Use of uninitialized value in exiftool.pl executing listg6

[FrankB]

This is really low prio. I was just trying to get info from tag and group names, that might be of use in ExifToolGui, and stumbled upon listg6. Seeing what listg6 does in 11.86 I dont think I have use for it, but I still want to report it.

It appears that somewhere between 11.86 and 12.92 this error was introduced. Sorry I did not go into the trouble of pinpointing exactly what version.

Code Select Expand

C:\temp>exiftool -ver -listg6
11.86
Groups in family 6:
  int8u string int16u int32u rational64u int8s undef int16s int32s rational64s
  float double ifd unicode complex int64u int64s ifd64

C:\temp>cd \

C:\>exiftool -ver -listg6
12.92
Groups in family 6:
  int8u string int16u int32u rational64u int8s undef int16s int32s rational64s
Use of uninitialized value $taglen in addition (+) at C:\Program Files\ExifToolGUI\exiftool_files\exiftool.pl line 4637.
Use of uninitialized value $tag in print at C:\Program Files\ExifToolGUI\exiftool_files\exiftool.pl line 4641.
Frank

[Phil Harvey]

Ah, great!  Thanks for this bug report!

I'll fix this ASAP.

- Phil

[Phil Harvey]

Ah.  The problem is due to the addition of format code 129 (utf8) in the EXIF 3.0 specification added to ExifTool 12.63.  This leaves a gap with a lot of missing EXIF format codes, which is the root of the problem.

Version 12.93 will fix this.

Thanks again.

- Phil

[FrankB]

Really Phil, It's up to me to say:

Thank you.

Frank

[Phil Harvey]

(I just get really happy whenever anyone finds a bug in ExifTool.    Sounds odd, but it's true.)