/* ---------------------------------------------------------------------------
- * $Id: Schedule.c,v 1.125 2002/02/15 14:49:08 simonmar Exp $
+ * $Id: Schedule.c,v 1.126 2002/02/15 14:53:32 simonmar Exp $
*
* (c) The GHC Team, 1998-2000
*
*/
sp = (P_)su - 1;
+ /* Ensure that async excpetions are blocked now, so we don't get
+ * a surprise exception before we get around to executing the
+ * handler.
+ */
+ if (tso->blocked_exceptions == NULL) {
+ tso->blocked_exceptions = END_TSO_QUEUE;
+ }
+
/* Put the newly-built THUNK on top of the stack, ready to execute
* when the thread restarts.
*/