[pph] Handle hidden state in cp/decl2.c

gcc/cp/pph.h

 /* Factored pre-parsed header (PPH) support for C++
 
    Copyright (C) 2012 Free Software Foundation, Inc.
    Contributed by Lawrence Crowl <crowl@google.com> and
    Diego Novillo <dnovillo@google.com>.
 
    This file is part of GCC.
 
    GCC is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
@@ skipping 126 matching lines @@
 
 
 /* Extern functions.  */
 
 /* In pph-core.c  */
 extern void pph_init (void);
 extern void pph_loaded (void);
 extern void pph_finish (void);
 extern void pph_dump_location (FILE *file, location_t loc);
 extern void pph_dump_tree_name (FILE *file, tree t, int flags);
+extern void pph_dump_vec_tree (FILE *file, VEC(tree,gc) *v);
 extern void pph_init_include_tree (void);
 extern void pph_dump_includes (FILE *, pph_stream *, unsigned);
 
 /* In pph-out.c.  */
 extern void pph_out_uint (pph_stream *stream, unsigned int value);
 extern void pph_out_location (pph_stream *stream, location_t loc);
 extern void pph_out_tree (pph_stream *stream, tree t);
+extern void pph_out_tree_vec (pph_stream *stream, VEC(tree,gc) *v);
 extern void pph_out_record_marker (pph_stream *stream,
                         enum pph_record_marker marker, enum pph_tag tag);
 void pph_add_decl_to_symtab (tree, enum pph_symtab_action, bool, bool);
 
 /* In pph-in.c.  */
 extern unsigned int pph_in_uint (pph_stream *stream);
 extern location_t pph_in_location (pph_stream *stream);
 extern tree pph_in_tree (pph_stream *stream);
+extern VEC(tree,gc) *pph_in_tree_vec (pph_stream *stream);
+extern void pph_union_into_tree_vec (VEC(tree,gc) **into, VEC(tree,gc) *from);
 extern enum pph_record_marker pph_in_record_marker (pph_stream *stream,
                         enum pph_tag *tag_p);
 extern bool pph_files_read (void);
 
+/* In decl2.c.  */
+extern void pph_out_decl2_hidden_state (pph_stream *stream);
+extern void pph_in_decl2_hidden_state (pph_stream *stream);
+extern void pph_dump_decl2_hidden_state (FILE *file);
+
 /* In name-lookup.c.  */
 struct binding_table_s;
 extern void pph_out_binding_table (pph_stream *, struct binding_table_s *);
 extern struct binding_table_s *pph_in_binding_table (pph_stream *);
 extern void pph_set_global_identifier_bindings (void);
 
 /* In pt.c.  */
 extern void pph_out_pending_templates_list (pph_stream *);
 extern void pph_out_spec_entry_tables (pph_stream *);
 extern void pph_in_pending_templates_list (pph_stream *);
@@ skipping 14 matching lines @@
 
 /* Return true if PPH has been enabled.  */
 static inline bool
 pph_enabled_p (void)
 {
   return pph_writer_enabled_p () || pph_reader_enabled_p ();
 }
 
 
 #endif  /* GCC_CP_PPH_H  */