--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ubsan.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,69 @@
+/* UndefinedBehaviorSanitizer, undefined behavior detector.
+   Copyright (C) 2013-2017 Free Software Foundation, Inc.
+   Contributed by Marek Polacek <polacek@redhat.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_UBSAN_H
+#define GCC_UBSAN_H
+
+/* The various kinds of NULL pointer checks.  */
+enum ubsan_null_ckind {
+  UBSAN_LOAD_OF,
+  UBSAN_STORE_OF,
+  UBSAN_REF_BINDING,
+  UBSAN_MEMBER_ACCESS,
+  UBSAN_MEMBER_CALL,
+  UBSAN_CTOR_CALL,
+  UBSAN_DOWNCAST_POINTER,
+  UBSAN_DOWNCAST_REFERENCE,
+  UBSAN_UPCAST,
+  UBSAN_CAST_TO_VBASE
+};
+
+/* This controls how ubsan prints types.  Used in ubsan_type_descriptor.  */
+enum ubsan_print_style {
+  UBSAN_PRINT_NORMAL,
+  UBSAN_PRINT_POINTER,
+  UBSAN_PRINT_ARRAY
+};
+
+/* This controls ubsan_encode_value behavior.  */
+enum ubsan_encode_value_phase {
+  UBSAN_ENCODE_VALUE_GENERIC,
+  UBSAN_ENCODE_VALUE_GIMPLE,
+  UBSAN_ENCODE_VALUE_RTL
+};
+
+extern bool ubsan_expand_bounds_ifn (gimple_stmt_iterator *);
+extern bool ubsan_expand_null_ifn (gimple_stmt_iterator *);
+extern bool ubsan_expand_objsize_ifn (gimple_stmt_iterator *);
+extern bool ubsan_expand_ptr_ifn (gimple_stmt_iterator *);
+extern bool ubsan_expand_vptr_ifn (gimple_stmt_iterator *);
+extern bool ubsan_instrument_unreachable (gimple_stmt_iterator *);
+extern tree ubsan_create_data (const char *, int, const location_t *, ...);
+extern tree ubsan_type_descriptor (tree, ubsan_print_style
+					 = UBSAN_PRINT_NORMAL);
+extern tree ubsan_encode_value (tree, ubsan_encode_value_phase
+				      = UBSAN_ENCODE_VALUE_GENERIC);
+extern bool is_ubsan_builtin_p (tree);
+extern tree ubsan_build_overflow_builtin (tree_code, location_t, tree, tree,
+					  tree, tree *);
+extern tree ubsan_instrument_float_cast (location_t, tree, tree);
+extern tree ubsan_get_source_location_type (void);
+
+#endif  /* GCC_UBSAN_H  */