From 15b829fd4f5a937541acac277ef097a6e3738775 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Thu, 6 Aug 2009 16:15:56 +0200
Subject: [PATCH] isl_mat_extend: make sure the number of rows never decreases

---
 isl_mat.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/isl_mat.c b/isl_mat.c
index c1ba26e..c96017e 100644
--- a/isl_mat.c
+++ b/isl_mat.c
@@ -57,6 +57,8 @@ struct isl_mat *isl_mat_extend(struct isl_mat *mat,
 	if (mat->max_col < n_col) {
 		struct isl_mat *new_mat;
 
+		if (n_row < mat->n_row)
+			n_row = mat->n_row;
 		new_mat = isl_mat_alloc(mat->ctx, n_row, n_col);
 		if (!new_mat)
 			goto error;
-- 
2.7.4