From: Glenn Randers-Pehrson <glennrp@gmail.com>
Date: Sun, 20 Aug 2017 19:48:19 +0000 (-0400)
Subject: Handle short months in png_write_iTIME()
X-Git-Tag: 7.0.7-0~89
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=eb2fa6132bc93a2b75a07d6bc915d89b83e83d0d;p=imagemagick

Handle short months in png_write_iTIME()
---

diff --git a/coders/png.c b/coders/png.c
index 8eedbeaa8..3604ed570 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -8202,7 +8202,16 @@ static void write_tIME_chunk(Image *image,png_struct *ping,png_info *info,
     {
       /* wrong for short months */
       ptime.month--;
-      ptime.day=31;
+      if(ptime.month == 2)
+        ptime.day=28;
+      else
+      {
+        if(ptime.month == 4 || ptime.month == 6 || ptime.month == 9 ||
+           ptime.month == 11)
+          ptime.day=30;
+        else
+          ptime.day=31;
+      }
     }
     if (ptime.month == 0)
     {