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: c++03, c++11, c++14, c++17, c++20, c++23
10
11 // <format>
12
13 // template<class charT, class... Args>
14 // class basic_format_string<charT, type_identity_t<Args>...>
15 //
16 // basic_format_string(runtime-format-string<charT> s) noexcept : str(s.str) {}
17 //
18 // Additional testing is done in
19 // - libcxx/test/std/utilities/format/format.functions/format.runtime_format.pass.cpp
20 // - libcxx/test/std/utilities/format/format.functions/format.locale.runtime_format.pass.cpp
21
22 #include <format>
23 #include <cassert>
24
25 #include "test_macros.h"
26
main(int,char **)27 int main(int, char**) {
28 static_assert(noexcept(std::format_string<>{std::runtime_format(std::string_view{})}));
29 {
30 std::format_string<> s = std::runtime_format("}{invalid format string}{");
31 assert(s.get() == "}{invalid format string}{");
32 }
33
34 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
35 static_assert(noexcept(std::wformat_string<>{std::runtime_format(std::wstring_view{})}));
36 {
37 std::wformat_string<> s = std::runtime_format(L"}{invalid format string}{");
38 assert(s.get() == L"}{invalid format string}{");
39 }
40 #endif // TEST_HAS_NO_WIDE_CHARACTERS
41
42 return 0;
43 }
44