perl -e 'use strict; my %foo = (Bar::Baz => "qux")'

##</code><code>##

Bareword "Bar::Baz" not allowed while "strict subs" in use at -e line 1.
Execution of -e aborted due to compilation errors.

##</code><code>##

use strict;
use Attribute::Handlers autotie => { __CALLER__::Attribute => __PACKAGE__ };