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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <string>
// template<> struct char_traits<char32_t>
// static void assign(char_type& c1, const char_type& c2);
// constexpr in C++17
#include <string>
#include <cassert>
#include "test_macros.h"
#if TEST_STD_VER > 14
constexpr bool test_constexpr()
{
char32_t c = U'1';
std::char_traits<char32_t>::assign(c, U'a');
return c == U'a';
}
#endif
int main()
{
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
#if TEST_STD_VER >= 11
char32_t c = U'\0';
std::char_traits<char32_t>::assign(c, U'a');
assert(c == U'a');
#endif
#if TEST_STD_VER > 14
static_assert(test_constexpr(), "" );
#endif
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
}
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