remove the general use of sys_nerr

}

#endif   /* WIN32 && !__CYGWIN__ */

#ifndef WIN32

extern int sys_nerr;

#endif

/*

 * Our thread-safe and smart strerror() replacement.

 *

 * The 'err' argument passed in to this function MUST be a true errno number

 * as reported on this system. We do no range checking on the number before

 * we pass it to the "number-to-message" convertion function and there might

 * be systems that don't do proper range checking in there themselves.

 *

 * We don't do range checking (on systems other than Windows) since there is

 * no good reliable and portable way to do it.

 */

const char *Curl_strerror(struct connectdata *conn, int err)

{

  size_t max;

  curlassert(conn);

  curlassert(err >= 0);

  buf = conn->syserr_buf;

  max = sizeof(conn->syserr_buf)-1;

  *buf = '\0';

#if defined(WIN32) && !defined(__CYGWIN__)

  /* 'sys_nerr' is the maximum errno number, it is not widely portable */

  if (err >= 0 && err < sys_nerr) {

    if (!get_winsock_error (err, buf, max) &&

        !FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,

                        LANG_NEUTRAL, buf, max, NULL))

      snprintf(buf, max, "Unknown error %d (%#x)", err, err);

  }

#else /* not native Windows coming up */

  /* These should be atomic and hopefully thread-safe */

#ifdef HAVE_STRERROR_R

  /* There are two different APIs for strerror_r(). The POSIX and the GLIBC

     versions. */

#ifdef HAVE_POSIX_STRERROR_R

  strerror_r(err, buf, max); 

  /* this may set errno to ERANGE if insufficient storage was supplied via

       strerrbuf and buflen to contain the generated message string, or EINVAL

       if the value of errnum is not a valid error number.*/

     'strerrbuf' and 'buflen' to contain the generated message string, or

     EINVAL if the value of 'errnum' is not a valid error number.*/

#else

  {

    /* HAVE_GLIBC_STRERROR_R */

    char buffer[256];

    char *msg = strerror_r(err, buffer, sizeof(buffer));

    strncpy(buf, msg, max);

#endif

#else

    strncpy(buf, strerror(err), max);

#endif

    *(buf+max) = '\0';

  }

  else {

#if defined(WIN32) && !defined(__CYGWIN__)

    if (!get_winsock_error (err, buf, max) &&

        !FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,

                        LANG_NEUTRAL, buf, max, NULL))

#endif

     snprintf(buf, max, "Unknown error %d (%#x)", err, err);

  }

#endif /* end of HAVE_GLIBC_STRERROR_R */

#else /* HAVE_STRERROR_R */

  strncpy(buf, strerror(err), max);

#endif /* end of HAVE_STRERROR_R */

#endif /* end of ! Windows */

  buf[max] = '\0'; /* make sure the string is zero terminated */

  /* strip trailing '\r\n' or '\n'. */

  if ((p = strrchr(buf,'\n')) != NULL && (p - buf) >= 2)