use Thread;

sub a{ print "MAIN\n"; 1 };

$global::var = \&a;

print STDOUT "\n:Main1: ref of a()->".$global::var."\n";
print STDOUT "\n:Main2: ref of a()->:".$global::var."\n";

my $t1 = Thread->new(\&run, NULL);
my $t2 = Thread->new(\&run, NULL);


$t1->join;
$t2->join;

sub run
{
	print "THREAD\n";
	print STDOUT "\nThread: ref of a()->".$global::var."\n";
	&{$global::var};
}


print STDOUT "\nMain3: ref of a()->:".$global::var."\n";