[Koha-bugs] [Bug 22429] Infinite loop in patron card printing
bugzilla-daemon at bugs.koha-community.org
bugzilla-daemon at bugs.koha-community.org
Tue Mar 5 01:57:44 CET 2019
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22429
--- Comment #11 from David Cook <dcook at prosentient.com.au> ---
(In reply to Christian Stelzenmüller from comment #9)
> > "Aha... it's the parentheses which are the problem. They're being interpreted as
> > regex metacharacters and not literal values!"
>
> We noticed that there seems to be an infinite loop if the template has some
> or all entries with "0" in it (like in default when creating a new
> template). Could this be the same cause?
Sorry, I just realized that you were referring to the template rather than the
layout.
Yes, it would be a related problem, but a separate issue.
If 'label_width' is 0, then $self->{'width'} will be 0.
That means that this condition will be triggered:
if (($string_width + $text_attribs->{'llx'}) > $self->{'width'})
And because $self->{'width'} is 0, then the following condition would never
feasibly be triggered:
if (($string_width + $text_attribs->{'llx'}) < $self->{'width'})
And this condition is the only thing that can stop the infinite loop.
Really the line wrapping code looks like it would benefit from a re-write.
I'd suggest opening a new bug report.
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