Hi everyone! I've got exception handling subsystem which converts dies to exceptions with stack trace using Exception::Class-like lib. 

my $base_class = '...'; # base class for exceptions
my $error_class = '...'; # my error class

sub rethrow(;$) {
    my $e = @_ ? $_[0] : $@;

    die $e
        if blessed( $e ) && $e->isa( $base_class );

    die $error_class->new( $e );
}

sub try(&) {
    my $code = $_[0];

    eval {
        local $SIG{__DIE__} = \&rethrow;
        &$code();
    };

    $@;
}

[download]
And usage is: 

my $e = try {
   # some code, potentially with errors
};

[download]
Exception objects supports stringification. For most cases it works fine, but there is one case which breaks it. If I had module which dies duering loading and i'll try to require it with my try fucntion, $SIG{__DIE__} handler will be called twice. And second time it will be called with stringified exception from first time! So I lose call stack collected in first call and error location is lost. Is there any way to prevent such stringification?

In reply to How to prevent exception stringification after error in require/use? by vokbuz

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.