From: Sven Verdoolaege <skimo@kotnet.org>
Date: Tue, 7 Feb 2012 11:55:43 +0000 (+0100)
Subject: isl_vertices.c: compute_chambers: avoid access to freed data structure
X-Git-Tag: isl-0.10~8^2~22
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=def284dda95bb5ac6714c5b782fc32d182a61257;p=platform%2Fupstream%2Fisl.git

isl_vertices.c: compute_chambers: avoid access to freed data structure

The problem was introduced in 328c78f (isl_tab_from_basic_map: preserve all
constraints in input when tracking, Mon Jan 16 16:55:44 2012 +0100).

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
---

diff --git a/isl_vertices.c b/isl_vertices.c
index 3cc4026..535bc5f 100644
--- a/isl_vertices.c
+++ b/isl_vertices.c
@@ -877,10 +877,10 @@ static __isl_give isl_vertices *compute_chambers(__isl_take isl_basic_set *bset,
 	bset = isl_basic_set_params(bset);
 
 	tab = isl_tab_from_basic_set(bset, 1);
-	isl_basic_set_free(bset);
 	for (i = 0; i < bset->n_ineq; ++i)
 		if (isl_tab_freeze_constraint(tab, i) < 0)
 			goto error;
+	isl_basic_set_free(bset);
 
 	snap = isl_tab_snap(tab);