From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 27 Jan 2018 01:38:11 +0000 (-0500)
Subject: Eliminate use of uninitialized value in GetFillAlpha()
X-Git-Tag: 7.0.7-23~275
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=8bb46b3381f8440fbf90bd88e1909dc83e089790;p=imagemagick

Eliminate use of uninitialized value in GetFillAlpha()
Credit OSS Fuzz
---

diff --git a/MagickCore/draw.c b/MagickCore/draw.c
index 68dbb747a..ad2c28104 100644
--- a/MagickCore/draw.c
+++ b/MagickCore/draw.c
@@ -3941,7 +3941,7 @@ static double GetFillAlpha(PolygonInfo *polygon_info,const double mid,
         continue;
       }
     i=(ssize_t) MagickMax((double) p->highwater,1.0);
-    for ( ; i < (ssize_t) p->number_points; i++)
+    for ( ; i < (ssize_t) (p->number_points-1); i++)
       if ((double) y <= p->points[i].y)
         break;
     q=p->points+i-1;