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
source()24 const A source() {return A();}
25
main()26 int main()
27 {
28 std::reference_wrapper<const A> r = std::ref(source());
29 }
30