42 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<char32_t>12 13// static void assign(char_type& c1, const char_type& c2);14// 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 char32_t c = U'1';24 std::char_traits<char32_t>::assign(c, U'a');25 return c == U'a';26}27#endif28 29int main(int, char**) {30#if TEST_STD_VER >= 1131 char32_t c = U'\0';32 std::char_traits<char32_t>::assign(c, U'a');33 assert(c == U'a');34#endif35 36#if TEST_STD_VER > 1437 static_assert(test_constexpr(), "");38#endif39 40 return 0;41}42