Hi everyone. It's my first post here so hope I get it right :)
Short background to the problem:
I'm using Net::Telnet module for a program and want to log the traffic on the telnetport. Telnet-module has a function for writing IO-traffic to a filehandle.
I like to view that traffic as the program runs and I've done that with the modules IO::String or IO::Scalar (in IO::Stringy). IO::String emulate file interface for in-core strings. Telnet-traffic is saved to a variable $var so I can process it. Now to the problem.
Problem:
I'm using threads for updating $var (the traffic) to screen as the program runs. But the threads-module don't go along with IO::String or IO::Stringy, but I read that it should. I get the compile message:
Attempt to free unreferenced scalar: SV 0x1c335fc during global destruction.
If you don't know any solution to what causes that warning, is there another way to do what I described above?
I think using threads is the way because I dont want to stop telnet-command-execution each time I update screen with new Telnet-traffic messages. Anyway, I have scaled down the code that gives the error to almost nothing.
Here it goes. (runs on Active State Perl 5.8.3) 
#!/usr/bin/perl -w
use strict;
use threads;
use IO::String;

my $var; # This variable is later connected to IO-stream.
my $io = IO::String->new($var); # connect $var to IO-stream.
my $th=threads->new(\&Update); # start thread
$th->join(); # collect thread
sub Update{}; #Updating screen with $var.

# $io: Used as a filehandle for logging in Net::Telnet module. 
# $var stores all that prints to $io.

[download]
Hope this was not to long to read. I appreciate all the help or guidelines I can get, thanks!

In reply to Problem with using threads with modules. by tele2mag

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