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      1 /* UndefinedBehaviorSanitizer, undefined behavior detector.
      2    Copyright (C) 2013-2022 Free Software Foundation, Inc.
      3    Contributed by Marek Polacek <polacek (at) 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   UBSAN_DOWNCAST_POINTER,
     33   UBSAN_DOWNCAST_REFERENCE,
     34   UBSAN_UPCAST,
     35   UBSAN_CAST_TO_VBASE
     36 };
     37 
     38 /* This controls how ubsan prints types.  Used in ubsan_type_descriptor.  */
     39 enum ubsan_print_style {
     40   UBSAN_PRINT_NORMAL,
     41   UBSAN_PRINT_POINTER,
     42   UBSAN_PRINT_ARRAY
     43 };
     44 
     45 /* This controls ubsan_encode_value behavior.  */
     46 enum ubsan_encode_value_phase {
     47   UBSAN_ENCODE_VALUE_GENERIC,
     48   UBSAN_ENCODE_VALUE_GIMPLE,
     49   UBSAN_ENCODE_VALUE_RTL
     50 };
     51 
     52 extern bool ubsan_expand_bounds_ifn (gimple_stmt_iterator *);
     53 extern bool ubsan_expand_null_ifn (gimple_stmt_iterator *);
     54 extern bool ubsan_expand_objsize_ifn (gimple_stmt_iterator *);
     55 extern bool ubsan_expand_ptr_ifn (gimple_stmt_iterator *);
     56 extern bool ubsan_expand_vptr_ifn (gimple_stmt_iterator *);
     57 extern bool ubsan_instrument_unreachable (gimple_stmt_iterator *);
     58 extern tree ubsan_create_data (const char *, int, const location_t *, ...);
     59 extern tree ubsan_type_descriptor (tree, ubsan_print_style
     60 					 = UBSAN_PRINT_NORMAL);
     61 extern tree ubsan_encode_value (tree, ubsan_encode_value_phase
     62 				      = UBSAN_ENCODE_VALUE_GENERIC);
     63 extern bool is_ubsan_builtin_p (tree);
     64 extern tree ubsan_build_overflow_builtin (tree_code, location_t, tree, tree,
     65 					  tree, tree *);
     66 extern tree ubsan_instrument_float_cast (location_t, tree, tree);
     67 extern tree ubsan_get_source_location_type (void);
     68 
     69 #endif  /* GCC_UBSAN_H  */
     70