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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <string>
// template<> struct char_traits<wchar_t>
// static void assign(char_type& c1, const char_type& c2);
// constexpr in C++17
// UNSUPPORTED: no-wide-characters
#include <string>
#include <cassert>
#include "test_macros.h"
#if TEST_STD_VER > 14
constexpr bool test_constexpr() {
wchar_t c = L'1';
std::char_traits<wchar_t>::assign(c, L'a');
return c == L'a';
}
#endif
int main(int, char**) {
wchar_t c = L'\0';
std::char_traits<wchar_t>::assign(c, L'a');
assert(c == L'a');
#if TEST_STD_VER > 14
static_assert(test_constexpr(), "");
#endif
return 0;
}
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