> I would be in favor of disabling __bdos on a whole struct pointer if > it will match the functionality between the compilers. I don't think > Qing has that on her plate at the moment, but when / if she revisits > that we can discuss exactly how to perform the calculations then.
That's a good approach from my perspective. To get this done we would: Now: 1. Disable the __counted_by attribute calculation in clang for whole struct __bdos cases like in [1] and get this into the next clang point release (19.1.3) 2. In the kernel, disable __counted_by for clang versions < 19.1.3. Also backport that into the stable kernels In the future: 3. Try and figure out what the correct counted_by calculation for whole structs should be in conjunction with gcc and clang. Either provide an option in clang and gcc to follow the kernels expectations or change struct_size in the kernel to match gcc's and clang's future behavior. [1] https://github.com/llvm/llvm-project/pull/112636 Best Regards Jan
