ctor_size</tt>, <tt>cdecl</tt>, <tt>fastcall</tt>,
<tt>stdcall</tt>, <tt>thiscall</tt>.</li>

<li>The GCC <tt>__extension__</tt> keyword and the GCC
<tt>__alignof__</tt> operator.</li>

<li>GCC <tt>__asm__("symname")</tt> symbol name redirection for
function declarations.</li>

<li>MSVC keywords for fixed-length types: <tt>__int8</tt>,
<tt>__int16</tt>, <tt>__int32</tt> and <tt>__int64</tt>.</li>

<li>MSVC <tt>__cdecl</tt>, <tt>__fastcall</tt>, <tt>__stdcall</tt>,
<tt>__thiscall</tt>, <tt>__ptr32</tt>, <tt>