$foo = *bar; \$foo =~ /^[A-G]/ and print "Ok!\n";

##</code><code>##

*foo = *1; !eval { ($foo) = $foo } and print "Ok\n";

##</code><code>##

*foo = *_; sub { \$foo[0] == \$foo[1] && !$[ and print "Ok\n"; } -> ($x, $x);

##</code><code>##

sub{*foo=\@_}->($x,$x); \$foo[0] == \$foo[1] && !$[ and print "Ok!\n";

##</code><code>##

*foo = \substr(1,0,1); \$foo =~ /^[H-N]/ and print "Ok!\n";

##</code><code>##

BEGIN{$^H{"qr"}=sub{""};$^H|=3<<16}; \$foo =~ /^\0/ and print "Ok!\n";

##</code><code>##

$[ = 2; *| = *[;  ($| = 1) == 2 and print "Ok!\n"; warn 0+$|;

##</code><code>##

perl -wde 'sub DB::DB { ++$foo==2 and die "break out the eval"; }; !eval { [ @foo ] } and print "Ok!\n"; '

##</code><code>##

#!perl -d
sub DB::DB { ++$foo==2 and die "break out the eval"; }; !eval { [ @foo ] } and print "Ok!\n";