compiler-rt/lib/ubsan/ubsan_handlers_cxx.h

   1 //===-- ubsan_handlers_cxx.h ------------------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // Entry points to the runtime library for Clang's undefined behavior sanitizer,
  10 // for C++-specific checks. This code is not linked into C binaries.
  11 //
  12 //===----------------------------------------------------------------------===//
  13 #ifndef UBSAN_HANDLERS_CXX_H
  14 #define UBSAN_HANDLERS_CXX_H
  15
  16 #include "ubsan_value.h"
  17
  18 namespace __ubsan {
  19
  20 struct DynamicTypeCacheMissData {
  21   SourceLocation Loc;
  22   const TypeDescriptor &Type;
  23   void *TypeInfo;
  24   unsigned char TypeCheckKind;
  25 };
  26
  27 /// \brief Handle a runtime type check failure, caused by an incorrect vptr.
  28 /// When this handler is called, all we know is that the type was not in the
  29 /// cache; this does not necessarily imply the existence of a bug.
  30 extern "C" SANITIZER_INTERFACE_ATTRIBUTE
  31 void __ubsan_handle_dynamic_type_cache_miss(
  32   DynamicTypeCacheMissData *Data, ValueHandle Pointer, ValueHandle Hash);
  33 extern "C" SANITIZER_INTERFACE_ATTRIBUTE
  34 void __ubsan_handle_dynamic_type_cache_miss_abort(
  35   DynamicTypeCacheMissData *Data, ValueHandle Pointer, ValueHandle Hash);
  36
  37 struct FunctionTypeMismatchData {
  38   SourceLocation Loc;
  39   const TypeDescriptor &Type;
  40 };
  41
  42 extern "C" SANITIZER_INTERFACE_ATTRIBUTE void
  43 __ubsan_handle_function_type_mismatch_v1(FunctionTypeMismatchData *Data,
  44                                          ValueHandle Val,
  45                                          ValueHandle calleeRTTI,
  46                                          ValueHandle fnRTTI);
  47 extern "C" SANITIZER_INTERFACE_ATTRIBUTE void
  48 __ubsan_handle_function_type_mismatch_v1_abort(FunctionTypeMismatchData *Data,
  49                                                ValueHandle Val,
  50                                                ValueHandle calleeRTTI,
  51                                                ValueHandle fnRTTI);
  52 }
  53
  54 #endif // UBSAN_HANDLERS_CXX_H