diff --git a/src/exception.cpp b/src/exception.cpp
index 336527d..e48e9c4 100644
--- a/src/exception.cpp
+++ b/src/exception.cpp
@@ -72,8 +72,11 @@
 	// on Darwin, there is a helper function so __cxa_get_globals is private
     return __cxxabiapple::__cxa_uncaught_exception();
 #else
-    __cxa_eh_globals * globals = __cxa_get_globals();
-    return (globals->uncaughtExceptions != 0);
+    #warning uncaught_exception not yet implemented
+    ::abort();
+    // Not provided by Ubuntu gcc-4.2.4's cxxabi.h.
+    // __cxa_eh_globals * globals = __cxa_get_globals();
+    // return (globals->uncaughtExceptions != 0);
 #endif
 }
 
@@ -168,4 +171,3 @@
 	::abort();
 #endif
 }
-