- if (len < buflen)
- {
- /* Although POSIX allows memcpy() to corrupt errno, we don't
- know of any implementation where this is a real problem. */
- memcpy (buf, msg, len + 1);
- ret = 0;
- }
- else
- {
- memcpy (buf, msg, buflen - 1);
- buf[buflen - 1] = '\0';
- ret = ERANGE;
- }
- return ret;
+ /* Although POSIX lets memmove corrupt errno, we don't
+ know of any implementation where this is a real problem. */
+ memmove (buf, msg, moved);
+ buf[moved] = '\0';
+ return len < buflen ? 0 : ERANGE;