Could it be that the string variable just has to be initialized to an empty string?
use strict;
use warnings;

use Devel::Peek;

# initialized here
my $sOut = "";

close(STDERR);
open(STDERR, ">", \$sOut) or die "Can't redirect STDERR to \\\$sOut";
my $s=1;

Devel::Peek::Dump $s;
Devel::Peek::Dump $s;
print "<<$sOut>>\n";

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In reply to Re^2: Devel::Peek output to a string? by repellent
in thread Devel::Peek output to a string? by perl5ever

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