LyX/Q.../Free crash

[Christian Ehrlicher]

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Michael Gerz schrieb:
> Dear Christian,
> 
> when using LyX 1.4 on Windows with MinGW and Q.../Free, I get a
> segmentation fault.
> 
> src/kernel/qfontdatabase.cpp, line 913, reads
> 
>   fe = loadEngine(script, fp, request, 0, 0, 0 );
> 
> loadEngine() is defined in file src/kernel/qfontdatabase_win.cpp which
> expects a QFontFamily as fourth parameter. Within loadEngine() (line
> 337), family->rawName.lower() is evaluated. However, we get a
> segmentation fault since we explicitly pass 0 as parameter.
> 
> Do you have any idea what the right way is to fix this bug? This is a
> real showstopper for LyX/Win at the moment.
Angus already told me about this crash but had no time to go deeper.
Afais it's your fault because qfontdatabase_x11.cpp and
qfontdatabase_win.cpp (qt4) also don't like NULL there... but it should
be no problem to check for != NULL.
> 
> Thanks in advance!
> 
> Michael
> 
> PS: I also encountered a problem with resizable dialogs. Qt responds
> very sluggish and sometimes it forgets to redraw the dialog. A couple of
> months ago (before the big Qt mergers?) Q.../Free worked much better in
> this case.
I hit this problem too, but currently had no time to see what's going
wrong. I already have a small testcase and hope to fix it asap.

Thx
Christian
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