182c182
< if ((int)p1 == -1) { perror(buf1); exit(3); }
---
> if (p1 == (u_char *)MAP_FAILED) { perror(buf1); exit(3); }
186c186
< if ((int)p2 == -1) { perror(buf2); exit(3); }
---
> if (p2 == (u_char *)MAP_FAILED) { perror(buf2); exit(3); }
325c325
< if ((int)p1 == -1) { perror(buf2); exit(3); }
---
> if (p1 == (u_char *)MAP_FAILED) { perror(buf2); exit(3); }