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<char32_t>
13
14// static char_type* copy(char_type* s1, const char_type* s2, size_t n);
15
16#include <string>
17#include <cassert>
18
19int main()
20{
21#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
22    char32_t s1[] = {1, 2, 3};
23    char32_t s2[3] = {0};
24    assert(std::char_traits<char32_t>::copy(s2, s1, 3) == s2);
25    assert(s2[0] == char32_t(1));
26    assert(s2[1] == char32_t(2));
27    assert(s2[2] == char32_t(3));
28    assert(std::char_traits<char32_t>::copy(NULL, s1, 0) == NULL);
29    assert(std::char_traits<char32_t>::copy(s1, NULL, 0) == s1);
30#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
31}
32