From: Glenn Randers-Pehrson <glennrp@gmail.com>
Date: Wed, 13 Sep 2017 00:32:45 +0000 (-0400)
Subject: Fix maximum minute in PNG tIME chunk
X-Git-Tag: 7.0.7-3~57
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1e9e64d781aedbcf48d1b19f1fdd8f514fcec5ce;p=imagemagick

Fix maximum minute in PNG tIME chunk
---

diff --git a/ChangeLog b/ChangeLog
index f62ee6fcd..b1fb00639 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,6 @@
 2017-09-12  7.0.7-3 Glenn Randers-Pehrson <glennrp@image...>
-  * Maximum valid hour is 23, not 24, in the PNG tIME chunk.
+  * Maximum valid hour is 23, not 24, in the PNG tIME chunk,
+    and maximum valid minute is 59, not 60.
 
 2017-09-12  7.0.7-2 Cristy  <quetzlzacatenango@image...>
   * Release ImageMagick version 7.0.7-2, GIT revision 21089:4e46ad9dd:20170912.
diff --git a/coders/png.c b/coders/png.c
index e4c15fbd8..d41bdfb78 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -8198,7 +8198,7 @@ static void write_tIME_chunk(Image *image,png_struct *ping,png_info *info,
     month++;
     year--;
   }
-  if (minute > 60)
+  if (minute > 59)
   {
      hour++;
      minute-=60;