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 10 // <string> 11 12 // template<> struct char_traits<char16_t> 13 14 // static constexpr bool lt(char_type c1, char_type c2); 15 16 #include <string> 17 #include <cassert> 18 19 int main() 20 { 21 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS 22 char16_t c = u'\0'; 23 assert(!std::char_traits<char16_t>::lt(u'a', u'a')); 24 assert( std::char_traits<char16_t>::lt(u'A', u'a')); 25 #endif // _LIBCPP_HAS_NO_UNICODE_CHARS 26 } 27