1 //===----------------------------------------------------------------------===//
2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
3 // See https://llvm.org/LICENSE.txt for license information.
4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
5 //
6 //===----------------------------------------------------------------------===//
7 
8 // UNSUPPORTED: c++03, c++11, c++14, c++17
9 
10 // <format>
11 
12 // constexpr end() const noexcept;
13 
14 #include <format>
15 
16 #include <cassert>
17 #include <string_view>
18 
19 #include "test_macros.h"
20 
21 template <class CharT>
test(const CharT * fmt)22 constexpr void test(const CharT* fmt) {
23   {
24     std::basic_format_parse_context<CharT> context(fmt);
25     assert(std::to_address(context.end()) == &fmt[3]);
26     ASSERT_NOEXCEPT(context.end());
27   }
28   {
29     std::basic_string_view view{fmt};
30     std::basic_format_parse_context context(view);
31     assert(context.end() == view.end());
32     ASSERT_NOEXCEPT(context.end());
33   }
34 }
35 
test()36 constexpr bool test() {
37   test("abc");
38 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
39   test(L"abc");
40 #endif
41 #ifndef TEST_HAS_NO_CHAR8_T
42   test(u8"abc");
43 #endif
44   test(u"abc");
45   test(U"abc");
46 
47   return true;
48 }
49 
main(int,char **)50 int main(int, char**) {
51   test();
52   static_assert(test());
53 
54   return 0;
55 }
56