From 946f6cebf3480c4fc16c203d862437552c193580 Mon Sep 17 00:00:00 2001
From: Vitor Santos Costa <vsc@dcc.fc.up.pt>
Date: Fri, 10 Oct 2014 12:39:54 +0100
Subject: [PATCH] fix bad exit from undef code.

---
 pl/undefined.yap | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pl/undefined.yap b/pl/undefined.yap
index 0f714e1f2..f81a9fac0 100644
--- a/pl/undefined.yap
+++ b/pl/undefined.yap
@@ -51,6 +51,7 @@ with SICStus Prolog.
 	;
 	user:unknown_predicate_handler(G0,M0,NG)
 	->
+	    '$exit_undefp',
 	    call(M:NG)
 	;
 	'$exit_undefp',