1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: !stdlib=libc++ && (c++03 || c++11 || c++14)
10
11 // <string_view>
12
13 // constexpr basic_string_view& operator=(const basic_string_view &) noexcept = default;
14
15 #include <string_view>
16 #include <cassert>
17
18 #include "test_macros.h"
19
20 template <typename T>
21 #if TEST_STD_VER > 11
22 constexpr
23 #endif
24 bool
test(T sv0)25 test(T sv0) {
26 T sv1;
27 sv1 = sv0;
28 // We can't just say "sv0 == sv1" here because string_view::compare
29 // isn't constexpr until C++17, and we want to support back to C++14
30 return sv0.size() == sv1.size() && sv0.data() == sv1.data();
31 }
32
main(int,char **)33 int main(int, char**) {
34 assert(test<std::string_view>("1234"));
35 #ifndef TEST_HAS_NO_CHAR8_T
36 assert(test<std::u8string_view>(u8"1234"));
37 #endif
38 #if TEST_STD_VER >= 11
39 assert(test<std::u16string_view>(u"1234"));
40 assert(test<std::u32string_view>(U"1234"));
41 #endif
42 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
43 assert(test<std::wstring_view>(L"1234"));
44 #endif
45
46 #if TEST_STD_VER > 11
47 static_assert(test<std::string_view>({"abc", 3}), "");
48 # ifndef TEST_HAS_NO_CHAR8_T
49 static_assert(test<std::u8string_view>({u8"abc", 3}), "");
50 # endif
51 static_assert(test<std::u16string_view>({u"abc", 3}), "");
52 static_assert(test<std::u32string_view>({U"abc", 3}), "");
53 # ifndef TEST_HAS_NO_WIDE_CHARACTERS
54 static_assert(test<std::wstring_view>({L"abc", 3}), "");
55 # endif
56 #endif
57
58 return 0;
59 }
60