From a49ca3fe0516ba6b190f60cb6233989121b29955 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Sat, 26 Jun 2010 12:14:56 +0200
Subject: [PATCH] isl_map_convex_hull: avoid NULL pointer dereference

---
 isl_convex_hull.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/isl_convex_hull.c b/isl_convex_hull.c
index f783671f..ac798252 100644
--- a/isl_convex_hull.c
+++ b/isl_convex_hull.c
@@ -1893,6 +1893,8 @@ struct isl_basic_map *isl_map_convex_hull(struct isl_map *map)
 
 	map = isl_map_detect_equalities(map);
 	map = isl_map_align_divs(map);
+	if (!map)
+		goto error;
 	model = isl_basic_map_copy(map->p[0]);
 	set = isl_map_underlying_set(map);
 	if (!set)
-- 
2.11.4.GIT