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      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 // test forward
     11 
     12 #include <utility>
     13 
     14 #include "test_macros.h"
     15 
     16 struct A
     17 {
     18 };
     19 
     20 A source() {return A();}
     21 const A csource() {return A();}
     22 
     23 int main()
     24 {
     25 #if TEST_STD_VER >= 11
     26     {
     27         std::forward<A&>(source());  // expected-note {{requested here}}
     28         // expected-error@type_traits:* 1 {{static_assert failed "can not forward an rvalue as an lvalue"}}
     29     }
     30 #else
     31     {
     32         std::forward<A&>(source()); // expected-error {{no matching function for call to 'forward'}}
     33     }
     34 #endif
     35     {
     36         const A ca = A();
     37         std::forward<A&>(ca); // expected-error {{no matching function for call to 'forward'}}
     38     }
     39     {
     40         std::forward<A&>(csource());  // expected-error {{no matching function for call to 'forward'}}
     41     }
     42     {
     43         const A ca = A();
     44         std::forward<A>(ca); // expected-error {{no matching function for call to 'forward'}}
     45     }
     46     {
     47         std::forward<A>(csource()); // expected-error {{no matching function for call to 'forward'}}
     48     }
     49     {
     50         A a;
     51         std::forward(a); // expected-error {{no matching function for call to 'forward'}}
     52     }
     53 }
     54