I have encountered a problem with using the each() function on a hash dereference of an overloaded object: 
use strict;
use warnings;

package Results; {
    sub new
    {
        return (bless(\do{ my $scalar; }, __PACKAGE__));
    }

    use overload ( '%{}' => \&as_hash );

    sub as_hash
    {
        return ({ 'key1' => 'value1',
                  'key2' => 'value2' });
    }
}

package main;

my $obj = Results->new();

while (my ($key, $val) = each(%{$obj})) {
    print("$key => $val\n");
}

[download]
Running this produces an infinite loop that continually outputs only one value from the hash.

Is this a bug?

Remember: There's always one more bug.

In reply to overload + each() bug? by jdhedden

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.