char b;
};
-int main(int argc, char *argv[])
+int main(void)
{
struct foo foo = { .a = 1, .b = 2 };
int *intp = &foo.a;
char *charp = &foo.b;
- plan_tests(8);
+ plan_tests(12);
ok1(container_of(intp, struct foo, a) == &foo);
ok1(container_of(charp, struct foo, b) == &foo);
+ ok1(container_of_or_null(intp, struct foo, a) == &foo);
+ ok1(container_of_or_null(charp, struct foo, b) == &foo);
+ ok1(container_of_or_null((int *)NULL, struct foo, a) == NULL);
+ ok1(container_of_or_null((char *)NULL, struct foo, b) == NULL);
ok1(container_of_var(intp, &foo, a) == &foo);
ok1(container_of_var(charp, &foo, b) == &foo);