Bug in coder jpeg, function 'WriteProfile'
Posted: 2011-10-12T00:14:30-07:00
Hello
As I tryed to convert an eps to a jpg I've found this bug:
ImageMagick-6.3.9-9
Ghostscript 9.0.4
In file 'coders\jpeg.c' at line 1649:
After concatenating the profile with the namespce the first char of the profile will be overwritten by "GetStringInfoDatum(xmp_profile)[28]='\0'".
This generates an unreadable jpg-file because the xmp_profile should start with the namespace, a null and the profile.
I've testet it with the older ImageMagick-6.7.1-9 and there it works. So I compared the code with ImageMagick-6.7.1-9 and found that in file 'magick\string.c' the function 'StringToStringInfo' changed from
to
This means that after
the length in xmp_profile is 28 instead of 29 (as in 6.7.1-9) which creates this fault.
Solution:
Add a space to the namespace
so that he length will be calculated wit enough space for the following '\0'.
Alex
As I tryed to convert an eps to a jpg I've found this bug:
ImageMagick-6.3.9-9
Ghostscript 9.0.4
In file 'coders\jpeg.c' at line 1649:
Code: Select all
xmp_profile=StringToStringInfo("http://ns.adobe.com/xap/1.0/");
ConcatenateStringInfo(xmp_profile,profile);
GetStringInfoDatum(xmp_profile)[28]='\0';This generates an unreadable jpg-file because the xmp_profile should start with the namespace, a null and the profile.
I've testet it with the older ImageMagick-6.7.1-9 and there it works. So I compared the code with ImageMagick-6.7.1-9 and found that in file 'magick\string.c' the function 'StringToStringInfo' changed from
Code: Select all
string_info=AcquireStringInfo(strlen(string)+1);Code: Select all
string_info=AcquireStringInfo(strlen(string));Code: Select all
xmp_profile=StringToStringInfo("http://ns.adobe.com/xap/1.0/");Solution:
Add a space to the namespace
Code: Select all
xmp_profile=StringToStringInfo("http://ns.adobe.com/xap/1.0/ ");Alex