From: cristy <urban-warrior@git.imagemagick.org>
Date: Wed, 5 Jan 2011 15:45:02 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~8320
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=afee4d36aae894a74306a3c492437ca55dce2bad;p=imagemagick

---

diff --git a/coders/png.c b/coders/png.c
index 90bbd5390..c4c862452 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -2697,9 +2697,9 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
               if (ping_color_type == 4)
                 {
                   q->opacity=(*p << 8) | *(p+1);
-                  q->opacity*=65537U;
+                  q->opacity*=65537L;
                   q->opacity=(Quantum) GetAlphaPixelComponent(q);
-                  if (p->opacity != OpaqueOpacity)
+                  if (q->opacity != OpaqueOpacity)
                     found_transparent_pixel = MagickTrue; 
                   p+=2;
                   q++;