Konrad Rosenbaum wrote:

> You do know what a thread is - right? ;-)

Yeah, my momma taught me long ago ;)

> Sorry, I'm too lazy/busy to read the source right now to make sure that no
> signal handlers are used here.

No problem, it was just curiosity.

> Apart from this I'd suspect you will still get the SEGV if you do not block
> - even if the frequency changes. This points to you using some kind of
> pointer that is not properly controlled (e.g. sending a signal to a QFSW
> that is already deleted).

I think it was false alarm. I used a lambda expression as slot and must have 
misunderstood why the other lambdas in the same function can use '[&]' without 
ending up with invalid references in the body. I only need the watcher 
instance, 
so I'm just passing the reference to it explicitly. No more crashing and less 
ambiguous anyway :)

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