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Re: Re: XML::Simple conflicts with $SIG{__DIE__}

by Matts (Deacon)
on Apr 18, 2002 at 13:43 UTC ( #160198=note: print w/ replies, xml ) Need Help??


in reply to Re: XML::Simple conflicts with $SIG{__DIE__}
in thread XML::Simple conflicts with $SIG{__DIE__}

Or perhaps more properly, any $SIG{__DIE__} handler you install should only ever be used to augment the exception and re-throw it. Anything else completely breaks perl's exception handling mechanism. Here's a working (and useful) example of a good $SIG{__DIE__} handler:

local $SIG{__DIE__} = sub { my $err = shift; if (ref($err)) { die $err; } else { throw Exception::Unknown (error => $err); } };
Implementation of the Exception::Unknown class is left as an exercise. Also note the use of local - so that if we're running under something like mod_perl we don't screw up everyone elses handler that might not want this effect.


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