From: Sven Verdoolaege <skimo@kotnet.org>
Date: Mon, 12 Nov 2012 11:13:15 +0000 (+0100)
Subject: isl_aff_gist: add missing isl_vec_cow
X-Git-Tag: isl-0.11~80
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5dfeb26113fb6828f2973fa3cfd0816dbd7838a8;p=platform%2Fupstream%2Fisl.git

isl_aff_gist: add missing isl_vec_cow

We could end up modifying a different isl_aff that originated from
the same isl_aff as the one being modified.

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

diff --git a/isl_aff.c b/isl_aff.c
index 372afb6..79fd8d5 100644
--- a/isl_aff.c
+++ b/isl_aff.c
@@ -1276,7 +1276,8 @@ static __isl_give isl_aff *isl_aff_substitute_equalities_lifted(
 
 	aff->ls = isl_local_space_substitute_equalities(aff->ls,
 							isl_basic_set_copy(eq));
-	if (!aff->ls)
+	aff->v = isl_vec_cow(aff->v);
+	if (!aff->ls || !aff->v)
 		goto error;
 
 	total = 1 + isl_space_dim(eq->dim, isl_dim_all);