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Re: What magic is this?

by RMGir (Prior)
on Oct 26, 2006 at 12:09 UTC ( #580740=note: print w/replies, xml ) Need Help??

in reply to What magic is this?

No. But it's very interesting!

What happens if you put

use Carp; # or Coy, if you want humour
in your first script (the one without the $SIG{__WARN__} and $SIG{__DIE__} settings)?

I'm curious to see if those modules (which must set those signals themselves) also trigger the misbehaviour.

Also, if you look at line 451 of, does it really try to use a symbolic ref?


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Re^2: What magic is this?
by Jonathan (Curate) on Oct 26, 2006 at 12:38 UTC
    You have an interesting take on the word 'interesting' :-) has use Carp in it, when I added it to my first script it made no difference. It still ran without complaining.

    Line 451...

    if (defined $arg) { if (ref($arg) and UNIVERSAL::isa($arg, 'IO::Handler')) { $ioref = $arg; } else { eval { --> $ioref = *{$arg}{IO}; }; undef $@; } }
    I've tried eval'ing the call in my code but the error message still gets through. As its stands I'm going to have to amend my log_die sub-routine to ignore messages with Expat in them (which is horrible).
      That code block in my (version 2.34) looks like
      if (defined $arg) { if (ref($arg) and UNIVERSAL::isa($arg, 'IO::Handle')) { $ioref = $arg; } elsif (tied($arg)) { my $class = ref($arg); no strict 'refs'; $ioref = $arg if defined &{"${class}::TIEHANDLE"}; } else { require IO::Handle; eval { no strict 'refs'; $ioref = *{$arg}{IO} if defined *{$arg}; }; undef $@; } }

      but to me it looks equally scary. undef $@ after eval? wtf?

      At least, there's no strict 'refs'; inside the eval (but isn't it another wtf?)


      _($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                                    /\_¯/(q    /
      ----------------------------  \__(m.====·.(_("always off the crowd"))."·
      ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

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