The latest 5.8.1 snapshot has in strict.pm: 
my %bitmask = (
refs => 0x00000002,
subs => 0x00000200,
vars => 0x00000400
);

sub bits {
    my $bits = 0;
    my @wrong;
    foreach my $s (@_) {
        push @wrong, $s unless exists $bitmask{$s};
        $bits |= $bitmask{$s} || 0;
    }
    if (@wrong) {
        require Carp;
        Carp::croak("Unknown 'strict' tag(s) '@wrong'");
    }
    $bits;
}

[download]

which clearly shows that it is just inside the "strict" module to me.

I believe it was patch 17869. From Changes: 

[ 17869]
Subject: [perl #17061] no strict 'garbage'
From: Elizabeth Mattijsen (via RT) <perlbug@perl.org>
Date: 6 Sep 2002 19:31:02 -0000
Message-Id: <rt-17061-36808.6.19994322284541@bugs6.perl.org>
Date: Sat, 07 Sep 2002 13:40:22 +0200
Message-Id: <4.2.0.58.20020907133846.02476d40@mickey.dijkmat.nl>

[download]

Liz

In reply to Re: Re: no strict with 'use strict qw(@ISA)' by liz
in thread apache2 conflicts with strict declaration by helick

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