On Tue, Feb 28, 2023 at 11:54 PM John Moon <quic_johmoo@xxxxxxxxxxx> wrote: > > Currently, the script works with gcc. It generates output like this when > a backwards-incompatible change is made to a UAPI header: > > !!! ABI differences detected in include/uapi/linux/acct.h (compared to > file at HEAD^1) !!! > > [C] 'struct acct' changed: > type size changed from 512 to 544 (in bits) > 1 data member insertion: > '__u32 new_val', at offset 512 (in bits) at acct.h:71:1 > > 0/1 UAPI header file changes are backwards compatible > UAPI header ABI check failed > > However, we have not had success with clang. It seems clang is more > aggressive in optimizing dead code away (no matter which options we > pass). Therefore, no ABI differences are found. Hi John, Do you have the list of bugs you've filed upstream against clang wrt. information missing when using `-fno-eliminate-unused-debug-types`? https://github.com/llvm/llvm-project/issues is the issue tracker. Seeing a strong participant in both the Android and LLVM ecosystems supply scripts that lack clang support...raises eyebrows. -- Thanks, ~Nick Desaulniers
