#include <stdio.h>
#include <stdlib.h>

struct Thing {
   int x;
};

typedef struct Thing Thing;

void broccoli(Thing *t) {
   t->x = 2;
   Thing *u = malloc(sizeof(Thing));
   u->x = 3;
   t = u;
}

int main() {
   Thing b;
   b.x = 1;
   printf("%i\n", b.x);
   broccoli(&b);
   printf("%i\n", b.x);
}