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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 move
     11 
     12 #include <utility>
     13 #include <cassert>
     14 
     15 class move_only
     16 {
     17 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     18     move_only(const move_only&);
     19     move_only& operator=(const move_only&);
     20 #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     21     move_only(move_only&);
     22     move_only& operator=(move_only&);
     23 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     24 
     25 public:
     26 
     27 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
     28     move_only(move_only&&) {}
     29     move_only& operator=(move_only&&) {}
     30 #else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     31     operator std::__rv<move_only> () {return std::__rv<move_only>(*this);}
     32     move_only(std::__rv<move_only>) {}
     33 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     34 
     35     move_only() {}
     36 };
     37 
     38 move_only source() {return move_only();}
     39 const move_only csource() {return move_only();}
     40 
     41 void test(move_only) {}
     42 
     43 int main()
     44 {
     45     move_only a;
     46     const move_only ca = move_only();
     47 
     48     test(std::move(ca));
     49 }
     50