From e2cbb6c20e8bb3847d96fb485336ac6b763ec02e Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 20 May 2011 12:02:03 +0200
Subject: [PATCH] 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>
---
 isl_polynomial.c | 1 +
 1 file changed, 1 insertion(+)

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;
 
-- 
2.7.4