From: Sven Verdoolaege <skimo@kotnet.org>
Date: Mon, 3 Dec 2012 12:37:42 +0000 (+0100)
Subject: isl_schedule.c: add_intra_constraints: avoid invalid access on error
X-Git-Tag: isl-0.11.1~6
X-Git-Url: https://repo.or.cz/w/isl.git/commitdiff_plain/4ba406467a8505d9d76657da124cf9557308ce3f

isl_schedule.c: add_intra_constraints: avoid invalid access on error

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
---

diff --git a/isl_schedule.c b/isl_schedule.c
index ec314cfe..0e6a3aa8 100644
--- a/isl_schedule.c
+++ b/isl_schedule.c
@@ -2190,6 +2190,8 @@ static int add_intra_constraints(struct isl_sched_graph *graph,
 	struct isl_sched_node *node = edge->src;
 
 	coef = intra_coefficients(graph, map);
+	if (!coef)
+		return -1;
 
 	dim = isl_space_domain(isl_space_unwrap(isl_basic_set_get_space(coef)));