--- exception.hpp.orig	2007-05-31 09:56:40.118279400 +0900
+++ exception.hpp	2007-05-31 09:56:57.777366200 +0900
@@ -171,15 +171,14 @@
 #else
     {
         singular ()
             {}
         explicit singular (const char *)
             {}
         void raise () {
-            throw *this;
             std::abort ();
         }
 #endif
     };
 
     struct non_real
 #if ! defined (BOOST_NO_EXCEPTIONS) && ! defined (BOOST_UBLAS_NO_EXCEPTIONS)