From 35633b3d2561f55d1cd4b671af3d8cbb57bc5221 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Tue, 21 Apr 2015 14:29:30 +0200
Subject: [PATCH] isl_coalesce.c: check_facets: improve error handling

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

diff --git a/isl_coalesce.c b/isl_coalesce.c
index b6a05c15..57d28efe 100644
--- a/isl_coalesce.c
+++ b/isl_coalesce.c
@@ -484,6 +484,8 @@ static enum isl_change check_facets(int i, int j,
 			if (info[j].ineq[l] != STATUS_CUT)
 				continue;
 			stat = status_in(info[j].bmap->ineq[l], info[i].tab);
+			if (stat < 0)
+				return isl_change_error;
 			if (stat != STATUS_VALID)
 				break;
 		}
-- 
2.11.4.GIT