#include <stdio.h>

typedef struct T1
{
	int id; 
} T1;

typedef struct T2
{
	int id; 
} T2;

void f(T1 *ptr) {
	printf("f called\n");
}

int main(void) {
	T2 obj; 
	T2 *ptr = &obj; 
	f(ptr);
	return 0;
}