You can register a die handler in $SIG{__DIE__}. This example code probably won't work when you have multiple instances of Logger, and it will clobber any die handler the user has set up. But it's a good start: 
package Logger;

sub new {
    my $self = ...
    ...

    $SIG{__DIE__} = sub {
        my $msg = shift;
        $self->add($msg);
        die $msg;
    };

    return $self;
}

[download]
A more robust solution is to maintain a list of active Logger instances within the package, and set up just one die handler that writes to all of them. 
package Logger;
our @instances;

sub new {
    my $self = ...;
    ...
    
    push @instances, $self;
    return $self;
}

$SIG{__DIE__} = sub {
    my $msg = shift;
    $_->add($msg) for @instances;
}

[download]
You may also want to take care to not clobber existing die handlers, but I don't know a whole lot about that. I'll leave it to the pros ;)

blokhead

In reply to Re: Capturing Text from a die command by blokhead
in thread Capturing Text from a die command by or10n

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