| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 |
| |
| // <string> |
| |
| // template<> struct char_traits<char8_t> |
| |
| // static char_type* move(char_type* s1, const char_type* s2, size_t n); |
| |
| #include <string> |
| #include <cassert> |
| |
| int main(int, char**) |
| { |
| #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L |
| char8_t s1[] = {1, 2, 3}; |
| assert(std::char_traits<char8_t>::move(s1, s1+1, 2) == s1); |
| assert(s1[0] == char8_t(2)); |
| assert(s1[1] == char8_t(3)); |
| assert(s1[2] == char8_t(3)); |
| s1[2] = char8_t(0); |
| assert(std::char_traits<char8_t>::move(s1+1, s1, 2) == s1+1); |
| assert(s1[0] == char8_t(2)); |
| assert(s1[1] == char8_t(2)); |
| assert(s1[2] == char8_t(3)); |
| assert(std::char_traits<char8_t>::move(NULL, s1, 0) == NULL); |
| assert(std::char_traits<char8_t>::move(s1, NULL, 0) == s1); |
| #endif |
| |
| return 0; |
| } |