[fpc-devel] threads vs widestringmanager / crash

[Sven Barth]

Am 07.07.2018 um 15:04 schrieb Martin:
> So (guessing) the original issue may be due to the debugger. The 
> debugger interrupts the target early on. And that does create a thread 
> in the target.
> If such an external thread happens, would fcp execute the code in 
> question?

This is likely to be the cause, cause the EXEC_TLS_CALLBACK is executed 
by Windows for every thread that is started for an application. And if 
the debugger triggers the start of a thread...

>
> Could/Should there be a nil check at the location of the crash?

The RTL assumes that it does not have to deal with threads during the 
initialization of the System unit. So even if the symptom of the crash 
is fixed in that location it isn't said that something else might crash 
or that in the future code might be added that crashes...

Regards,
Sven