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 // <future> 11 12 // class future<R> 13 14 // future(); 15 16 #include <future> 17 #include <cassert> 18 19 int main() 20 { 21 { 22 std::future<int> f; 23 assert(!f.valid()); 24 } 25 { 26 std::future<int&> f; 27 assert(!f.valid()); 28 } 29 { 30 std::future<void> f; 31 assert(!f.valid()); 32 } 33 } 34
