From 617bb9eec0cf9c08cb382c7c4217f4dea985799b Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Sun, 2 Dec 2012 12:22:48 +0100
Subject: [PATCH] isl_map_subtract.c: basic_map_collect_diff: avoid invalid
 access on error

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
---
 isl_map_subtract.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/isl_map_subtract.c b/isl_map_subtract.c
index 0e23ea3f..2c958c76 100644
--- a/isl_map_subtract.c
+++ b/isl_map_subtract.c
@@ -326,6 +326,8 @@ static int basic_map_collect_diff(__isl_take isl_basic_map *bmap,
 	map = isl_map_order_divs(map);
 
 	tab = isl_tab_from_basic_map(bmap, 1);
+	if (!tab)
+		goto error;
 
 	modified = 0;
 	level = 0;
-- 
2.11.4.GIT