[QT 4.6] QTBUG-11658 (Crash from stylesheet due to dangling widget pointers in cache)

Ben35

Hello,

I have a big problem in my software. I am obliged to use Qt4.6 and i'm using a big stylesheet.

I have this bug (https://bugreports.qt.io/browse/QTBUG-11658) that causes crashes when closing tabs or mainwindows for example. Does anyone had the same issue ? Is there a way to avoid those crashes ?

Thanks a lot,

Benoit

Christian Ehrlicher

Upgrade to Qt4.8 since it's fixed there. Or even better - upgrade to Qt5.
If you can't upgrade you have to check the difference between 4.7.x and 4.8.0 so you can maybe find out what changed and apply the patch to your old Qt version.

Ben35

OK. Thanks for answering.

No other solutions ?

JonB

@Ben35
It's a bug that was reported and resolved 8 years ago. No workaround is offered in the bug report. @Christian-Ehrlicher has suggested you compare the relevant differences in the solved release. I don't see that you're likely to get a better solution....

aha_1980

@Ben35

There is even the commit referenced in the bug report, which leads you to https://github.com/qt/qt/commit/7b63ce043dfaec5ec83d938b1cea8ee0ead614ff

So if you don't want to update, you can compile Qt 4.6 from source with this patch applied.

SGaist

Hi,

Just in case, the official source tree is : http://code.qt.io/cgit/qt/qt.git/commit/?id=7b63ce043dfaec5ec83d938b1cea8ee0ead614ff

rookie 0

Hi @Ben35 ,
Can you provide demo code to reproduce this issue?
I use the code in QTGUI-11658 to link qt_4.7.4. But it can't reproduce this crash. I want to verify crash root cause in company product.
Thanks.