Just demonstrating c behavior that allows a non-returning function to still accidentally return the right value.

gistfile1.c

#include <stdlib.h>
#include <stdio.h>
int *getOne() {

    register int eax asm("eax");

    printf("eax is %x before malloc\n", eax);

    int *one = malloc(sizeof(int));

    printf("eax is %x after malloc\n", eax);

    *one = 1;
}

int main() {
    register int eax asm("eax");
    printf("eax is %x before call\n", eax);

    int *test = getOne();

    printf("eax is %x after call\n", eax);
    printf("The address of test is %x\n", test);

    printf("%d\n", *test);
    return 0;
}