Adjustments for signal handling

[Markus Elfring]

Hello,

I pointed out that a few signal handlers depend on undefined behaviour because wrong functions were called in their implementations.
https://bugs.kde.org/buglist.cgi?short_desc=Fix+signal+handler+implementation&short_desc_type=allwordssubstr&emailreporter1=1&emailtype1=substring&email1=Markus.Elfring&order=Bug+Number

Which ways will be accepted to make them really async-signal-safe?

Regards,
Markus

 
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