kern_descrip.c: only allow complex expression in Static_assert() for clang

gcc cannot compute the assert expression, which is formally not required
by a C standard.

Reported and reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation

This commit is contained in:

Konstantin Belousov

2025-07-11 21:57:32 +03:00

parent f5dba67334

commit fb84b9f400

1 changed files with 2 additions and 0 deletions

									
										sys/kern/kern_descrip.c
									
		+2
		
												View File
												
				@@ -557,8 +557,10 @@ open_to_fde_flags(int open_flags, bool sticky_orb)

						{ .f = O_CLOFORK,		.t = UF_FOCLOSE },

						{ .f = O_RESOLVE_BENEATH,	.t = UF_RESOLVE_BENEATH },

					};

				#ifdef __clang__

					_Static_assert(open_to_fde_flags_s[nitems(open_to_fde_flags_s) - 1].f ==

					    O_RESOLVE_BENEATH, "O_RESOLVE_BENEATH must be last, for sticky_orb");

				#endif

					return (flags_trans(open_to_fde_flags_s, nitems(open_to_fde_flags_s) -

					    (sticky_orb ? 0 : 1), open_flags));