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// template<class Context, class... Args>
14// basic_format_args(format-arg-store<Context, Args...>) -> basic_format_args<Context>;
15
16#include <concepts>
17#include <format>
18
19#include "test_macros.h"
20
21void test() {
22 int i = 1;
23 // Note the Standard way to create a format-arg-store is by using make_format_args.
24 static_assert(std::same_as<decltype(std::basic_format_args(std::make_format_args(i))),
25 std::basic_format_args<std::format_context>>);
26
27#ifndef TEST_HAS_NO_WIDE_CHARACTERS
28 static_assert(std::same_as<decltype(std::basic_format_args(std::make_wformat_args(i))),
29 std::basic_format_args<std::wformat_context>>);
30
31#endif
32}
33

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