Unit tests for unordered containers.

[SVN r2731]

test/const_iterator_fail_test.cpp

@@ -0,0 +1,16 @@
+
+//  Copyright Daniel James 2005. Use, modification, and distribution are
+//  subject to the Boost Software License, Version 1.0. (See accompanying
+//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/unordered_map.hpp>
+
+void func()
+{
+    typedef boost::unordered_map<int, int> map;
+    typedef map::iterator iterator;
+    typedef map::const_iterator const_iterator;
+
+    const_iterator x;
+    iterator y(x);
+}