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 // <iterator>
11 
12 // reverse_iterator
13 
14 // reference operator*() const;
15 
16 // Be sure to respect LWG 198:
17 //    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#198
18 // LWG 198 was superseded by LWG 2360
19 //    http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2360
20 
21 #include <iterator>
22 #include <cassert>
23 
24 class A
25 {
26     int data_;
27 public:
A()28     A() : data_(1) {}
~A()29     ~A() {data_ = -1;}
30 
operator ==(const A & x,const A & y)31     friend bool operator==(const A& x, const A& y)
32         {return x.data_ == y.data_;}
33 };
34 
35 template <class It>
36 void
test(It i,typename std::iterator_traits<It>::value_type x)37 test(It i, typename std::iterator_traits<It>::value_type x)
38 {
39     std::reverse_iterator<It> r(i);
40     assert(*r == x);
41 }
42 
main()43 int main()
44 {
45     A a;
46     test(&a+1, A());
47 }
48