GraphicsMagick: Add a comment about a purpose of passing arbitra...

changeset 7e93fca0979f in /hg/GraphicsMagick
details: http://hg.GraphicsMagick.org/hg/GraphicsMagick?cmd=changeset;node=7e93fca0979f
summary: Add a comment about a purpose of passing arbitrary header size >=64.

diffstat:

 coders/bmp.c |  4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diffs (18 lines):

diff -r ce684ca1ae8e -r 7e93fca0979f coders/bmp.c
--- a/coders/bmp.c	Wed Aug 09 16:02:19 2023 +0200
+++ b/coders/bmp.c	Wed Aug 09 16:18:34 2023 +0200
@@ -723,10 +723,14 @@
             {
             case 40:
             case 56:
+            case 64:
             case 78:
             case 108: break;
             default: if (bmp_info.size < 64)
                 ThrowBMPReaderException(CorruptImageError, NonOS2HeaderSizeError, image);
+                        /* A value larger than 64 indicates a later version of the OS/2 BMP format.
+                           .... as far as OS/2 development caesed we could consider to
+                           close this Trojan's horse window in future. */
               break;
             }