Index: /trunk/ccl/level-1/x86-trap-support.lisp
===================================================================
--- /trunk/ccl/level-1/x86-trap-support.lisp	(revision 5616)
+++ /trunk/ccl/level-1/x86-trap-support.lisp	(revision 5617)
@@ -178,4 +178,6 @@
     (cond ((zerop signal)               ;thread interrupt
            (cmain))
+          ((< signal 0)
+           (%err-disp code))
           ((= signal #$SIGFPE)
            (multiple-value-bind (operation operands)