http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50268
--- Comment #13 from Marc Glisse <marc.glisse at normalesup dot org> 2011-09-02 12:23:33 UTC --- (In reply to comment #12) > Created attachment 25178 [details] > Work in progress patch for the _M_are_all_aux issue > > I'm considering doing something like this: what do you think? Can we tidy > somehow the general case (_Nw > 1)? (patch already passes the existing > bitset::all test) Doesn't _Base_bitset<1> also need a special case for _Nb==_GLIBCXX_BITSET_BITS_PER_WORD ? I think we could express the constant as ~static_cast<_WordT>(0)>>(_GLIBCXX_BITSET_BITS_PER_WORD-_Nb) so we don't need a special case (and something similar for the last word of the generic _Base_bitset)