------- Comment #3 from jakub at gcc dot gnu dot org 2007-12-11 12:59 ------- Actually, I'm not sure what type the shifts are supposed to be done with, because C++ says that only bitfields smaller than int/unsigned int are promoted. "An rvalue for an integral bit-field (9.6) can be converted to an rvalue of type int if int can represent all the values of the bit-field; otherwise, it can be converted to unsigned int if unsigned int can represent all the values of the bit-field. If the bit-field is larger yet, no integral promotion applies to it." So, is the shift supposed to be done in the base type of the bitfield, or in a type with bitfield's precision?
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33819
