gcc/gimple-array-bounds.h

   1 /* Array bounds checking.
   2    Copyright (C) 2020-2021 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 class array_bounds_checker
  24 {
  25   friend class check_array_bounds_dom_walker;
  26
  27 public:
  28   array_bounds_checker (struct function *fun, range_query *v)
  29     : fun (fun), ranges (v) { }
  30   void check ();
  31
  32 private:
  33   static tree check_array_bounds (tree *tp, int *walk_subtree, void *data);
  34   bool check_array_ref (location_t, tree, gimple *, bool ignore_off_by_one);
  35   bool check_mem_ref (location_t, tree, bool ignore_off_by_one);
  36   void check_addr_expr (location_t, tree, gimple *);
  37   const value_range *get_value_range (const_tree op, gimple *);
  38
  39   struct function *fun;
  40   range_query *ranges;
  41 };
  42
  43 #endif // GCC_GIMPLE_ARRAY_BOUNDS_H