X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=isl_tab.c;h=3fc0367ff4de20295753d26428f2ad632bfeb679;hb=3961a579833bebbcd7192f4f4fa5464937b6562a;hp=a5e55b066ae29b265018c7e831d3bc6a7dc30633;hpb=747237f4a946ad88d45822eb281dc70665b81a76;p=platform%2Fupstream%2Fisl.git

diff --git a/isl_tab.c b/isl_tab.c
index a5e55b0..3fc0367 100644
--- a/isl_tab.c
+++ b/isl_tab.c
@@ -1,7 +1,7 @@
 /*
  * Copyright 2008-2009 Katholieke Universiteit Leuven
  *
- * Use of this software is governed by the GNU LGPLv2.1 license
+ * Use of this software is governed by the MIT license
  *
  * Written by Sven Verdoolaege, K.U.Leuven, Departement
  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
@@ -787,6 +787,8 @@ static int push_union(struct isl_tab *tab,
 {
 	struct isl_tab_undo *undo;
 
+	if (!tab)
+		return -1;
 	if (!tab->need_undo)
 		return 0;