On Mon, Aug 1, 2011 at 11:53 AM, Joseph S. Myers <jos...@codesourcery.com> wrote: > On Mon, 1 Aug 2011, Richard Guenther wrote: > >> I think it's the only viable solution (use the full enum for a non-GCC stage1 >> C++ compiler). We could help it somewhat by at least placing >> enum bitfields first/last in our bitfield groups. > > Are GCC and other compilers declaring that they support the GNU C and C++ > languages by defining __GNUC__ really the only compilers with this > extension? Feature tests for particular features are generally better > than testing for whether the compiler in use is GCC. (Using configure > tests for things in ansidecl.h does require checking where in the gcc and > src repositories those things are used, to make sure that the relevant > configure tests are used everywhere necessary.) > > (Actually, C++03 appears to support enum bit-fields - it's only for C that > they are a GNU extension - so can't we just enable them unconditionally > when building as C++?)
Oh, sure - that's even better. Richard.
