By replacing your instruction with system("./prog2.pl") I get a return code of 5 both with and without SIGCHLD ignored.

But what did you get before you made that replacement? I'm guessing -1 in both cases and that your platform just isn't one of the ones that exhibits this.

By the way, why should ignoring SIGCHLD be recommended when using system? Never heard that...

I don't think that such a "recommendation" is suggested by the original post. I doubt he was ignoring SIGCHLD because he was using system(); I'd bet he just ran into this in a program that happened to do both. So, the question is: must we recommend never ignoring SIGCHLD when using system()?

-sauoq
"My two cents aren't worth a dime.";

In reply to Re: Re: why does ignoring sigCHLD corrupt return value from system()? by sauoq
in thread why does ignoring sigCHLD corrupt return value from system()? by fiberhalo

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