test.c

#include <stdio.h>

int *p;

void foo(int *n) {
    p = ((void **)n)[0];
    ((int (*)(void))((void**)n)[1])();
}

void bar() {
    printf("%d\n", *p);
}

void baz() {
    int n = 4;
    foo((void *[2]){&n, &bar});
}

void fuck_stack() {
    int g = 0;
    int h = 0;
    int i = 0;
    int p = 0;
    int n = 5;
}

int main(void) {
    baz();
    fuck_stack();

    bar();
   
    return 2;
}