https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94403
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 48147 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48147&action=edit gcc10-pr94403.patch Untested fix for the std::byte part. Not a regression, so will have to wait for GCC11. Also, if the testcase doesn't have the assignment of the parameter into a separate local temporary (i.e. when the parameter itself is addressable), then it doesn't work either, the loads stay as MEM_REFs instead of being transformed to BIT_FIELD_REFs on the parameter.
