* cpphash.c (_cpp_make_hashnode): Rename make_HASHNODE, now static. Allocate the hashnode and its string in the same block of memory. (del_HASHNODE): Don't free h->name. (_cpp_lookup): If there is no entry for this string, create one, of type T_VOID. (_cpp_lookup_slot): Delete. * cpphash.h: Update prototypes. * cpplex.c (maybe_macroexpand): Check for hp->type == T_VOID, not hp == NULL. * cpplib.c (do_define, do_undef, do_pragma_poison, do_assert, do_unassert, cpp_defined): Use _cpp_lookup. Don't create a node here, just fill in the value field properly. "Delete" entries by setting the value field to T_VOID. Check for hp->type == T_VOID, not hp == NULL. * Makefile.in (cpplib.o): Don't depend on $(HASHTAB_H). * cpperror.c, cppexp.c, cpplex.c, cpplib.c: Don't include hashtab.h. From-SVN: r33581
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