a7f9895cc1
Since those features are general properties of the environment, it makes sense to use them from libc++abi too, and so the name libcpp-has-no-xxx doesn't make sense. Differential Revision: https://reviews.llvm.org/D126482
83 lines
1.9 KiB
C++
83 lines
1.9 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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//
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// UNSUPPORTED: no-threads
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// UNSUPPORTED: c++03
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// <future>
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// class shared_future<R>
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// shared_future& operator=(const shared_future& rhs);
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// noexcept in C++17
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#include <future>
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#include <cassert>
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#include "test_macros.h"
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int main(int, char**)
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{
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{
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typedef int T;
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std::promise<T> p;
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std::shared_future<T> f0 = p.get_future();
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std::shared_future<T> f;
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f = f0;
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#if TEST_STD_VER > 14
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static_assert(noexcept(f = f0), "" );
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#endif
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assert(f0.valid());
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assert(f.valid());
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}
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{
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typedef int T;
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std::shared_future<T> f0;
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std::shared_future<T> f;
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f = f0;
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assert(!f0.valid());
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assert(!f.valid());
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}
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{
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typedef int& T;
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std::promise<T> p;
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std::shared_future<T> f0 = p.get_future();
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std::shared_future<T> f;
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f = f0;
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assert(f0.valid());
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assert(f.valid());
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}
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{
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typedef int& T;
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std::shared_future<T> f0;
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std::shared_future<T> f;
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f = f0;
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assert(!f0.valid());
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assert(!f.valid());
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}
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{
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typedef void T;
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std::promise<T> p;
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std::shared_future<T> f0 = p.get_future();
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std::shared_future<T> f;
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f = f0;
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assert(f0.valid());
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assert(f.valid());
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}
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{
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typedef void T;
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std::shared_future<T> f0;
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std::shared_future<T> f;
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f = f0;
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assert(!f0.valid());
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assert(!f.valid());
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}
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return 0;
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}
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