#288 Unclean exit in 1.5.6 on Linux

[Luigi Baldoni]

If I launch ChessX from the terminal, I see this after closing it:

> chessx
No text-to-speech plug-ins were found.
QLocale(English, Latin, United States) QVector() QLocale(C, Default, Default)
free(): invalid pointer
Aborted (core dumped)

[Jens Nissen]

This is an extremely unwelcome surprise. I posted a beta version 1.5.7 under https://sourceforge.net/projects/chessx/files/chessx/beta/ which tests this condition and disables all access to speech API.
This is not an issue for Windows and Mac OS users as there always is a speech engine.
Nevertheless: IMHO Qt should not exit internally in a constructor - this is not expected behaviour and requires users to pre-test externally for internal implementation details.
This will require a quick 1.5.8 :-(

[Luigi Baldoni]

I just tried 1.5.7, now the output on exit is this:

> chessx 
free(): invalid pointer
Aborted (core dumped)

Tomorrow I should be able to supply a proper gdb backtrace if you think it proper.

[Jens Nissen]

A backtrace would be great - obviously, there are two issues. By the way: don't activate SPEECH on Linux - this is known to be crashing - see QTBUG-90626.

[Luigi Baldoni]

A backtrace would be great -
obviously, there are two issues. By the way: don't activate SPEECH on
Linux - this is known to be crashing - see QTBUG-90626.

Oh, I didn't know that. Passing -DENABLE_TTS=OFF solved the problem, but perhaps that should be made default on linux.

Anyway, I attached the backtrace.