panic: magic_killbackrefs

(during global destruction).

I was using weak reference support (whoever implemented this deserves an
award for Most Useful New Feature -- seriously) to implement an object
cache.

My code works along the lines of ...

use WeakRef;
my %cache;
my @cache;

{ ## from 'sub new'
	my $obj = bless {x=>"y"}, "foo";
	$cache{x} = $obj;
	weaken($cache{x});
	push(@cache,$obj); shift @cache if @cache > 10;
}

... though this test case doesn't exhibit the problem.

One workaround is to clear either %cache or @cache (or both) in an END
block, but IMHO that should not be necessary.

-- 
Matthias Urlichs  |  noris network GmbH   |   smurf@noris.de  |  ICQ: 20193661
The quote was selected randomly. Really.    |      http://www.noris.de/~smurf/
-- 
Never put off until tomorrow what you can do today.  There might be a
law against it by that time.

• panic: magic_killbackrefs by Unknown Sender