From 2f8d92593afe1c6c61b3b5b920e0accbbe7888ca Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Sat, 26 Jun 2010 11:45:44 +0200
Subject: [PATCH] isl_equalities.c: parameter_compression_multi: avoid NULL
 pointer dereference

---
 isl_equalities.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/isl_equalities.c b/isl_equalities.c
index 0e1faa5..60c5e94 100644
--- a/isl_equalities.c
+++ b/isl_equalities.c
@@ -186,8 +186,12 @@ static struct isl_mat *parameter_compression_multi(
 	A = isl_mat_left_hermite(A, 0, NULL, NULL);
 	T = isl_mat_sub_alloc(A->ctx, A->row, 0, A->n_row, 0, A->n_row);
 	T = isl_mat_lin_to_aff(T);
+	if (!T)
+		goto error;
 	isl_int_set(T->row[0][0], D);
 	T = isl_mat_right_inverse(T);
+	if (!T)
+		goto error;
 	isl_assert(T->ctx, isl_int_is_one(T->row[0][0]), goto error);
 	T = isl_mat_transpose(T);
 	isl_mat_free(A);
-- 
2.7.4