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* move(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    assert(std::char_traits<char32_t>::move(s1, s1+1, 2) == s1);
24    assert(s1[0] == char32_t(2));
25    assert(s1[1] == char32_t(3));
26    assert(s1[2] == char32_t(3));
27    s1[2] = char32_t(0);
28    assert(std::char_traits<char32_t>::move(s1+1, s1, 2) == s1+1);
29    assert(s1[0] == char32_t(2));
30    assert(s1[1] == char32_t(2));
31    assert(s1[2] == char32_t(3));
32#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
33}
34