gcc/ubsan.h

   1 /* UndefinedBehaviorSanitizer, undefined behavior detector.
   2    Copyright (C) 2013-2014 Free Software Foundation, Inc.
   3    Contributed by Marek Polacek <polacek@redhat.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GCC_UBSAN_H
  22 #define GCC_UBSAN_H
  23
  24 /* The various kinds of NULL pointer checks.  */
  25 enum ubsan_null_ckind {
  26   UBSAN_LOAD_OF,
  27   UBSAN_STORE_OF,
  28   UBSAN_REF_BINDING,
  29   UBSAN_MEMBER_ACCESS,
  30   UBSAN_MEMBER_CALL,
  31   UBSAN_CTOR_CALL
  32 };
  33
  34 /* This controls how ubsan prints types.  Used in ubsan_type_descriptor.  */
  35 enum ubsan_print_style {
  36   UBSAN_PRINT_NORMAL,
  37   UBSAN_PRINT_POINTER,
  38   UBSAN_PRINT_ARRAY
  39 };
  40
  41 /* An extra data used by ubsan pointer checking.  */
  42 struct ubsan_mismatch_data {
  43   tree align;
  44   tree ckind;
  45 };
  46
  47 extern bool ubsan_expand_bounds_ifn (gimple_stmt_iterator *);
  48 extern bool ubsan_expand_null_ifn (gimple_stmt_iterator *);
  49 extern tree ubsan_instrument_unreachable (location_t);
  50 extern tree ubsan_create_data (const char *, const location_t *,
  51                                const struct ubsan_mismatch_data *, ...);
  52 extern tree ubsan_type_descriptor (tree, enum ubsan_print_style = UBSAN_PRINT_NORMAL);
  53 extern tree ubsan_encode_value (tree, bool = false);
  54 extern bool is_ubsan_builtin_p (tree);
  55 extern tree ubsan_build_overflow_builtin (tree_code, location_t, tree, tree, tree);
  56 extern tree ubsan_instrument_float_cast (location_t, tree, tree);
  57
  58 #endif  /* GCC_UBSAN_H  */
  59