From: Sven Verdoolaege <skimo@kotnet.org>
Date: Mon, 3 Dec 2012 12:37:42 +0000 (+0100)
Subject: isl_schedule.c: add_inter_constraints: avoid invalid access on error
X-Git-Tag: isl-0.11.1~5
X-Git-Url: https://repo.or.cz/w/isl.git/commitdiff_plain/ea8425223903fe290fcd3c656b3ce759b7fb8b54

isl_schedule.c: add_inter_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 0e6a3aa8..51e9dc05 100644
--- a/isl_schedule.c
+++ b/isl_schedule.c
@@ -2240,6 +2240,8 @@ static int add_inter_constraints(struct isl_sched_graph *graph,
 	struct isl_sched_node *dst = edge->dst;
 
 	coef = inter_coefficients(graph, map);
+	if (!coef)
+		return -1;
 
 	dim = isl_space_domain(isl_space_unwrap(isl_basic_set_get_space(coef)));