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<wchar_t>12 13// static char_type* assign(char_type* s, size_t n, char_type a);14 15// UNSUPPORTED: no-wide-characters16 17#include <string>18#include <cassert>19 20#include "test_macros.h"21 22TEST_CONSTEXPR_CXX20 bool test() {23 wchar_t s2[3] = {0};24 assert(std::char_traits<wchar_t>::assign(s2, 3, wchar_t(5)) == s2);25 assert(s2[0] == wchar_t(5));26 assert(s2[1] == wchar_t(5));27 assert(s2[2] == wchar_t(5));28 assert(std::char_traits<wchar_t>::assign(NULL, 0, wchar_t(5)) == NULL);29 30 return true;31}32 33int main(int, char**) {34 test();35 36#if TEST_STD_VER > 1737 static_assert(test());38#endif39 40 return 0;41}42