~mcf/cproc

e64d53164e373a695bfe4b5cd8eb052a0071c42d — Michael Forney a month ago 8f9714c
decl: Relax restrictions for 0-length array member

Zero-length array members are quite common in linux UAPI headers,
where they don't follow the restrictions of flexible array members.
Since they are non-standard, relax the error checking for them,
rather than considering them the same as a flexible array member.
1 files changed, 5 insertions(+), 6 deletions(-)

M decl.c
M decl.c => decl.c +5 -6
@@ 559,10 559,8 @@ declaratortypes(struct scope *s, struct list *result, char **name, bool allowabs
				;
			if (tok.kind == TMUL)
				error(&tok.loc, "VLAs are not yet supported");
			if (tok.kind == TRBRACK) {
				i = 0;
				next();
			} else {
			t = mkarraytype(NULL, tq, 0);
			if (tok.kind != TRBRACK) {
				e = eval(assignexpr(s), EVALARITH);
				if (e->kind != EXPRCONST || !(e->type->prop & PROPINT))
					error(&tok.loc, "VLAs are not yet supported");


@@ 570,9 568,10 @@ declaratortypes(struct scope *s, struct list *result, char **name, bool allowabs
				if (e->type->basic.issigned && i > INT64_MAX)
					error(&tok.loc, "array length must be non-negative");
				delexpr(e);
				expect(TRBRACK, "after array length");
				t->array.length = i;
				t->incomplete = false;
			}
			t = mkarraytype(NULL, tq, i);
			expect(TRBRACK, "after array length");
			listinsert(ptr->prev, &t->link);
			break;
		default: