Fix signal handler

[elfring]

trafficstars

The function "exit" does not belong to the list of async-signal-safe functions. I guess that a different program design will be needed for your function "ya_sighandler".

[Lindenk]

Can't exit() just be changed to _Exit() to conform to the spec or am I missing something?

[elfring]

The mentioned function replacement could work.

Would you like to consider other software design options?

• sigwaitinfo()
• Self-pipe trick
• Signal-safe locks