feature f1 {
    sub c_t by c t;
    sub f_i by f i;
    sub f_f_i by f f i;
} f1;


# Even if it has exactly the same content as feature f1,
# the lookup should not be shared.
feature f2 {
    sub c_t by c t;
    sub f_i by f i;
    sub f_f_i by f f i;
} f2;