45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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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++98, c++03, c++11, c++14, c++17
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// <string>
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// template<> struct char_traits<char8_t>
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// static char_type* assign(char_type* s, size_t n, char_type a);
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#include <string>
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#include <cassert>
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#include "test_macros.h"
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TEST_CONSTEXPR_CXX20 bool test()
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{
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#if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
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char8_t s2[3] = {0};
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assert(std::char_traits<char8_t>::assign(s2, 3, char8_t(5)) == s2);
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assert(s2[0] == char8_t(5));
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assert(s2[1] == char8_t(5));
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assert(s2[2] == char8_t(5));
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assert(std::char_traits<char8_t>::assign(NULL, 0, char8_t(5)) == NULL);
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#endif
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return true;
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}
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int main(int, char**)
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{
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test();
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#if TEST_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_BUILTIN_IS_CONSTANT_EVALUATED)
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static_assert(test());
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#endif
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return 0;
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}
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