From 2390fd397522c757632375c5aa395831b036f225 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Sun, 2 Dec 2012 15:34:09 +0100
Subject: [PATCH] isl_basic_map_eliminate_vars: avoid invalid access on error

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

diff --git a/isl_map_simplify.c b/isl_map_simplify.c
index c3bbbc41..c83888a0 100644
--- a/isl_map_simplify.c
+++ b/isl_map_simplify.c
@@ -1449,6 +1449,8 @@ struct isl_basic_map *isl_basic_map_eliminate_vars(
 	bmap = isl_basic_map_cow(bmap);
 	for (d = pos + n - 1; d >= 0 && d >= pos; --d)
 		bmap = remove_dependent_vars(bmap, d);
+	if (!bmap)
+		return NULL;
 
 	for (d = pos + n - 1;
 	     d >= 0 && d >= total - bmap->n_div && d >= pos; --d)
-- 
2.11.4.GIT