/**
 * :author: Dan Buch (daniel.buch@gmail.com)
 */

#include <stdio.h>

void duff(register char *to, register char *from, register int count)
{
    register int n;

    int remainder = count % 8;
    if (remainder == 0) {
        n = (count + 7) / 8;
        do {
            *to++ = *from++;
        } while (--n > 0);
    } else if (remainder <= 7 && remainder > 0) {
        int i;
        int c;
        for (i = 0; (c = from[i] && c != EOF); i++) {
            to[i] = c;
        }
    }
}

int main()
{
    char * to = "dogs cats babies";
    char * from = "monkey hat pants";
    int i = 11;
    printf("to = %s\n", to);
    printf("from = %s\n", from);
    /* And here comes the segfault... */
    duff(to, from, i);
    printf("to = %s\n", to);
    printf("from = %s\n", from);
}

/* vim:filetype=c:fileencoding=utf-8
 */