From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 14 Feb 2018 12:16:46 +0000 (-0500)
Subject: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6308
X-Git-Tag: 7.0.7-23~37
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=28ba536e302da2d4e6644344af6a4de1430121f6;p=imagemagick

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6308
---

diff --git a/MagickCore/draw.c b/MagickCore/draw.c
index eac32d9ff..cd48710e1 100644
--- a/MagickCore/draw.c
+++ b/MagickCore/draw.c
@@ -3890,7 +3890,7 @@ static double GetFillAlpha(PolygonInfo *polygon_info,const double mid,
             }
           else
             {
-              alpha=1.0/alpha;
+              alpha=PerceptibleReciprocal(alpha);
               beta=delta.x*(y-q->y)-delta.y*(x-q->x);
               distance=alpha*beta*beta;
             }