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45 lines
928 B
C++
45 lines
928 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++98, c++03, c++11, c++14, c++17
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// <functional>
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//
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// reference_wrapper
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//
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// template <ObjectType T> reference_wrapper<const T> cref(const T& 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 const& foo = get_foo();
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std::reference_wrapper<Foo const> ref = std::cref(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() {
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test();
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}
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