https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68271
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
DARWIN_REGISTER_TARGET_PRAGMAS registers 5.
If I count well on Linux and yesterday's trunk, for -fopenmp -fopenacc
-fcilkplus I see 10 OpenACC, 25 OpenMP, 2 Cilk+ and 22 other deferred pragmas
being registered, if you add 5 to that it is 64.
The comment in c-family is clearly outdated, the C parser uses 8 bits for
pragma_kind.
But, looking at parser.h, I see
/* The kind of token. */
ENUM_BITFIELD (cpp_ttype) type : 8;
/* If this token is a keyword, this value indicates which keyword.
Otherwise, this value is RID_MAX. */
ENUM_BITFIELD (rid) keyword : 8;
/* Token flags. */
unsigned char flags;
/* Identifier for the pragma. */
ENUM_BITFIELD (pragma_kind) pragma_kind : 6;
/* True if this token is from a context where it is implicitly extern "C" */
BOOL_BITFIELD implicit_extern_c : 1;
/* True if an error has already been reported for this token, such as a
CPP_NAME token that is not a keyword (i.e., for which KEYWORD is
RID_MAX) iff this name was looked up and found to be ambiguous. */
BOOL_BITFIELD error_reported : 1;
/* True for a token that has been purged. If a token is purged,
it is no longer a valid token and it should be considered
deleted. */
BOOL_BITFIELD purged_p : 1;
which if I count well is already 33 bits anyway, followed by 32-bit integer and
pointer, therefore on 64-bit hosts there are 63 bits of padding and on 32-bit
hosts 31 bits of padding.
