title: unknown type name size_t
body: <p>I use <code>/usr/include/bits/libio.h</code> file in a SDK program as a external location file. I get the error <code>unknown type name size_t</code> in this file (and a lot of errors derived from this). This file includes the <code>stddef.h</code>, so I don't know if something else is needed or why this error could be appearing. Coud someone help me with this issue?</p>
  <p>Thank you!</p>