I'm puzzled that hashes tied via dbmopen apparently don't like utf-8 encoded keys: 
    my $utf8key = "\x{05D0}";

    dbmopen(my %hash, "/tmp/mydb", 0666) || die "d'oh!";
    $hash{$utf8key} = "bar";
    dbmclose(%hash);

[download]
prints 
    Wide character in null operation at ./test.pl line 8.
As checked with Encode::is_utf8, the string in $utf8key has the utf8 flag on.

Is this a bug in the dbm implementation or am I just confused?

It happens with perl5.8.8 and perl5.9.3. Thanks for any help.

In reply to utf-8 keys in a tied hash cause warning by saintmike

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.