From 89075d01c31ee3dd53df7baba94a06d32783fd7e Mon Sep 17 00:00:00 2001
From: anthony <anthony@git.imagemagick.org>
Date: Fri, 18 May 2012 03:40:40 +0000
Subject: [PATCH]

---
 MagickCore/property.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/MagickCore/property.c b/MagickCore/property.c
index 14df00750..4dea2145b 100644
--- a/MagickCore/property.c
+++ b/MagickCore/property.c
@@ -3039,11 +3039,18 @@ MagickExport char *InterpretImageProperties(const ImageInfo *image_info,
     }
     p++; /* advance beyond the percent */
 
+    if ( *p == '\0' ) {
+      (void) ThrowMagickException(exception,GetMagickModule(),
+          OptionWarning,"UnknownImageProperty","\"%%\"");
+      p--;
+      continue;
+    }
+
     /*
       Doubled Percent
     */
     if ( *p == '%' ) {
-        *q++=(*p);
+        *q++='%';
         continue;
       }
 
-- 
2.50.1