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1 //===-- ubsan_type_hash.cc ------------------------------------------------===//
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2 //
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3 // This file is distributed under the University of Illinois Open Source
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4 // License. See LICENSE.TXT for details.
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5 //
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6 //===----------------------------------------------------------------------===//
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7 //
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8 // Implementation of a hash table for fast checking of inheritance
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9 // relationships. This file is only linked into C++ compilations, and is
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10 // permitted to use language features which require a C++ ABI library.
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11 //
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12 // Most of the implementation lives in an ABI-specific source file
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13 // (ubsan_type_hash_{itanium,win}.cc).
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14 //
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15 //===----------------------------------------------------------------------===//
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16
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17 #include "ubsan_platform.h"
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18 #if CAN_SANITIZE_UB
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19 #include "ubsan_type_hash.h"
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20
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21 #include "sanitizer_common/sanitizer_common.h"
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22
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23 /// A cache of recently-checked hashes. Mini hash table with "random" evictions.
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24 __ubsan::HashValue
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25 __ubsan::__ubsan_vptr_type_cache[__ubsan::VptrTypeCacheSize];
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26
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27 __ubsan::DynamicTypeInfo __ubsan::getDynamicTypeInfoFromObject(void *Object) {
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28 void *VtablePtr = *reinterpret_cast<void **>(Object);
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29 return getDynamicTypeInfoFromVtable(VtablePtr);
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30 }
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31
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32 #endif // CAN_SANITIZE_UB
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