* cpppch.c (struct cpp_savedstate): Add defs and n_defs members.
(count_defs): Keep track of number of defs as well as total size.
(write_defs): Put every definition in cpp_savedstate's defs array.
(comp_hashnode): Define. Comparison function for qsort.
(cpp_write_pch_deps): Sort definitions before writing them.
(struct ht_node_list): Define. Like cpp_savedstate but simpler.
(collect_ht_nodes): Define.
(cpp_valid_state): When verifying that undefined identifiers in
the pch file are still undefined, read a sorted list of undefined
identifiers, collect all defined identifiers into a sorted list,
and walk through both lists to make sure there's no match.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@65101
138bc75d-0d04-0410-961f-
82ee72b054a4