From c4b5def32c9598afd07a6c678b562adc841cd4b8 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 25 Jun 2010 18:44:36 +0200
Subject: [PATCH] isl_basic_map_eliminate_vars: avoid NULL pointer dereference

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

diff --git a/isl_map_simplify.c b/isl_map_simplify.c
index 7326f3a..5327cc8 100644
--- a/isl_map_simplify.c
+++ b/isl_map_simplify.c
@@ -1287,6 +1287,8 @@ struct isl_basic_map *isl_basic_map_eliminate_vars(
 		}
 		bmap = isl_basic_map_extend_constraints(bmap,
 				0, n_lower * n_upper);
+		if (!bmap)
+			goto error;
 		for (i = bmap->n_ineq - 1; i >= 0; --i) {
 			int last;
 			if (isl_int_is_zero(bmap->ineq[i][1+d]))
-- 
2.7.4