I am trying to use the warnings pragma for my modules. In a simple module:

  package foo;

  use warnings::register;

  sub bar {
    if (warnings::enabled) {
      warnings::warn "this is a warning";
    }
  }

The above works properly if I say 'use warnings' or 'no warnings' in my calling code.

But in larger (object oriented) modules it does not work. Or rather, warnings::enabled always returns false. If in the module I enable warnings, it works but I cannot turn off the warnings in my calling code.

Is there a bug in warnings, or is there some overlooked and possibly poorly-documented feature of warnings that I'm missing out on?

Also: Is there a way to get Carp working properly with warnings? (From what I've read, not yet. See http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2000-11/msg01297.html)

In reply to How do I get warnings to work properly? by rrwo

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.