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      1 //===--- APValue.cpp - Union class for APFloat/APSInt/Complex -------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 //  This file implements the APValue class.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #include "clang/AST/APValue.h"
     15 #include "clang/AST/ASTContext.h"
     16 #include "clang/AST/CharUnits.h"
     17 #include "clang/AST/DeclCXX.h"
     18 #include "clang/AST/Expr.h"
     19 #include "clang/AST/Type.h"
     20 #include "clang/Basic/Diagnostic.h"
     21 #include "llvm/ADT/SmallString.h"
     22 #include "llvm/Support/raw_ostream.h"
     23 #include "llvm/Support/ErrorHandling.h"
     24 using namespace clang;
     25 
     26 namespace {
     27   struct LVBase {
     28     llvm::PointerIntPair<APValue::LValueBase, 1, bool> BaseAndIsOnePastTheEnd;
     29     CharUnits Offset;
     30     unsigned PathLength;
     31     unsigned CallIndex;
     32   };
     33 }
     34 
     35 struct APValue::LV : LVBase {
     36   static const unsigned InlinePathSpace =
     37       (MaxSize - sizeof(LVBase)) / sizeof(LValuePathEntry);
     38 
     39   /// Path - The sequence of base classes, fields and array indices to follow to
     40   /// walk from Base to the subobject. When performing GCC-style folding, there
     41   /// may not be such a path.
     42   union {
     43     LValuePathEntry Path[InlinePathSpace];
     44     LValuePathEntry *PathPtr;
     45   };
     46 
     47   LV() { PathLength = (unsigned)-1; }
     48   ~LV() { resizePath(0); }
     49 
     50   void resizePath(unsigned Length) {
     51     if (Length == PathLength)
     52       return;
     53     if (hasPathPtr())
     54       delete [] PathPtr;
     55     PathLength = Length;
     56     if (hasPathPtr())
     57       PathPtr = new LValuePathEntry[Length];
     58   }
     59 
     60   bool hasPath() const { return PathLength != (unsigned)-1; }
     61   bool hasPathPtr() const { return hasPath() && PathLength > InlinePathSpace; }
     62 
     63   LValuePathEntry *getPath() { return hasPathPtr() ? PathPtr : Path; }
     64   const LValuePathEntry *getPath() const {
     65     return hasPathPtr() ? PathPtr : Path;
     66   }
     67 };
     68 
     69 namespace {
     70   struct MemberPointerBase {
     71     llvm::PointerIntPair<const ValueDecl*, 1, bool> MemberAndIsDerivedMember;
     72     unsigned PathLength;
     73   };
     74 }
     75 
     76 struct APValue::MemberPointerData : MemberPointerBase {
     77   static const unsigned InlinePathSpace =
     78       (MaxSize - sizeof(MemberPointerBase)) / sizeof(const CXXRecordDecl*);
     79   typedef const CXXRecordDecl *PathElem;
     80   union {
     81     PathElem Path[InlinePathSpace];
     82     PathElem *PathPtr;
     83   };
     84 
     85   MemberPointerData() { PathLength = 0; }
     86   ~MemberPointerData() { resizePath(0); }
     87 
     88   void resizePath(unsigned Length) {
     89     if (Length == PathLength)
     90       return;
     91     if (hasPathPtr())
     92       delete [] PathPtr;
     93     PathLength = Length;
     94     if (hasPathPtr())
     95       PathPtr = new PathElem[Length];
     96   }
     97 
     98   bool hasPathPtr() const { return PathLength > InlinePathSpace; }
     99 
    100   PathElem *getPath() { return hasPathPtr() ? PathPtr : Path; }
    101   const PathElem *getPath() const {
    102     return hasPathPtr() ? PathPtr : Path;
    103   }
    104 };
    105 
    106 // FIXME: Reduce the malloc traffic here.
    107 
    108 APValue::Arr::Arr(unsigned NumElts, unsigned Size) :
    109   Elts(new APValue[NumElts + (NumElts != Size ? 1 : 0)]),
    110   NumElts(NumElts), ArrSize(Size) {}
    111 APValue::Arr::~Arr() { delete [] Elts; }
    112 
    113 APValue::StructData::StructData(unsigned NumBases, unsigned NumFields) :
    114   Elts(new APValue[NumBases+NumFields]),
    115   NumBases(NumBases), NumFields(NumFields) {}
    116 APValue::StructData::~StructData() {
    117   delete [] Elts;
    118 }
    119 
    120 APValue::UnionData::UnionData() : Field(0), Value(new APValue) {}
    121 APValue::UnionData::~UnionData () {
    122   delete Value;
    123 }
    124 
    125 APValue::APValue(const APValue &RHS) : Kind(Uninitialized) {
    126   switch (RHS.getKind()) {
    127   case Uninitialized:
    128     break;
    129   case Int:
    130     MakeInt();
    131     setInt(RHS.getInt());
    132     break;
    133   case Float:
    134     MakeFloat();
    135     setFloat(RHS.getFloat());
    136     break;
    137   case Vector:
    138     MakeVector();
    139     setVector(((const Vec *)(const char *)RHS.Data)->Elts,
    140               RHS.getVectorLength());
    141     break;
    142   case ComplexInt:
    143     MakeComplexInt();
    144     setComplexInt(RHS.getComplexIntReal(), RHS.getComplexIntImag());
    145     break;
    146   case ComplexFloat:
    147     MakeComplexFloat();
    148     setComplexFloat(RHS.getComplexFloatReal(), RHS.getComplexFloatImag());
    149     break;
    150   case LValue:
    151     MakeLValue();
    152     if (RHS.hasLValuePath())
    153       setLValue(RHS.getLValueBase(), RHS.getLValueOffset(), RHS.getLValuePath(),
    154                 RHS.isLValueOnePastTheEnd(), RHS.getLValueCallIndex());
    155     else
    156       setLValue(RHS.getLValueBase(), RHS.getLValueOffset(), NoLValuePath(),
    157                 RHS.getLValueCallIndex());
    158     break;
    159   case Array:
    160     MakeArray(RHS.getArrayInitializedElts(), RHS.getArraySize());
    161     for (unsigned I = 0, N = RHS.getArrayInitializedElts(); I != N; ++I)
    162       getArrayInitializedElt(I) = RHS.getArrayInitializedElt(I);
    163     if (RHS.hasArrayFiller())
    164       getArrayFiller() = RHS.getArrayFiller();
    165     break;
    166   case Struct:
    167     MakeStruct(RHS.getStructNumBases(), RHS.getStructNumFields());
    168     for (unsigned I = 0, N = RHS.getStructNumBases(); I != N; ++I)
    169       getStructBase(I) = RHS.getStructBase(I);
    170     for (unsigned I = 0, N = RHS.getStructNumFields(); I != N; ++I)
    171       getStructField(I) = RHS.getStructField(I);
    172     break;
    173   case Union:
    174     MakeUnion();
    175     setUnion(RHS.getUnionField(), RHS.getUnionValue());
    176     break;
    177   case MemberPointer:
    178     MakeMemberPointer(RHS.getMemberPointerDecl(),
    179                       RHS.isMemberPointerToDerivedMember(),
    180                       RHS.getMemberPointerPath());
    181     break;
    182   case AddrLabelDiff:
    183     MakeAddrLabelDiff();
    184     setAddrLabelDiff(RHS.getAddrLabelDiffLHS(), RHS.getAddrLabelDiffRHS());
    185     break;
    186   }
    187 }
    188 
    189 void APValue::DestroyDataAndMakeUninit() {
    190   if (Kind == Int)
    191     ((APSInt*)(char*)Data)->~APSInt();
    192   else if (Kind == Float)
    193     ((APFloat*)(char*)Data)->~APFloat();
    194   else if (Kind == Vector)
    195     ((Vec*)(char*)Data)->~Vec();
    196   else if (Kind == ComplexInt)
    197     ((ComplexAPSInt*)(char*)Data)->~ComplexAPSInt();
    198   else if (Kind == ComplexFloat)
    199     ((ComplexAPFloat*)(char*)Data)->~ComplexAPFloat();
    200   else if (Kind == LValue)
    201     ((LV*)(char*)Data)->~LV();
    202   else if (Kind == Array)
    203     ((Arr*)(char*)Data)->~Arr();
    204   else if (Kind == Struct)
    205     ((StructData*)(char*)Data)->~StructData();
    206   else if (Kind == Union)
    207     ((UnionData*)(char*)Data)->~UnionData();
    208   else if (Kind == MemberPointer)
    209     ((MemberPointerData*)(char*)Data)->~MemberPointerData();
    210   else if (Kind == AddrLabelDiff)
    211     ((AddrLabelDiffData*)(char*)Data)->~AddrLabelDiffData();
    212   Kind = Uninitialized;
    213 }
    214 
    215 void APValue::swap(APValue &RHS) {
    216   std::swap(Kind, RHS.Kind);
    217   char TmpData[MaxSize];
    218   memcpy(TmpData, Data, MaxSize);
    219   memcpy(Data, RHS.Data, MaxSize);
    220   memcpy(RHS.Data, TmpData, MaxSize);
    221 }
    222 
    223 void APValue::dump() const {
    224   dump(llvm::errs());
    225   llvm::errs() << '\n';
    226 }
    227 
    228 static double GetApproxValue(const llvm::APFloat &F) {
    229   llvm::APFloat V = F;
    230   bool ignored;
    231   V.convert(llvm::APFloat::IEEEdouble, llvm::APFloat::rmNearestTiesToEven,
    232             &ignored);
    233   return V.convertToDouble();
    234 }
    235 
    236 void APValue::dump(raw_ostream &OS) const {
    237   switch (getKind()) {
    238   case Uninitialized:
    239     OS << "Uninitialized";
    240     return;
    241   case Int:
    242     OS << "Int: " << getInt();
    243     return;
    244   case Float:
    245     OS << "Float: " << GetApproxValue(getFloat());
    246     return;
    247   case Vector:
    248     OS << "Vector: ";
    249     getVectorElt(0).dump(OS);
    250     for (unsigned i = 1; i != getVectorLength(); ++i) {
    251       OS << ", ";
    252       getVectorElt(i).dump(OS);
    253     }
    254     return;
    255   case ComplexInt:
    256     OS << "ComplexInt: " << getComplexIntReal() << ", " << getComplexIntImag();
    257     return;
    258   case ComplexFloat:
    259     OS << "ComplexFloat: " << GetApproxValue(getComplexFloatReal())
    260        << ", " << GetApproxValue(getComplexFloatImag());
    261     return;
    262   case LValue:
    263     OS << "LValue: <todo>";
    264     return;
    265   case Array:
    266     OS << "Array: ";
    267     for (unsigned I = 0, N = getArrayInitializedElts(); I != N; ++I) {
    268       getArrayInitializedElt(I).dump(OS);
    269       if (I != getArraySize() - 1) OS << ", ";
    270     }
    271     if (hasArrayFiller()) {
    272       OS << getArraySize() - getArrayInitializedElts() << " x ";
    273       getArrayFiller().dump(OS);
    274     }
    275     return;
    276   case Struct:
    277     OS << "Struct ";
    278     if (unsigned N = getStructNumBases()) {
    279       OS << " bases: ";
    280       getStructBase(0).dump(OS);
    281       for (unsigned I = 1; I != N; ++I) {
    282         OS << ", ";
    283         getStructBase(I).dump(OS);
    284       }
    285     }
    286     if (unsigned N = getStructNumFields()) {
    287       OS << " fields: ";
    288       getStructField(0).dump(OS);
    289       for (unsigned I = 1; I != N; ++I) {
    290         OS << ", ";
    291         getStructField(I).dump(OS);
    292       }
    293     }
    294     return;
    295   case Union:
    296     OS << "Union: ";
    297     getUnionValue().dump(OS);
    298     return;
    299   case MemberPointer:
    300     OS << "MemberPointer: <todo>";
    301     return;
    302   case AddrLabelDiff:
    303     OS << "AddrLabelDiff: <todo>";
    304     return;
    305   }
    306   llvm_unreachable("Unknown APValue kind!");
    307 }
    308 
    309 void APValue::printPretty(raw_ostream &Out, ASTContext &Ctx, QualType Ty) const{
    310   switch (getKind()) {
    311   case APValue::Uninitialized:
    312     Out << "<uninitialized>";
    313     return;
    314   case APValue::Int:
    315     if (Ty->isBooleanType())
    316       Out << (getInt().getBoolValue() ? "true" : "false");
    317     else
    318       Out << getInt();
    319     return;
    320   case APValue::Float:
    321     Out << GetApproxValue(getFloat());
    322     return;
    323   case APValue::Vector: {
    324     Out << '{';
    325     QualType ElemTy = Ty->getAs<VectorType>()->getElementType();
    326     getVectorElt(0).printPretty(Out, Ctx, ElemTy);
    327     for (unsigned i = 1; i != getVectorLength(); ++i) {
    328       Out << ", ";
    329       getVectorElt(i).printPretty(Out, Ctx, ElemTy);
    330     }
    331     Out << '}';
    332     return;
    333   }
    334   case APValue::ComplexInt:
    335     Out << getComplexIntReal() << "+" << getComplexIntImag() << "i";
    336     return;
    337   case APValue::ComplexFloat:
    338     Out << GetApproxValue(getComplexFloatReal()) << "+"
    339         << GetApproxValue(getComplexFloatImag()) << "i";
    340     return;
    341   case APValue::LValue: {
    342     LValueBase Base = getLValueBase();
    343     if (!Base) {
    344       Out << "0";
    345       return;
    346     }
    347 
    348     bool IsReference = Ty->isReferenceType();
    349     QualType InnerTy
    350       = IsReference ? Ty.getNonReferenceType() : Ty->getPointeeType();
    351 
    352     if (!hasLValuePath()) {
    353       // No lvalue path: just print the offset.
    354       CharUnits O = getLValueOffset();
    355       CharUnits S = Ctx.getTypeSizeInChars(InnerTy);
    356       if (!O.isZero()) {
    357         if (IsReference)
    358           Out << "*(";
    359         if (O % S) {
    360           Out << "(char*)";
    361           S = CharUnits::One();
    362         }
    363         Out << '&';
    364       } else if (!IsReference)
    365         Out << '&';
    366 
    367       if (const ValueDecl *VD = Base.dyn_cast<const ValueDecl*>())
    368         Out << *VD;
    369       else
    370         Base.get<const Expr*>()->printPretty(Out, 0, Ctx.getPrintingPolicy());
    371       if (!O.isZero()) {
    372         Out << " + " << (O / S);
    373         if (IsReference)
    374           Out << ')';
    375       }
    376       return;
    377     }
    378 
    379     // We have an lvalue path. Print it out nicely.
    380     if (!IsReference)
    381       Out << '&';
    382     else if (isLValueOnePastTheEnd())
    383       Out << "*(&";
    384 
    385     QualType ElemTy;
    386     if (const ValueDecl *VD = Base.dyn_cast<const ValueDecl*>()) {
    387       Out << *VD;
    388       ElemTy = VD->getType();
    389     } else {
    390       const Expr *E = Base.get<const Expr*>();
    391       E->printPretty(Out, 0, Ctx.getPrintingPolicy());
    392       ElemTy = E->getType();
    393     }
    394 
    395     ArrayRef<LValuePathEntry> Path = getLValuePath();
    396     const CXXRecordDecl *CastToBase = 0;
    397     for (unsigned I = 0, N = Path.size(); I != N; ++I) {
    398       if (ElemTy->getAs<RecordType>()) {
    399         // The lvalue refers to a class type, so the next path entry is a base
    400         // or member.
    401         const Decl *BaseOrMember =
    402         BaseOrMemberType::getFromOpaqueValue(Path[I].BaseOrMember).getPointer();
    403         if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(BaseOrMember)) {
    404           CastToBase = RD;
    405           ElemTy = Ctx.getRecordType(RD);
    406         } else {
    407           const ValueDecl *VD = cast<ValueDecl>(BaseOrMember);
    408           Out << ".";
    409           if (CastToBase)
    410             Out << *CastToBase << "::";
    411           Out << *VD;
    412           ElemTy = VD->getType();
    413         }
    414       } else {
    415         // The lvalue must refer to an array.
    416         Out << '[' << Path[I].ArrayIndex << ']';
    417         ElemTy = Ctx.getAsArrayType(ElemTy)->getElementType();
    418       }
    419     }
    420 
    421     // Handle formatting of one-past-the-end lvalues.
    422     if (isLValueOnePastTheEnd()) {
    423       // FIXME: If CastToBase is non-0, we should prefix the output with
    424       // "(CastToBase*)".
    425       Out << " + 1";
    426       if (IsReference)
    427         Out << ')';
    428     }
    429     return;
    430   }
    431   case APValue::Array: {
    432     const ArrayType *AT = Ctx.getAsArrayType(Ty);
    433     QualType ElemTy = AT->getElementType();
    434     Out << '{';
    435     if (unsigned N = getArrayInitializedElts()) {
    436       getArrayInitializedElt(0).printPretty(Out, Ctx, ElemTy);
    437       for (unsigned I = 1; I != N; ++I) {
    438         Out << ", ";
    439         if (I == 10) {
    440           // Avoid printing out the entire contents of large arrays.
    441           Out << "...";
    442           break;
    443         }
    444         getArrayInitializedElt(I).printPretty(Out, Ctx, ElemTy);
    445       }
    446     }
    447     Out << '}';
    448     return;
    449   }
    450   case APValue::Struct: {
    451     Out << '{';
    452     const RecordDecl *RD = Ty->getAs<RecordType>()->getDecl();
    453     bool First = true;
    454     if (unsigned N = getStructNumBases()) {
    455       const CXXRecordDecl *CD = cast<CXXRecordDecl>(RD);
    456       CXXRecordDecl::base_class_const_iterator BI = CD->bases_begin();
    457       for (unsigned I = 0; I != N; ++I, ++BI) {
    458         assert(BI != CD->bases_end());
    459         if (!First)
    460           Out << ", ";
    461         getStructBase(I).printPretty(Out, Ctx, BI->getType());
    462         First = false;
    463       }
    464     }
    465     for (RecordDecl::field_iterator FI = RD->field_begin();
    466          FI != RD->field_end(); ++FI) {
    467       if (!First)
    468         Out << ", ";
    469       if (FI->isUnnamedBitfield()) continue;
    470       getStructField(FI->getFieldIndex()).
    471         printPretty(Out, Ctx, FI->getType());
    472       First = false;
    473     }
    474     Out << '}';
    475     return;
    476   }
    477   case APValue::Union:
    478     Out << '{';
    479     if (const FieldDecl *FD = getUnionField()) {
    480       Out << "." << *FD << " = ";
    481       getUnionValue().printPretty(Out, Ctx, FD->getType());
    482     }
    483     Out << '}';
    484     return;
    485   case APValue::MemberPointer:
    486     // FIXME: This is not enough to unambiguously identify the member in a
    487     // multiple-inheritance scenario.
    488     if (const ValueDecl *VD = getMemberPointerDecl()) {
    489       Out << '&' << *cast<CXXRecordDecl>(VD->getDeclContext()) << "::" << *VD;
    490       return;
    491     }
    492     Out << "0";
    493     return;
    494   case APValue::AddrLabelDiff:
    495     Out << "&&" << getAddrLabelDiffLHS()->getLabel()->getName();
    496     Out << " - ";
    497     Out << "&&" << getAddrLabelDiffRHS()->getLabel()->getName();
    498     return;
    499   }
    500   llvm_unreachable("Unknown APValue kind!");
    501 }
    502 
    503 std::string APValue::getAsString(ASTContext &Ctx, QualType Ty) const {
    504   std::string Result;
    505   llvm::raw_string_ostream Out(Result);
    506   printPretty(Out, Ctx, Ty);
    507   Out.flush();
    508   return Result;
    509 }
    510 
    511 const APValue::LValueBase APValue::getLValueBase() const {
    512   assert(isLValue() && "Invalid accessor");
    513   return ((const LV*)(const void*)Data)->BaseAndIsOnePastTheEnd.getPointer();
    514 }
    515 
    516 bool APValue::isLValueOnePastTheEnd() const {
    517   assert(isLValue() && "Invalid accessor");
    518   return ((const LV*)(const void*)Data)->BaseAndIsOnePastTheEnd.getInt();
    519 }
    520 
    521 CharUnits &APValue::getLValueOffset() {
    522   assert(isLValue() && "Invalid accessor");
    523   return ((LV*)(void*)Data)->Offset;
    524 }
    525 
    526 bool APValue::hasLValuePath() const {
    527   assert(isLValue() && "Invalid accessor");
    528   return ((const LV*)(const char*)Data)->hasPath();
    529 }
    530 
    531 ArrayRef<APValue::LValuePathEntry> APValue::getLValuePath() const {
    532   assert(isLValue() && hasLValuePath() && "Invalid accessor");
    533   const LV &LVal = *((const LV*)(const char*)Data);
    534   return ArrayRef<LValuePathEntry>(LVal.getPath(), LVal.PathLength);
    535 }
    536 
    537 unsigned APValue::getLValueCallIndex() const {
    538   assert(isLValue() && "Invalid accessor");
    539   return ((const LV*)(const char*)Data)->CallIndex;
    540 }
    541 
    542 void APValue::setLValue(LValueBase B, const CharUnits &O, NoLValuePath,
    543                         unsigned CallIndex) {
    544   assert(isLValue() && "Invalid accessor");
    545   LV &LVal = *((LV*)(char*)Data);
    546   LVal.BaseAndIsOnePastTheEnd.setPointer(B);
    547   LVal.BaseAndIsOnePastTheEnd.setInt(false);
    548   LVal.Offset = O;
    549   LVal.CallIndex = CallIndex;
    550   LVal.resizePath((unsigned)-1);
    551 }
    552 
    553 void APValue::setLValue(LValueBase B, const CharUnits &O,
    554                         ArrayRef<LValuePathEntry> Path, bool IsOnePastTheEnd,
    555                         unsigned CallIndex) {
    556   assert(isLValue() && "Invalid accessor");
    557   LV &LVal = *((LV*)(char*)Data);
    558   LVal.BaseAndIsOnePastTheEnd.setPointer(B);
    559   LVal.BaseAndIsOnePastTheEnd.setInt(IsOnePastTheEnd);
    560   LVal.Offset = O;
    561   LVal.CallIndex = CallIndex;
    562   LVal.resizePath(Path.size());
    563   memcpy(LVal.getPath(), Path.data(), Path.size() * sizeof(LValuePathEntry));
    564 }
    565 
    566 const ValueDecl *APValue::getMemberPointerDecl() const {
    567   assert(isMemberPointer() && "Invalid accessor");
    568   const MemberPointerData &MPD = *((const MemberPointerData*)(const char*)Data);
    569   return MPD.MemberAndIsDerivedMember.getPointer();
    570 }
    571 
    572 bool APValue::isMemberPointerToDerivedMember() const {
    573   assert(isMemberPointer() && "Invalid accessor");
    574   const MemberPointerData &MPD = *((const MemberPointerData*)(const char*)Data);
    575   return MPD.MemberAndIsDerivedMember.getInt();
    576 }
    577 
    578 ArrayRef<const CXXRecordDecl*> APValue::getMemberPointerPath() const {
    579   assert(isMemberPointer() && "Invalid accessor");
    580   const MemberPointerData &MPD = *((const MemberPointerData*)(const char*)Data);
    581   return ArrayRef<const CXXRecordDecl*>(MPD.getPath(), MPD.PathLength);
    582 }
    583 
    584 void APValue::MakeLValue() {
    585   assert(isUninit() && "Bad state change");
    586   assert(sizeof(LV) <= MaxSize && "LV too big");
    587   new ((void*)(char*)Data) LV();
    588   Kind = LValue;
    589 }
    590 
    591 void APValue::MakeArray(unsigned InitElts, unsigned Size) {
    592   assert(isUninit() && "Bad state change");
    593   new ((void*)(char*)Data) Arr(InitElts, Size);
    594   Kind = Array;
    595 }
    596 
    597 void APValue::MakeMemberPointer(const ValueDecl *Member, bool IsDerivedMember,
    598                                 ArrayRef<const CXXRecordDecl*> Path) {
    599   assert(isUninit() && "Bad state change");
    600   MemberPointerData *MPD = new ((void*)(char*)Data) MemberPointerData;
    601   Kind = MemberPointer;
    602   MPD->MemberAndIsDerivedMember.setPointer(Member);
    603   MPD->MemberAndIsDerivedMember.setInt(IsDerivedMember);
    604   MPD->resizePath(Path.size());
    605   memcpy(MPD->getPath(), Path.data(), Path.size()*sizeof(const CXXRecordDecl*));
    606 }
    607