG","Exposing a narrow contract for ceil2","Cologne","|Complete|","9.0"
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"`P1361R2 <https://wg21.link/P1361R2>`__","LWG","Integration of chrono with text formatting","Cologne","",""
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"`P1423R3 <https://wg21.link/P1423R3>`__","LWG","char8_t backward compatibility remediation","Cologne","|In Progress|",""
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"`P1423R3 <https://wg21.link/P1423R3>`__","LWG","char8_t backward compatibility remediation","Cologne","|Complete|","15.0"
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"`P1424R1 <https://wg21.link/P1424R1>`__","LWG","'constexpr' feature macro concerns","Cologne","Superseded by `P1902 <https://wg21.link/P1902>`__",""
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"`P1466R3 <https://wg21.link/P1466R3>`__","LWG","Miscellaneous minor fixes for chrono","Cologne","",""
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"`P1474R1 <https://wg21.link/P1474R1>`__","LWG","Helpful pointers for ContiguousIterator","Cologne","|Complete|","15.0"
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@ -130,6 +130,35 @@ template <class charT, class traits>
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template <class Stream, class T>
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Stream&& operator<<(Stream&& os, const T& x);
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, wchar_t) = delete; // since C++20
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, char8_t) = delete; // since C++20
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, char16_t) = delete; // since C++20
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, char32_t) = delete; // since C++20
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template<class traits>
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basic_ostream<wchar_t, traits>& operator<<(basic_ostream<wchar_t, traits>&, char8_t) = delete; // since C++20
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template<class traits>
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basic_ostream<wchar_t, traits>& operator<<(basic_ostream<wchar_t, traits>&, char16_t) = delete; // since C++20
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template<class traits>
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basic_ostream<wchar_t, traits>& operator<<(basic_ostream<wchar_t, traits>&, char32_t) = delete; // since C++20
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, const wchar_t*) = delete; // since C++20
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, const char8_t*) = delete; // since C++20
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, const char16_t*) = delete; // since C++20
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template<class traits>
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basic_ostream<char, traits>& operator<<(basic_ostream<char, traits>&, const char32_t*) = delete; // since C++20
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template<class traits>
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basic_ostream<wchar_t, traits>& operator<<(basic_ostream<wchar_t, traits>&, const char8_t*) = delete; // since C++20
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template<class traits>
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basic_ostream<wchar_t, traits>& operator<<(basic_ostream<wchar_t, traits>&, const char16_t*) = delete; // since C++20
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template<class traits>
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basic_ostream<wchar_t, traits>& operator<<(basic_ostream<wchar_t, traits>&, const char32_t*) = delete; // since C++20
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} // std
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*/
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@ -1102,6 +1131,57 @@ operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x)
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use_facet<ctype<_CharT> >(__os.getloc()).widen('1'));
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}
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#if _LIBCPP_STD_VER > 17
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#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, wchar_t) = delete;
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, const wchar_t*) = delete;
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template <class _Traits>
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basic_ostream<wchar_t, _Traits>& operator<<(basic_ostream<wchar_t, _Traits>&, char16_t) = delete;
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template <class _Traits>
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basic_ostream<wchar_t, _Traits>& operator<<(basic_ostream<wchar_t, _Traits>&, char32_t) = delete;
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template <class _Traits>
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basic_ostream<wchar_t, _Traits>& operator<<(basic_ostream<wchar_t, _Traits>&, const char16_t*) = delete;
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template <class _Traits>
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basic_ostream<wchar_t, _Traits>& operator<<(basic_ostream<wchar_t, _Traits>&, const char32_t*) = delete;
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#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
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#ifndef _LIBCPP_HAS_NO_CHAR8_T
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, char8_t) = delete;
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template <class _Traits>
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basic_ostream<wchar_t, _Traits>& operator<<(basic_ostream<wchar_t, _Traits>&, char8_t) = delete;
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, const char8_t*) = delete;
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template <class _Traits>
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basic_ostream<wchar_t, _Traits>& operator<<(basic_ostream<wchar_t, _Traits>&, const char8_t*) = delete;
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#endif
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, char16_t) = delete;
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, char32_t) = delete;
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, const char16_t*) = delete;
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template <class _Traits>
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basic_ostream<char, _Traits>& operator<<(basic_ostream<char, _Traits>&, const char32_t*) = delete;
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#endif // _LIBCPP_STD_VER > 17
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extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostream<char>;
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#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
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extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ostream<wchar_t>;
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@ -47,7 +47,7 @@ __cpp_lib_bounded_array_traits 201902L <type_traits>
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__cpp_lib_boyer_moore_searcher 201603L <functional>
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__cpp_lib_byte 201603L <cstddef>
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__cpp_lib_byteswap 202110L <bit>
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__cpp_lib_char8_t 201811L <atomic> <filesystem> <istream>
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__cpp_lib_char8_t 201907L <atomic> <filesystem> <istream>
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<limits> <locale> <ostream>
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<string> <string_view>
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__cpp_lib_chrono 201611L <chrono>
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@ -308,7 +308,7 @@ __cpp_lib_void_t 201411L <type_traits>
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// # define __cpp_lib_bitops 201907L
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# define __cpp_lib_bounded_array_traits 201902L
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# if !defined(_LIBCPP_HAS_NO_CHAR8_T)
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# define __cpp_lib_char8_t 201811L
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# define __cpp_lib_char8_t 201907L
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# endif
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# define __cpp_lib_concepts 202002L
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# define __cpp_lib_constexpr_algorithms 201806L
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@ -0,0 +1,55 @@
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// <ostream>
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#include <ostream>
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#include <sstream>
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#include <utility>
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#include "test_macros.h"
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int main() {
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std::ostringstream s;
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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s << wchar_t(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<wchar_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<const wchar_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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std::wostringstream sw;
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# ifndef TEST_HAS_NO_CHAR8_T
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sw << char8_t(); // expected-error {{overload resolution selected deleted operator '<<'}}
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sw << std::declval<char8_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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sw << std::declval<const char8_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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# endif
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sw << char16_t(); // expected-error {{overload resolution selected deleted operator '<<'}}
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sw << std::declval<char16_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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sw << std::declval<const char16_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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sw << char32_t(); // expected-error {{overload resolution selected deleted operator '<<'}}
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sw << std::declval<char32_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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sw << std::declval<const char32_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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#endif // TEST_HAS_NO_WIDE_CHARACTERS
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#ifndef TEST_HAS_NO_CHAR8_T
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s << char8_t(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<char8_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<const char8_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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#endif
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s << char16_t(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<char16_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<const char16_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << char32_t(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<char32_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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s << std::declval<const char32_t*>(); // expected-error {{overload resolution selected deleted operator '<<'}}
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}
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@ -24,7 +24,7 @@
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__cpp_lib_atomic_shared_ptr 201711L [C++20]
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__cpp_lib_atomic_value_initialization 201911L [C++20]
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__cpp_lib_atomic_wait 201907L [C++20]
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__cpp_lib_char8_t 201811L [C++20]
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__cpp_lib_char8_t 201907L [C++20]
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*/
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#include <atomic>
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@ -233,8 +233,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++20"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++20"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++20"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -328,8 +328,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++2b"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -18,7 +18,7 @@
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// Test the feature test macros defined by <filesystem>
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/* Constant Value
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__cpp_lib_char8_t 201811L [C++20]
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__cpp_lib_char8_t 201907L [C++20]
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__cpp_lib_filesystem 201703L [C++17]
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*/
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@ -70,8 +70,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++20"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++20"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++20"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -98,8 +98,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++2b"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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// Test the feature test macros defined by <istream>
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/* Constant Value
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__cpp_lib_char8_t 201811L [C++20]
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__cpp_lib_char8_t 201907L [C++20]
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*/
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#include <istream>
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@ -48,8 +48,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++20"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++20"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++20"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -63,8 +63,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++2b"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -16,7 +16,7 @@
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// Test the feature test macros defined by <limits>
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/* Constant Value
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__cpp_lib_char8_t 201811L [C++20]
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__cpp_lib_char8_t 201907L [C++20]
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*/
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#include <limits>
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@ -46,8 +46,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++20"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++20"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++20"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -61,8 +61,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++2b"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -18,7 +18,7 @@
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// Test the feature test macros defined by <locale>
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/* Constant Value
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__cpp_lib_char8_t 201811L [C++20]
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__cpp_lib_char8_t 201907L [C++20]
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*/
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#include <locale>
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@ -48,8 +48,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++20"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++20"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++20"
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# endif
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# else
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# ifdef __cpp_lib_char8_t
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@ -63,8 +63,8 @@
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# ifndef __cpp_lib_char8_t
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# error "__cpp_lib_char8_t should be defined in c++2b"
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# endif
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# if __cpp_lib_char8_t != 201811L
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# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
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# if __cpp_lib_char8_t != 201907L
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# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
|
|||
|
|
@ -18,7 +18,7 @@
|
|||
// Test the feature test macros defined by <ostream>
|
||||
|
||||
/* Constant Value
|
||||
__cpp_lib_char8_t 201811L [C++20]
|
||||
__cpp_lib_char8_t 201907L [C++20]
|
||||
*/
|
||||
|
||||
#include <ostream>
|
||||
|
|
@ -48,8 +48,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++20"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++20"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++20"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
@ -63,8 +63,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++2b"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
|
|||
|
|
@ -17,7 +17,7 @@
|
|||
|
||||
/* Constant Value
|
||||
__cpp_lib_allocator_traits_is_always_equal 201411L [C++17]
|
||||
__cpp_lib_char8_t 201811L [C++20]
|
||||
__cpp_lib_char8_t 201907L [C++20]
|
||||
__cpp_lib_constexpr_string 201907L [C++20]
|
||||
__cpp_lib_erase_if 202002L [C++20]
|
||||
__cpp_lib_nonmember_container_access 201411L [C++17]
|
||||
|
|
@ -199,8 +199,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++20"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++20"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++20"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
@ -275,8 +275,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++2b"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
|
|||
|
|
@ -16,7 +16,7 @@
|
|||
// Test the feature test macros defined by <string_view>
|
||||
|
||||
/* Constant Value
|
||||
__cpp_lib_char8_t 201811L [C++20]
|
||||
__cpp_lib_char8_t 201907L [C++20]
|
||||
__cpp_lib_constexpr_string_view 201811L [C++20]
|
||||
__cpp_lib_starts_ends_with 201711L [C++20]
|
||||
__cpp_lib_string_contains 202011L [C++2b]
|
||||
|
|
@ -102,8 +102,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++20"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++20"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++20"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
@ -142,8 +142,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++2b"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
|
|||
|
|
@ -45,7 +45,7 @@
|
|||
__cpp_lib_boyer_moore_searcher 201603L [C++17]
|
||||
__cpp_lib_byte 201603L [C++17]
|
||||
__cpp_lib_byteswap 202110L [C++2b]
|
||||
__cpp_lib_char8_t 201811L [C++20]
|
||||
__cpp_lib_char8_t 201907L [C++20]
|
||||
__cpp_lib_chrono 201611L [C++17]
|
||||
__cpp_lib_chrono_udls 201304L [C++14]
|
||||
__cpp_lib_clamp 201603L [C++17]
|
||||
|
|
@ -2595,8 +2595,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++20"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++20"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++20"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
@ -3814,8 +3814,8 @@
|
|||
# ifndef __cpp_lib_char8_t
|
||||
# error "__cpp_lib_char8_t should be defined in c++2b"
|
||||
# endif
|
||||
# if __cpp_lib_char8_t != 201811L
|
||||
# error "__cpp_lib_char8_t should have the value 201811L in c++2b"
|
||||
# if __cpp_lib_char8_t != 201907L
|
||||
# error "__cpp_lib_char8_t should have the value 201907L in c++2b"
|
||||
# endif
|
||||
# else
|
||||
# ifdef __cpp_lib_char8_t
|
||||
|
|
|
|||
|
|
@ -186,7 +186,7 @@ feature_test_macros = [ add_version_header(x) for x in [
|
|||
"headers": ["bit"],
|
||||
}, {
|
||||
"name": "__cpp_lib_char8_t",
|
||||
"values": { "c++20": 201811 },
|
||||
"values": { "c++20": 201907 },
|
||||
"headers": ["atomic", "filesystem", "istream", "limits", "locale", "ostream", "string", "string_view"],
|
||||
"test_suite_guard": "defined(__cpp_char8_t)",
|
||||
"libcxx_guard": "!defined(_LIBCPP_HAS_NO_CHAR8_T)",
|
||||
|
|
|
|||
Loading…
Reference in New Issue