From 057a5d2cf6f95e2fbea1dc2abec0bc9463f77052 Mon Sep 17 00:00:00 2001
From: dirk <dirk@git.imagemagick.org>
Date: Tue, 21 Apr 2015 21:05:39 +0000
Subject: [PATCH] Added option to preserve a corrupt image to the png coder.

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

diff --git a/coders/png.c b/coders/png.c
index cf8cf8a38..108e84492 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -2180,7 +2180,14 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
           "  exit ReadOnePNGImage() with error.");
 
       if (image != (Image *) NULL)
-        image->columns=0;
+        {
+          const char
+            *option;
+
+          option=GetImageOption(image_info,"png:preserve-corrupt-image");
+          if (IsStringTrue(option) == MagickFalse)
+            image->columns=0;
+        }
 
       return(GetFirstImageInList(image));
     }
-- 
2.40.0