ok1(container_of(intp, struct foo, a) == &foo);
ok1(container_of(charp, struct foo, b) == &foo);
ok1(container_of_var(intp, &foo, a) == &foo);
ok1(container_of_var(charp, &foo, b) == &foo);
ok1(container_of(intp, struct foo, a) == &foo);
ok1(container_of(charp, struct foo, b) == &foo);
ok1(container_of_var(intp, &foo, a) == &foo);
ok1(container_of_var(charp, &foo, b) == &foo);
+
+ ok1(container_off(struct foo, a) == 0);
+ ok1(container_off(struct foo, b) == offsetof(struct foo, b));
+ ok1(container_off_var(&foo, a) == 0);
+ ok1(container_off_var(&foo, b) == offsetof(struct foo, b));