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 packaged_task<R(ArgTypes...)> 16 // template <class F> 17 // packaged_task(F&& f); 18 // These constructors shall not participate in overload resolution if 19 // decay<F>::type is the same type as std::packaged_task<R(ArgTypes...)>. 20 21 #include <future> 22 #include <cassert> 23 24 struct A {}; 25 typedef std::packaged_task<A(int, char)> PT; 26 typedef volatile std::packaged_task<A(int, char)> VPT; 27 28 29 int main() 30 { 31 VPT init{}; 32 auto const& c_init = init; 33 PT p1{init}; // expected-error {{no matching constructor}} 34 PT p2{c_init}; // expected-error {{no matching constructor}} 35 PT p3{std::move(init)}; // expected-error {{no matching constructor for initialization of 'PT' (aka 'packaged_task<A (int, char)>')}} 36 } 37
