https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78829
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #3) > https://gcc.gnu.org/onlinedocs/gcc/Alignment.html should discuss the > relationship between GCC's __alignof__ and C11's _Alignof. Are they > identical? Should _Alignof be preferred when using C11? It could also > mention _Alignas, and the macros (keywords in C++11 and later) alignof and > alignas. This seems like a separate issue?