https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113788
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Yes, seems that currently we only check that it's the first specifier:
/* Special case for "this" specifier, indicating a parm is an xobj parm.
The "this" specifier must be the first specifier in the declaration,
after any attributes. */
if (token->keyword == RID_THIS)
{
cp_lexer_consume_token (parser->lexer);
if (token != first_specifier)
but I guess we should also check we're processing a parameter-declaration.
