Re: Fatal print bug in Dia 0.97 for windows that causes data loss

[Hans Breuer <hans breuer org>]

At 26.06.2009 00:19, Christian Ridderström wrote:
> On Thu, 25 Jun 2009, Hans Breuer wrote:
>
> > At 25.06.2009 16:38, Christian Ridderström wrote:
> > [...]
> > >  In order to troubleshoot, I've reduced the diagram a lot and I 
> > > currently
> > >  have two versions:
> > >
> > >      bugg07.dia        - freezes when I try to print
> > Is freeze and crash the same thing for you? (I've seen single 
> > rendering of diagrams take minutes, but not for the cairo backend. See 
> > http://hans.breuer.org/dia/dia-wine.htm for the messy details.)
>
> We're talking about a really long time here (many minutes), whereas the 
> diagram printed quickly before. 
After looking into this with you example that time is even infinite ;(

>>> [...]
> > >  So, is there a developer to whom I could send these files so he can 
> > > take a
> > >  look?
> > Yes, me ;)
>
> Ok, I'll do that tomorrow so you can see if you can replicate.
<public-answer-to-private-mail>
At 26.06.2009 10:26, Christian Ridderström wrote:
> Hi Hans,
>
> Here are the two files. You should be able to print bugg07_works.dia,
> whereas bugg07.dia should cause Da to freeze/hang/stop responding.
>
It definitely should not, but indeed it does ;( From my current analysis 
this is a bug in cairo:
http://lists.cairographics.org/archives/cairo/2009-June/017506.html

> Btw, I just tested and instead of printing you can just as well test
> the cases by doing an Export. I exported to PNG, which demonstrates
> the problem. It's still frozen even after composing this email and
> uploading the attachments.
>
Yeah, it can be reproduced with every renderer using cairo, also the 
antialiased display renderer. Thus my mentioning of *completely* disabling 
the cairo plug-in as a temporary measure.

> Since this bug causes a data loss in terms of losing what you haven't
> saved, I wonder if there's an 'auto-save' that could be enabled.
>
It is enabled by default, look for a file <original file path>.autosave

</public-answer-to-private-mail>

> Btw, is it possilble to open (most) diagrams created with 0.97 in the 
> older version of Dia?
Yes, but that can create subtle data loss, because Dia versions are 
silently throwing away stuff they don't understand. One issue from the top 
of my head is the incompatible change of "UML - Association".

Regards,
        Hans

-------- Hans "at" Breuer "dot" Org -----------
Tell me what you need, and I'll tell you how to
get along without it.                -- Dilbert