[Lazarus] EAccessViolation exception on exit qt5 project in Kubuntu 19.10

[zeljko]

On 4/14/20 1:33 PM, Luca Olivetti via lazarus wrote:
> El 14/4/20 a les 12:55, zeljko ha escrit:
>> On 4/13/20 7:43 PM, Luca Olivetti via lazarus wrote:
>>
>>> Now I tried installing the packaged libqt5pas and still see no segfault.
>>> Note that this isn't a fresh install, I dist-upgraded it (or better 
>>> do-release-upgraded it) many times, but I don't think that should 
>>> matter.
>>
>> IMO, fpc version is important. 
> 
> Yes, I meant that what doesn't matter is that I didn't install 19.10 
> clean but via do-release-upgrade
> 
>> fpc-3.0.4 from distro crashes, fpc-3.0.4 built via fpcupdeluxe works, 
>> fpc-3.2.0beta works (because it's built via fpcupdeluxe ? ).
>> Also, KDE Plasma have bug somewhere in KioCore which triggers on qt 
>> app close - for this, I must test pure Qt5 application to see what's 
>> going on. In this case Qt4 apps are crashing too.
>> How to reproduce such crash: simple form with TOpenDialog or 
>> TSaveDialog, start your project, open dialog, close dialog, close app 
>> and you'll segfaulted.
> 
> not with fpc 3.2.0rc1 (I tried without opening the dialog, opening but 
> cancelling it, opening and selecting a file).

That's good to know :) I've tested dialogs with fpc-3.0.4 and it 
segfaults even with my own build of fpc-3.0.4.

zeljko