perl adds a defined to the while so you get something like this: 
    $ perl -MO=Deparse -e 'while($file = readdir(D)) { print $file; }'

    while (defined($file = readdir D)) {
        print $file;
    }
    -e syntax OK

[download]

This is explained in more detail at A most obscure bug.

--
John.

In reply to Re: readdir and while - magic? by jmcnamara
in thread readdir and while - magic? by bjelli

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