From 7fad22baf5c29d928a155c829ce0db61305ef51e Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 25 Jun 2010 17:16:56 +0200
Subject: [PATCH] isl_basic_map_normalize_constraints: avoid NULL pointer
 dereference

---
 isl_map_simplify.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/isl_map_simplify.c b/isl_map_simplify.c
index 8c2dde0c..7326f3aa 100644
--- a/isl_map_simplify.c
+++ b/isl_map_simplify.c
@@ -317,6 +317,9 @@ struct isl_basic_map *isl_basic_map_normalize_constraints(
 	isl_int gcd;
 	unsigned total = isl_basic_map_total_dim(bmap);
 
+	if (!bmap)
+		return NULL;
+
 	isl_int_init(gcd);
 	for (i = bmap->n_eq - 1; i >= 0; --i) {
 		isl_seq_gcd(bmap->eq[i]+1, total, &gcd);
-- 
2.11.4.GIT