rapidsna wrote:
> @kees, @nickdesaulniers, @rapidsna, and @apple-fcloutier Should this feature
> support a `__bdos` to an address inside the FAM?
>
> ```
> #include <stdio.h>
> #include <stdlib.h>
>
> struct flex {
> double dummy;
> char count;
> char fam[] __attribute__((counted_by(count)));
> };
>
> int main() {
> struct flex *f = malloc(sizeof(struct flex) + 42 * sizeof(char));
>
> f->count = 42;
> printf("__bdos(&f->fam[3], 1) == %lu\n",
> __builtin_dynamic_object_size(&f->fam[3], 1));
> return 0;
> }
> ```
Supporting it similar to how const-sized arrays are currently handled makes
sense to me.
https://github.com/llvm/llvm-project/pull/70606
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