int yoba() {
    int a;
    int &b = a;
    int *c = &a;
    return 0;
}

int main() {
    yoba();
    return 0;
}

/*
(gdb) p &a
$1 = (int *) 0x3ffffffcb44
(gdb) p &b
$2 = (int *) 0x3ffffffcb44
(gdb) p sizeof(a)
$3 = 4
(gdb) p sizeof(b)
$4 = 4
(gdb) p sizeof(c)
$5 = 8
(gdb) p c
$6 = (int *) 0x3ffffffcb44
*/