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// template<class Context, class... Args>
13// basic_format_args(format-arg-store<Context, Args...>) -> basic_format_args<Context>;
14
15#include <concepts>
16#include <format>
17
18#include "test_macros.h"
19
20void test() {
21 int i = 1;
22 // Note the Standard way to create a format-arg-store is by using make_format_args.
23 static_assert(std::same_as<decltype(std::basic_format_args(std::make_format_args(i))),
24 std::basic_format_args<std::format_context>>);
25
26#ifndef TEST_HAS_NO_WIDE_CHARACTERS
27 static_assert(std::same_as<decltype(std::basic_format_args(std::make_wformat_args(i))),
28 std::basic_format_args<std::wformat_context>>);
29
30#endif
31}
32

source code of libcxx/test/std/utilities/format/format.arguments/format.args/ctad.compile.pass.cpp