--- rewind.c.bsdnew 2009-11-11 13:33:15.000000000 -0800 +++ rewind.c 2009-11-11 13:33:15.000000000 -0800 @@ -54,8 +54,8 @@ rewind(FILE *fp) FLOCKFILE(fp); if (_fseeko(fp, (off_t)0, SEEK_SET, 1) == 0) { - clearerr_unlocked(fp); errno = serrno; } + clearerr_unlocked(fp); /* POSIX: clear stdio error regardless */ FUNLOCKFILE(fp); }