Boost Exception now works with BOOST_NO_RTTI and/or BOOST_NO_TYPEID.

[SVN r48429]

include/boost/exception/detail/get_boost_exception.hpp

@@ -0,0 +1,47 @@
+//Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc.
+
+//Distributed under 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)
+
+#ifndef UUID_B9A8291074CA11DD94BFC77156D89593
+#define UUID_B9A8291074CA11DD94BFC77156D89593
+
+#include <boost/exception/exception.hpp>
+
+namespace
+boost
+    {
+    namespace
+    exception_detail
+        {
+#ifdef BOOST_NO_RTTI
+        template <class T>
+        exception const *
+        get_boost_exception( T const * )
+            {
+            try
+                {
+                throw;
+                }
+            catch(
+            exception & x )
+                {
+                return &x;
+                }
+            catch(...)
+                {
+                return 0;
+                }
+            }
+#else
+        template <class T>
+        exception const *
+        get_boost_exception( T const * x )
+            {
+            return dynamic_cast<exception const *>(x);
+            }
+#endif
+        }
+    }
+
+#endif