Yes, SIGPIPE doesn't just occur asynchronously; the process that receives it usually has to try to use the broken pipe before getting it. (Exceptions are sockets with SO_KEEPALIVE set and explicit kills by other processes.)

Think of it as libc's way of generating a fatal error.

In reply to Re: Re: How to end a process started with open "cmd |" before it has output by ysth
in thread How to end a process started with open "cmd |" before it has output by Crackers2

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