I did a bit of hacking with warnings.pm. What's throwing the module off is its use of the caller function.

Here is an illustration:

package MyAbc;

warnings::register;

sub foo
{
  warnings::warn "foo", if (warnings::enabled);
  bar;
}

sub bar
{
  warnings::warn "bar", if (warnings::enabled);
}

Warnings will work in foo because it is "top-level", but they do not work in bar because it's a function within a function.

That is, they don't work if I use warnings 'MyAbc', but they will work if I run Perl with the -w switch.

Correction ... if I run foo from a calling module, we don't see the warning from foo but we do see it from bar. However, when we run bar directly we don't see it.

Even stranger, a module that I'm working on has the opposite effect of my correction. This is strange indeed.

In reply to Re: (tye)Re: How do I get warnings to work properly? by rrwo
in thread 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.