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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // UNSUPPORTED: c++03, c++11, c++14, c++17 9 10 // <string> 11 12 // template<> struct char_traits<char8_t> 13 14 // static constexpr bool lt(char_type c1, char_type c2); 15 16 #include <string> 17 #include <cassert> 18 19 #include "test_macros.h" 20 main(int,char **)21int main(int, char**) 22 { 23 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L 24 assert(!std::char_traits<char8_t>::lt(u8'a', u8'a')); 25 assert( std::char_traits<char8_t>::lt(u8'A', u8'a')); 26 #endif 27 28 return 0; 29 } 30