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Vendor import of libc++ trunk r351319 (just before the release_80
[FreeBSD/FreeBSD.git] / test / std / strings / string.classes / typedefs.pass.cpp
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 // Test for the existence of:
13
14 // basic_string typedef names
15 // typedef basic_string<char>     string;
16 // typedef basic_string<char16_t> u16string;
17 // typedef basic_string<char8_t>  u8string;  // C++20
18 // typedef basic_string<char32_t> u32string;
19 // typedef basic_string<wchar_t>  wstring;
20
21 #include <string>
22 #include <type_traits>
23
24 #include "test_macros.h"
25
26 int main()
27 {
28     static_assert((std::is_same<std::string, std::basic_string<char> >::value), "");
29     static_assert((std::is_same<std::wstring, std::basic_string<wchar_t> >::value), "");
30 #if defined(__cpp_lib_char8_t) && __cpp_lib_char8_t >= 201811L
31     static_assert((std::is_same<std::u8string, std::basic_string<char8_t> >::value), "");
32 #endif
33 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
34     static_assert((std::is_same<std::u16string, std::basic_string<char16_t> >::value), "");
35     static_assert((std::is_same<std::u32string, std::basic_string<char32_t> >::value), "");
36 #endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
37 }