From 9876262f739cbe5b78030ec81b004631b12f29ca Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 5 Jul 2013 19:36:26 +0200
Subject: [PATCH] isl_vertices.c: add_chamber: accept NULL pointer on zero-size
 allocation

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
---
 isl_vertices.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/isl_vertices.c b/isl_vertices.c
index 818f2856..09ab031b 100644
--- a/isl_vertices.c
+++ b/isl_vertices.c
@@ -627,7 +627,7 @@ static int add_chamber(struct isl_chamber_list **list,
 	if (!c)
 		goto error;
 	c->c.vertices = isl_alloc_array(tab->mat->ctx, int, n_vertices);
-	if (!c->c.vertices)
+	if (n_vertices && !c->c.vertices)
 		goto error;
 	c->c.dom = isl_basic_set_from_basic_map(isl_basic_map_copy(tab->bmap));
 	c->c.dom = isl_basic_set_set_rational(c->c.dom);
-- 
2.11.4.GIT