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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 // <functional>
     11 
     12 // reference_wrapper
     13 
     14 // template <ObjectType T> reference_wrapper<T> ref(T& t);
     15 
     16 // Don't allow binding to a temp
     17 
     18 // XFAIL: c++98, c++03
     19 
     20 #include <functional>
     21 
     22 struct A {};
     23 
     24 const A source() {return A();}
     25 
     26 int main()
     27 {
     28     std::reference_wrapper<const A> r = std::ref(source());
     29 }
     30