While it is true that much of the fallout of this change related to tests making unwarranted assumptions about hash order, but at least a few real*bugs were found too.

For instance the changes which added the variable and subscript names to uninitialized warnings in an earlier Perl would fail if the key involved was in the last bucket of the hashes bucket array. Prior to hash randomization the tests for this feature would not test this case. With hash randomization they would regularly fail. The bug was fixed, and you now have better uninitialized warnings in 5.18.

IIRC, DBI and CGI were the same story. Real bugs were found and fixed because of hash order randomization. So lets keep a sense of proportion here. Hash randomization makes it easy to identify a class of bugs that is extremely difficult to find any other way.


In reply to Re^5: 5.18.0 is available NOW! by Anonymous Monk
in thread 5.18.0 is available NOW! by Tux

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.