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Minor nit-pick that probably doesn't answer your immediate problem: "fork()" does not return a negative number; failure is indicated by returning undef. So your initial "if" condition should be:
if ( ! defined( $g_pid ))
Apart from that, you seem to be using variables with global scope for flow-control, and you didn't show how/whether these were initialized ($g_stop, $g_timeout). So it's hard to guess whether it's a problem that $g_stop is never assigned a value within the "while(1)" loop. Also, you didn't include whatever code you have (if any) that actually handles the event generated by "alarm()". Could that be relevant?

In reply to Re^3: Redirecting stdout/stderr to pipe by graff
in thread Redirecting stdout/stderr to pipe by 0xbeef

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