[Poppler-bugs] [Bug 59927] make qt4 frontend thread-safe

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59927

--- Comment #8 from Adam Reichold <adamreichold at myopera.com> ---
(In reply to comment #6)
> (In reply to comment #5)
> > It'd be cool it someone could do some silly test with two threads one
> > rendering all the time and the other randomly querying stuff like fonts or
> > adding annotations and run it in a loop to make sure no crash happens (using
> > okular as test case is a bit heavy and difficult)
> 
> I'll try to create something suitable today.

I attached my first attempt at such a test case and currently it crashes in
Document::fonts. Actually, sometimes it outright crashes and sometimes there
are just tons of error messages, mostly about of unexpected ends of flate
streams.

I'll try to enlarge test coverage as we progress.

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