40 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <string>10 11// template<> struct char_traits<char>12 13// static constexpr void assign(char_type& c1, const char_type& c2); // constexpr in C++1714// constexpr in C++1715 16#include <string>17#include <cassert>18 19#include "test_macros.h"20 21#if TEST_STD_VER > 1422constexpr bool test_constexpr() {23 char c = '1';24 std::char_traits<char>::assign(c, 'a');25 return c == 'a';26}27#endif28 29int main(int, char**) {30 char c = '\0';31 std::char_traits<char>::assign(c, 'a');32 assert(c == 'a');33 34#if TEST_STD_VER > 1435 static_assert(test_constexpr(), "");36#endif37 38 return 0;39}40