I add the following code in parser.c to replace htab: … struct gimple_symtab_hasher : ggc_cache_hasher<struct gimple_symtab_entry_def *> { /* Return the hash value of the declaration name of a gimple_symtab_entry_def object pointed by ENTRY. */ static hashval_t hash(struct gimple_symtab_entry_def *base){return IDENTIFIER_HASH_VALUE(base->id);} /* Returns non-zero if ENTRY1 and ENTRY2 point to gimple_symtab_entry_def objects corresponding to the same declaration. */ static bool equal (const struct gimple_symtab_entry_def *base1, const struct gimple_symtab_entry_def *base2){return base1->id == base2->id;} static void handle_cache_entry(struct gimple_symtab_entry_def *&m) { extern void gt_ggc_mx (struct gimple_symtab_entry_def *&); if (m == HTAB_EMPTY_ENTRY || m == HTAB_DELETED_ENTRY) return; else if (ggc_marked_p (m->id)) gt_ggc_mx (m); else m = static_cast<struct gimple_symtab_entry_def *> (HTAB_DELETED_ENTRY); } };
/* Gimple symbol table. */ static GTY((cache)) hash_table<gimple_symtab_hasher> *gimple_symtab; … But I got undefined symbols when compiling it: … Undefined symbols for architecture x86_64: "gt_ggc_mx(gimple_symtab_entry_def*&)", referenced from: gt_clear_caches_gt_gimple_parser_h() in parser.o "gt_pch_nx(gimple_symtab_entry_def*&)", referenced from: gt_pch_nx_hash_table_gimple_symtab_hasher_(void*) in parser.o "_c_global_trees", referenced from: gimple_main() in parser.o ld: symbol(s) not found for architecture x86_64 collect2: error: ld returned 1 exit status make[3]: *** [gimple1] Error 1 make[2]: *** [all-stage2-gcc] Error 2 make[1]: *** [stage2-bubble] Error 2 make: *** [all] Error 2 Could someone tell me how to fix this? — Regards, Yinsong >