https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106943
--- Comment #14 from Alexander Monakov <amonakov at gcc dot gnu.org> --- (In reply to Jan Hubicka from comment #13) > Indeed it is quite long time problem with clang not building with lifetime > DSE and strict aliasing. I wonder why this is not fixed on clang side? Because the problems were not communicated? I knew that Firefox needed -flifetime-dse=1, but it's the first time I hear that any such problems in Clang/LLVM were identified. I could not find any workaround for lifetime-dse in SUSE spec file for llvm16. Are you saying it was known and worked around somehow? Or it is not manifesting because LLVM is built without LTO?