1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 10 11 // <string> 12 13 // template<> struct char_traits<char8_t> 14 15 // static constexpr bool lt(char_type c1, char_type c2); 16 17 #include <string> 18 #include <cassert> 19 20 #include "test_macros.h" 21 22 int main() 23 { 24 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L 25 assert(!std::char_traits<char8_t>::lt(u8'a', u8'a')); 26 assert( std::char_traits<char8_t>::lt(u8'A', u8'a')); 27 #endif 28 } 29
