From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 25 Jun 2010 17:42:23 +0000 (+0200)
Subject: isl_map_subtract.c: tab_add_constraints: avoid NULL pointer dereference
X-Git-Tag: isl-0.03~55
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bd50ecefab3a64580f36df10e30d9032c40070cc;p=platform%2Fupstream%2Fisl.git

isl_map_subtract.c: tab_add_constraints: avoid NULL pointer dereference
---

diff --git a/isl_map_subtract.c b/isl_map_subtract.c
index 2cbdb01..53664c5 100644
--- a/isl_map_subtract.c
+++ b/isl_map_subtract.c
@@ -49,6 +49,8 @@ static int tab_add_constraints(struct isl_tab *tab,
 		return -1;
 
 	v = isl_vec_alloc(bmap->ctx, 1 + tab_total);
+	if (!v)
+		return -1;
 
 	for (i = 0; i < bmap->n_eq; ++i) {
 		expand_constraint(v, dim, bmap->eq[i], div_map, bmap->n_div);