That's interesting. The following code doesn't leak though: 
#!/usr/bin/perl
use strict;
use warnings;

bar();

sub bar {
    my $result = foo();
    if ( $result ) {
        goto &bar;
    }
    return;
}

my $i = 0;
sub foo {
    return $i++ < 1_000_000_000;
}

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Wouldn't this leak if the if-statement was creating a stack frame as you said?

In reply to Re^6: memory leak when using tail recursion? by juddhuck
in thread memory leak when using tail recursion? by juddhuck

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