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
10
11// <format>
12
13// class format_error;
14
15#include <format>
16#include <type_traits>
17#include <cstring>
18#include <string>
19#include <cassert>
20
21#include "test_macros.h"
22
23int main(int, char**) {
24 static_assert(std::is_base_of_v<std::runtime_error, std::format_error>);
25 static_assert(std::is_polymorphic_v<std::format_error>);
26
27 {
28 const char* msg = "format_error message c-string";
29 std::format_error e(msg);
30 assert(std::strcmp(e.what(), msg) == 0);
31 std::format_error e2(e);
32 assert(std::strcmp(e2.what(), msg) == 0);
33 e2 = e;
34 assert(std::strcmp(e2.what(), msg) == 0);
35 }
36 {
37 std::string msg("format_error message std::string");
38 std::format_error e(msg);
39 assert(e.what() == msg);
40 std::format_error e2(e);
41 assert(e2.what() == msg);
42 e2 = e;
43 assert(e2.what() == msg);
44 }
45
46 return 0;
47}
48

source code of libcxx/test/std/utilities/format/format.error/format.error.pass.cpp