https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107801
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #11) > I think we can just use bitset::size_type for the _M_bytes member. This compiles for all multilibs of x86_64, h8300-elf, and msp430-elf.