Have you tried this? 
#!/usr/bin/perl
use strict;
    sub foo;
    sub foo {
        return unless $_ [0];
        my $x if undef;
        print ++ $x, " ";
        foo $_ [0] - 1;
    }

    foo 29; print "\n";

[download]
It prints:

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Hum...

In reply to Re^2: Unusual Closure Behaviour by Anonymous Monk
in thread Unusual Closure Behaviour by tachyon

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