https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104480
Marc Mutz <marc.mutz at hotmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #6 from Marc Mutz <marc.mutz at hotmail dot com> --- Thanks, that makes sense. It's a data race if it's not synchronized. And if I write to only one of the members, then GCC uses movw like everyone else: https://gcc.godbolt.org/z/9rsK5osaM So, GCC _is_ the clever kid! Sorry for the noise, then.