Very cool. Thank you!

I did notice that the docs for Fatal are somewhat off when they say that overridable built-ins can be modified through this module. In fact Fatal can handle only those overridable built-ins foo such that prototype('foo') is defined; there are overridable built-ins for which this is not the case, and therefore will cause Fatal to fail at compile time.

For instance: 

use strict;
use Fatal 'chop';  # My name's Bond, James Bond.

chop 'Ow!';
__END__
Cannot make a non-overridable builtin fatal at /opt/perl-5.8.4/lib/5.8
+.4/Fatal.pm line 108.
BEGIN failed--compilation aborted at testfatal.pl line 2.

[download]
but 
use strict;
use subs 'chop';
sub chop {
  print "hello from chop\n";
}

chop 'Ow!';
__END__
hello from chop

[download]

Here's the relevant part of Fatal.pm 

        $proto = eval { prototype "CORE::$name" };
        # ...
        die "Cannot make a non-overridable builtin fatal"
          if not defined $proto;

[download]

the lowliest monk

In reply to Re^2: wishlist: die-on-failure for built-ins by tlm
in thread wishlist: die-on-failure for built-ins by tlm

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