fix for http://tinyurl.com/zuohe

[SVN r35101]

test/iterator_facade.cpp

@@ -56,7 +56,35 @@ struct proxy
         
     int& state;
 };
-    
+
+struct value { int x; };
+
+struct input_iter
+  : boost::iterator_facade<
+        input_iter
+      , value
+      , boost::single_pass_traversal_tag
+      , value
+    >
+{
+ public:
+    input_iter() {}
+
+    void increment()
+    {
+    }
+    value
+    dereference() const
+    {
+        return value();
+    }
+
+    bool equal(input_iter const& y) const
+    {
+        return false;
+    }
+};
+
 int main()
 {
     int state = 0;
@@ -65,5 +93,12 @@ int main()
     boost::readable_iterator_test(counter_iterator<proxy>(&state), 3);
     boost::writable_iterator_test(counter_iterator<proxy>(&state), 9, 7);
     BOOST_ASSERT(state == 8);
+
+    // test for a fix to http://tinyurl.com/zuohe
+    // These two lines should be equivalent (and both compile)
+    input_iter p;
+    (*p).x = 2;
+    p->x = 2;
+    
     return 0;
 }