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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
// struct from_range_t { explicit from_range_t() = default; }; // Since C++23
// inline constexpr from_range_t from_range{}; // Since C++23
#include <ranges>
template <class T>
void check(std::from_range_t);
template <class T>
concept IsCtrNonexplicit = requires {
check<T>({});
};
// Verify that the constructor is `explicit`.
static_assert(!IsCtrNonexplicit<std::from_range_t>);
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