azu

nyan

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

int f();
int main();
void g();

int f(void)
{
    if(
        ((void*)main <= __builtin_return_address(0)) &&
        (__builtin_return_address(0) <= (void*)g))
        puts("first call f");
    if(
        ((uint64_t)main <= *(((uint64_t*)__builtin_frame_address(0)) + (49 * 4) + 1)) &&
        (*(((uint64_t*)__builtin_frame_address(0)) + (49 * 4) + 1) <= (uint64_t)g)
        )
    {
        return 101;
    }
    return 101 + f();
}

int main()
{
    printf("%d\n",f());
    return 0;
}

void g()
{
    puts("dummy");
}