From 8e92fe1478ccc684839e3f2e620cd317c70eb7ba Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Fri, 19 Oct 2007 16:18:09 +0200
Subject: [PATCH] gen_fun::operator evalue *: always return a valid (possibly
 zero) evalue

---
 genfun.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/genfun.cc b/genfun.cc
index ef3057f..a52df96 100644
--- a/genfun.cc
+++ b/genfun.cc
@@ -832,7 +832,7 @@ gen_fun::operator evalue *() const
     }
     value_clear(factor.d);
     value_clear(factor.x.n);
-    return EP;
+    return EP ? EP : evalue_zero();
 }
 
 ZZ gen_fun::coefficient(Value* params, barvinok_options *options) const
-- 
2.11.4.GIT