copy.pass.cpp (1006B)
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 char_type* copy(char_type* s1, const char_type* s2, size_t n); 16 17 #include <string> 18 #include <cassert> 19 20 int main() 21 { 22 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L 23 char8_t s1[] = {1, 2, 3}; 24 char8_t s2[3] = {0}; 25 assert(std::char_traits<char8_t>::copy(s2, s1, 3) == s2); 26 assert(s2[0] == char8_t(1)); 27 assert(s2[1] == char8_t(2)); 28 assert(s2[2] == char8_t(3)); 29 assert(std::char_traits<char8_t>::copy(NULL, s1, 0) == NULL); 30 assert(std::char_traits<char8_t>::copy(s1, NULL, 0) == s1); 31 #endif 32 }