Hello Monks,

after a very long time of debugging because of missing options in my application I found a really curious bug.

The two while loops are added just for debugging into the method: 
sub _split_options {
    my ($self, $opts) = @_;

    while (my ($k, $v) = each %$opts) {
        print "$k = $v\n";
    }

    while (my ($k, $v) = each %$opts) {
        print "$k = $v\n";
    }

    # ... another code
}

[download]
The first while-loop prints out 3 keys with 3 values. The seconds while-loop prints out 4 keys and 4 values. The loops runs one after another. The code is exaclty the same. I am totaly confused. I tried to reprodruce this bug in another code snippets but without success.

If I replace the first loop with foreach I don't have the problem and it prints out 4 keys and 4 values.

My Perl Version is 5.10.0 on a Debian Lenny.

Jonny

In reply to Found bug: while() by Anonymous Monk

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