From 43cecedb497b7204971b4a6bac068cc05148649e Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 25 Jun 2010 17:18:06 +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 cf3cfbf..362c378 100644
--- a/isl_convex_hull.c
+++ b/isl_convex_hull.c
@@ -1901,6 +1901,8 @@ struct isl_basic_map *isl_map_convex_hull(struct isl_map *map)
 	}
 
 	convex_hull = isl_basic_map_overlying_set(bset, model);
+	if (!convex_hull)
+		return NULL;
 
 	ISL_F_SET(convex_hull, ISL_BASIC_MAP_NO_IMPLICIT);
 	ISL_F_SET(convex_hull, ISL_BASIC_MAP_ALL_EQUALITIES);
-- 
2.7.4