From: cristy <urban-warrior@git.imagemagick.org>
Date: Fri, 1 Jun 2012 16:42:19 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~5511
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0a21514d71c18f30429bbc208cf0ff7fd53955d0;p=imagemagick

---

diff --git a/coders/gif.c b/coders/gif.c
index 39c90cd14..8af12bfe0 100644
--- a/coders/gif.c
+++ b/coders/gif.c
@@ -1322,6 +1322,12 @@ static Image *ReadGIFImage(const ImageInfo *image_info,ExceptionInfo *exception)
         }
         colormap=(unsigned char *) RelinquishMagickMemory(colormap);
       }
+    for (i=0; i < (ssize_t) image->colors; i++)
+      if ((image->colormap[i].red != image->colormap[i].green) ||
+          (image->colormap[i].green != image->colormap[i].blue))
+        break;
+    if (i == (ssize_t) image->colors)
+      SetImageColorspace(image,GRAYColorspace,exception);
     if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
       if (image->scene >= (image_info->scene+image_info->number_scenes-1))
         break;