On 3. Oct 2024, at 17:22, Jan Hendrik Farr <[email protected]> wrote: > On 03 17:02:07, Thorsten Blum wrote: >> On 3. Oct 2024, at 15:12, Jan Hendrik Farr <[email protected]> wrote: >>> On 03 15:07:52, Thorsten Blum wrote: >>>> On 3. Oct 2024, at 13:33, Jan Hendrik Farr <[email protected]> wrote: >>>>>> [...] >>>>> >>>>> This issue is now fixed on the llvm main branch: >>>>> https://github.com/llvm/llvm-project/commit/882457a2eedbe6d53161b2f78fcf769fc9a93e8a >>>> >>>> Thanks! >>>> >>>> Do you know if it also fixes the different sizes here: >>>> https://godbolt.org/z/vvK9PE1Yq >>> >>> Unfortunately this still prints 36. >> >> I just realized that the counted_by attribute itself causes the 4 bytes >> difference. When you remove the attribute, the sizes are equal again. > > But we want these attributes to be in the kernel, so that > bounds-checking can be done in more scenarios, right?
Yes > This changes clang to print 40, right? gcc prints 40 in the example > whether the attribute is there or not. Yes, clang prints 36 with and 40 without the attribute; gcc always 40. >>>> I ran out of disk space when compiling llvm :0 >>>> >>>>> So presumably this will go into 19.1.2, not sure what this means for >>>>> distros that ship clang 18. Will they have to be notified to backport >>>>> this? >>>>> >>>>> Best Regards >>>>> Jan
