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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
// <functional>
// template<class R, class F, class... Args>
// constexpr R invoke_r(F&& f, Args&&... args) // C++23
// noexcept(is_nothrow_invocable_r_v<R, F, Args...>);
//
// Make sure that we diagnose when std::invoke_r is used with a return type that
// would yield a dangling reference to a temporary.
// TODO: We currently can't diagnose because we don't implement reference_converts_from_temporary.
// XFAIL: *
#include <functional>
#include <cassert>
#include "test_macros.h"
void f() {
auto func = []() -> int { return 0; };
std::invoke_r<int&&>(func); // expected-error {{Returning from invoke_r would bind a temporary object}}
}
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