#171 Barcode string all zero's

[Michelle Dupuis]

It has happened to me a few times (rarely) that the generatored barcode is all zeros. This happens with both QR code and PDF417 barcodes - so if this is a bug then it's some code that both have in common.

What's interesting is that the generated barcode is the correct length, just the image is for a string of all zero's. For example, "ABCD" will become "0000" based on the generated barcode.

I'm open to the fact there might be a bug in my code...but my code is also very simple so I'm not sure. Has anyone else encountered such a problem with the zint library?

[Robin Stuart]

HI Michelle,

Thank you for letting us know about this problem.

I'm afraid I haven't seen this happen - and this would seem to be quite a concerning bug. Could you possibly share any more information about how I could reproduce this issue?

Can I assume you're using the API? What other parameters (if any) are you setting?

The only code which I can think of which are shared by QR and PDF417 are used by most of the other symbologies as well.

Robin.

[Michelle Dupuis]

I can't seem to reproduce the problem at will. Once in a while I just see the output barcode of all zero's, and my program log does suggests all steps executed without error. If I can figure out how to reproduce I'll post more info. For now, maybe this post will just help someone else who experiences the same symptom

[Harald Oehlmann]

As platform windows and Linux have different memory management, it might be helpful to post your platform, linking methots, bit size etc.

Thank you,
Harald

[Git Lost]

Given the age of this, am closing this now. Of course if a reproducible example can be given it will be re-opened, thanks...