45 lines
851 B
C++
45 lines
851 B
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
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// <functional>
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//
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// reference_wrapper<T>
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//
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// where T is an incomplete type (since C++20)
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#include <functional>
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#include <cassert>
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#include "test_macros.h"
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struct Foo;
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Foo& get_foo();
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void test() {
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Foo& foo = get_foo();
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std::reference_wrapper<Foo> ref{foo};
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assert(&ref.get() == &foo);
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}
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struct Foo { };
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Foo& get_foo() {
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static Foo foo;
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return foo;
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}
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int main(int, char**) {
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test();
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return 0;
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}
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