From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 20 May 2011 10:02:03 +0000 (+0200)
Subject: isl_qpolynomial_from_aff: create private copy of divs
X-Git-Tag: isl-0.07~174
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e2cbb6c20e8bb3847d96fb485336ac6b763ec02e;p=platform%2Fupstream%2Fisl.git

isl_qpolynomial_from_aff: create private copy of divs

Otherwise, reduce_divs could end up modifying the divs of the input isl_aff.

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

diff --git a/isl_polynomial.c b/isl_polynomial.c
index 046b63a..ff3196f 100644
--- a/isl_polynomial.c
+++ b/isl_polynomial.c
@@ -2973,6 +2973,7 @@ __isl_give isl_qpolynomial *isl_qpolynomial_from_aff(__isl_take isl_aff *aff)
 
 	isl_mat_free(qp->div);
 	qp->div = isl_mat_copy(aff->ls->div);
+	qp->div = isl_mat_cow(qp->div);
 	if (!qp->div)
 		goto error;