On Fri, 2005-09-30 at 16:29 +0200, Olivier Hainque wrote: > Daniel Berlin wrote: > > > I am still unclear on one point: is it fine to reuse the same tag for > > > possibly different designated types ? > > > > Yes, as long as they have the same alias set. > > OK. A last detail: > > On the first tag_set 0 creation, we get into: > > if (var_ann (ptr)->type_mem_tag == NULL_TREE) > tag = create_memory_tag (tag_type, true); > > and, if doing nothing special, trip on > > /* Make sure that the type tag has the same alias set as the > pointed-to type. */ > gcc_assert (tag_set == get_alias_set (tag));
Well, doesn't the pointed-to type have set 0 because of TYPE_REF_CAN_ALIAS_ALL (or whatever it's named :P)? I'm a bit confused.
