32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// <functional>
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// template<class R, class F, class... Args>
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// constexpr R invoke_r(F&& f, Args&&... args) // C++23
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// noexcept(is_nothrow_invocable_r_v<R, F, Args...>);
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//
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// Make sure that we diagnose when std::invoke_r is used with a return type that
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// would yield a dangling reference to a temporary.
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// TODO: We currently can't diagnose because we don't implement reference_converts_from_temporary.
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// XFAIL: *
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#include <functional>
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#include <cassert>
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#include "test_macros.h"
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void f() {
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auto func = []() -> int { return 0; };
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std::invoke_r<int&&>(func); // expected-error {{Returning from invoke_r would bind a temporary object}}
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}
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