I can't reproduce this with just the code you provide: 
#!perl
$rc = syswrite $socket, pack("N",$self->{'length'}+length($SP_MAGIC)),
+ 4; 
print "Ok";

[download]
prints: "Ok"

I'm not disregarding the possibility of some bug in perl, but it's likely that the bug originates somewhere else. First up, what's in $self->{length}, $socket and $SP_MAGIC?

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: perl dying without a trace by Joost
in thread perl dying without a trace by Crackers2

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