SIZFUNVOIDTYP

Message        <Context> "<type>" has function or void type and may
               not appear in this context.  The compiler will treat
               the type as if it were char.

Description    A function or void type cannot be used as the
               argument of the sizeof operator or the
               __builtin_alignof builtin.  For compatibility with
               some other compilers, an output file is still
               created.  The result produced will be the same as if
               a char type was passed.  This may or may not be
               compatible with other compilers that accept this
               syntax.

User Action    Pass a valid type to the operator or builtin.