Ticket #78: sigaction.patch

dios/sys/sched_base.hpp

@@ -255 +255 @@
 
         if ( oldact )
             oldact->sa_handler = sighandlers[sig].f;
-        sighandlers[sig].f = act->sa_handler;
+        
+        if ( act )
+            sighandlers[sig].f = act->sa_handler;
+
         return 0;
     }