id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,lang,patch,platform
1481,P6metaclass.register does not catch second registration of PMC Class,Austin_Hastings,,"Registering a PMC class works. Registering the same class a second time does not produce a diagnostic - although attempting to register a non-PMC class twice does.

Also, the second register produces some horrible results.

{{{
main();

sub main() {
	pir::load_bytecode('dumper.pbc');
	pir::load_bytecode('P6object.pbc');
	my $nsp;
	
	
	$nsp := Q:PIR {
		%r = get_hll_namespace ['Key']
	};
	_dumper($nsp);
	
	P6metaclass.register('Key');

	$nsp := Q:PIR {
		%r = get_hll_namespace ['Key']
	};
	_dumper($nsp);

	
	P6metaclass.register('Key');

	$nsp := Q:PIR {
		%r = get_hll_namespace ['Key']
	};
	_dumper($nsp);
}
}}}",bug,new,normal,,none,2.1.0,medium,,,,,,