254 struct lang_hooks  struct
257   const char *name;
261   size_t identifier_size;
264   void (*free_lang_data) (tree);
270   size_t (*tree_size) (enum tree_code);
274   unsigned int (*option_lang_mask) (void);
277   void (*init_options_struct) (struct gcc_options *opts);
282   void (*init_options) (unsigned int decoded_options_count,
287   void (*initialize_diagnostics) (diagnostic_context *);
292   bool (*complain_wrong_lang_p) (const struct cl_option *option);
304   bool (*handle_option) (size_t code, const char *arg, int value, int kind,
316   bool (*post_options) (const char **);
321   bool (*init) (void);
324   void (*finish) (void);
327   void (*parse_file) (void);
330   bool (*missing_noreturn_ok_p) (tree);
334   alias_set_type (*get_alias_set) (tree);
338   void (*finish_incomplete_decl) (tree);
342   void (*dup_lang_specific_decl) (tree);
349   void (*set_decl_assembler_name) (tree);
353   void (*print_statistics) (void);
357   lang_print_tree_hook print_xnode;
361   lang_print_tree_hook print_decl;
362   lang_print_tree_hook print_type;
363   lang_print_tree_hook print_identifier;
374   const char *(*decl_printable_name) (tree decl, int verbosity);
379   const char *(*dwarf_name) (tree, int verbosity);
384   int (*types_compatible_p) (tree x, tree y);
408   struct lang_hooks_for_tree_inlining tree_inlining;  argument
410   struct lang_hooks_for_callgraph callgraph;  argument
412   struct lang_hooks_for_tree_dump tree_dump;  argument
414   struct lang_hooks_for_decls decls;  argument
416   struct lang_hooks_for_types types;  argument
418   struct lang_hooks_for_lto lto;  argument
422   tree (*get_innermost_generic_parms) (const_tree);
426   tree (*get_innermost_generic_args) (const_tree);
429   bool (*function_parameter_pack_p) (const_tree);
433   int (*gimplify_expr) (tree *, gimple_seq *, gimple_seq *);
436   tree (*builtin_function) (tree decl);
444   tree (*builtin_function_ext_scope) (tree decl);
447   void (*init_ts) (void);
452   tree (*expr_to_decl) (tree expr, bool *tc, bool *se);
455   tree (*eh_personality) (void);
458   tree (*eh_runtime_type) (tree);
485 extern struct lang_hooks lang_hooks;  argument