C++程序  |  26行  |  669 B

//===----------------------------------------------------------------------===//
//
//                     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<char16_t>

// static constexpr int_type eof();

#include <string>
#include <cassert>

int main()
{
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
    std::char_traits<char16_t>::int_type i = std::char_traits<char16_t>::eof();
    ((void)i); // Prevent unused warning
#endif
}