http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48109
--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> 2011-03-14 11:36:29 UTC --- (In reply to comment #3) > I suppose a special kind of alias could be invented here. I was thinking of a normal var - tagged with our ObjC meta-data attribute - and then handled in the back end. - this is supposing that varasm.c would be a valid place to recognize ASM_DECLARE_CLASS_REFERENCE/ASM_DECLARE_UNRESOLVED_REFERENCE (or a suitable hook to replace them) - alternatively, the var could be zero-sized, which (together with the ObjC meta-data attribute) can be picked up in darwin.c (but that's maybe kinda hacky).
