6 array elements.</li>
<li>Bitfield initializations.</li>
<li>Pointer differences for element sizes that are not a power of
two.</li>
<li>Calls to C&nbsp;functions with aggregates passed or returned by
value.</li>
<li>Calls to ctype metamethods which are not plain functions.</li>
<li>ctype <tt>__newindex</tt> tables and non-string lookups in ctype
<tt>__index</tt> tables.</li>
<li><tt>tostring()</tt> for cdata types.</li>
<li>Calls to <tt>ffi.cdef()</tt>, <tt>ffi.load()</tt> and
<tt>ffi.metatype()</tt>.</li