proxybug

our $f_count = 0;

# If you take away the type of Int $f_count returns 1 and bug goes away

class C {
    has Int $.attr is rw;

    method attr returns Int is rw {
        return Proxy.new(
            FETCH => -> $self {$f_count++; 42 },
            STORE => -> $self, Int $new {},
        );
    }
}

my C $c .= new;
my $a = $c.attr;
say 'count should be 1 but is: ', $f_count;