| //===-- ubsan_type_hash.cc ------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implementation of a hash table for fast checking of inheritance |
| // relationships. This file is only linked into C++ compilations, and is |
| // permitted to use language features which require a C++ ABI library. |
| // |
| // Most of the implementation lives in an ABI-specific source file |
| // (ubsan_type_hash_{itanium,win}.cc). |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ubsan_platform.h" |
| #if CAN_SANITIZE_UB |
| #include "ubsan_type_hash.h" |
| |
| #include "sanitizer_common/sanitizer_common.h" |
| |
| /// A cache of recently-checked hashes. Mini hash table with "random" evictions. |
| __ubsan::HashValue |
| __ubsan::__ubsan_vptr_type_cache[__ubsan::VptrTypeCacheSize]; |
| |
| __ubsan::DynamicTypeInfo __ubsan::getDynamicTypeInfoFromObject(void *Object) { |
| void *VtablePtr = *reinterpret_cast<void **>(Object); |
| return getDynamicTypeInfoFromVtable(VtablePtr); |
| } |
| |
| #endif // CAN_SANITIZE_UB |
