https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127824
--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- (In reply to Manuel López-Ibáñez from comment #3) > Sorry, I thought I had tried -ffast-math but it seems I didn't. > > Clang has a new builtin to help in these cases: > https://clang.llvm.org/docs/LanguageExtensions.html#builtin-assume- > dereferenceable but it doesn't seem to make any difference here.
