1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // UNSUPPORTED: libcpp-has-no-threads 11 // UNSUPPORTED: c++98, c++03 12 13 // <future> 14 15 // class shared_future<R> 16 17 // shared_future(const shared_future& rhs); 18 // noexcept in C++17 19 20 #include <future> 21 #include <cassert> 22 23 #include "test_macros.h" 24 main()25int main() 26 { 27 { 28 typedef int T; 29 std::promise<T> p; 30 std::shared_future<T> f0 = p.get_future(); 31 std::shared_future<T> f = f0; 32 #if TEST_STD_VER > 14 33 static_assert(noexcept(std::shared_future<T>{f0}), "" ); 34 #endif 35 assert(f0.valid()); 36 assert(f.valid()); 37 } 38 { 39 typedef int T; 40 std::shared_future<T> f0; 41 std::shared_future<T> f = f0; 42 assert(!f0.valid()); 43 assert(!f.valid()); 44 } 45 { 46 typedef int& T; 47 std::promise<T> p; 48 std::shared_future<T> f0 = p.get_future(); 49 std::shared_future<T> f = f0; 50 assert(f0.valid()); 51 assert(f.valid()); 52 } 53 { 54 typedef int& T; 55 std::shared_future<T> f0; 56 std::shared_future<T> f = std::move(f0); 57 assert(!f0.valid()); 58 assert(!f.valid()); 59 } 60 { 61 typedef void T; 62 std::promise<T> p; 63 std::shared_future<T> f0 = p.get_future(); 64 std::shared_future<T> f = f0; 65 assert(f0.valid()); 66 assert(f.valid()); 67 } 68 { 69 typedef void T; 70 std::shared_future<T> f0; 71 std::shared_future<T> f = f0; 72 assert(!f0.valid()); 73 assert(!f.valid()); 74 } 75 } 76