use strict;
use warnings;
#3
sub foo () {
    print("F1");
    print("F2");
    print("F3");
}
#9

##</code><code>##

#line 8 "foo.pl"
sub foo () {
    use warnings;
    use strict 'refs';
#line 5 "foo.pl"
    print 'F1';
#line 6 "foo.pl"
    print 'F2';
#line 7 "foo.pl"
    print 'F3';
}
foo.pl syntax OK