File: assign2.pass.cpp

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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<char>

// static constexpr void assign(char_type& c1, const char_type& c2); // constexpr in C++17
// constexpr in C++17

#include <string>
#include <cassert>

#include "test_macros.h"

#if TEST_STD_VER > 14
constexpr bool test_constexpr()
{
    char c = '1';
    std::char_traits<char>::assign(c, 'a');
    return c == 'a';
}
#endif

int main(int, char**)
{
    char c = '\0';
    std::char_traits<char>::assign(c, 'a');
    assert(c == 'a');

#if TEST_STD_VER > 14
    static_assert(test_constexpr(), "" );
#endif

  return 0;
}