https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108700
--- Comment #3 from Andreas Schwab <sch...@linux-m68k.org> ---
The grammar doesn't tell everything, though currently only storage-class
specifiers are expected to occur at the beginning.
>From c-parser.cc:c_parser_declspecs:
/* TODO: Distinguish between function specifiers (inline, noreturn)
and storage class specifiers, either here or in
declspecs_add_scspec. */
