1 /* Array bounds checking. 2 Copyright (C) 2020-2022 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING3. If not see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef GCC_GIMPLE_ARRAY_BOUNDS_H 21 #define GCC_GIMPLE_ARRAY_BOUNDS_H 22 23 #include "pointer-query.h" 24 25 class array_bounds_checker 26 { 27 friend class check_array_bounds_dom_walker; 28 29 public: 30 array_bounds_checker (struct function *, range_query *); 31 void check (); 32 33 private: 34 static tree check_array_bounds (tree *tp, int *walk_subtree, void *data); 35 bool check_array_ref (location_t, tree, gimple *, bool ignore_off_by_one); 36 bool check_mem_ref (location_t, tree, bool ignore_off_by_one); 37 void check_addr_expr (location_t, tree, gimple *); 38 const value_range *get_value_range (const_tree op, gimple *); 39 40 /* Current function. */ 41 struct function *fun; 42 /* A pointer_query object to store information about pointers and 43 their targets in. */ 44 pointer_query m_ptr_qry; 45 /* Current statement. */ 46 gimple *m_stmt; 47 }; 48 49 #endif // GCC_GIMPLE_ARRAY_BOUNDS_H 50