Remove tabs, and whitespace cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/RegionStore.cpp b/lib/Analysis/RegionStore.cpp
index 5114035..4186690 100644
--- a/lib/Analysis/RegionStore.cpp
+++ b/lib/Analysis/RegionStore.cpp
@@ -41,21 +41,21 @@
namespace {
struct VISIBILITY_HIDDEN minimal_features_tag {};
-struct VISIBILITY_HIDDEN maximal_features_tag {};
-
+struct VISIBILITY_HIDDEN maximal_features_tag {};
+
class VISIBILITY_HIDDEN RegionStoreFeatures {
bool SupportsFields;
bool SupportsRemaining;
-
+
public:
RegionStoreFeatures(minimal_features_tag) :
SupportsFields(false), SupportsRemaining(false) {}
-
+
RegionStoreFeatures(maximal_features_tag) :
SupportsFields(true), SupportsRemaining(false) {}
-
+
void enableFields(bool t) { SupportsFields = t; }
-
+
bool supportsFields() const { return SupportsFields; }
bool supportsRemaining() const { return SupportsRemaining; }
};
@@ -107,7 +107,7 @@
static bool IsAnyPointerOrIntptr(QualType ty, ASTContext &Ctx) {
if (ty->isAnyPointerType())
return true;
-
+
return ty->isIntegerType() && ty->isScalarType() &&
Ctx.getTypeSize(ty) == Ctx.getTypeSize(Ctx.VoidPtrTy);
}
@@ -117,10 +117,10 @@
//===----------------------------------------------------------------------===//
namespace {
-
+
class VISIBILITY_HIDDEN RegionStoreSubRegionMap : public SubRegionMap {
typedef llvm::ImmutableSet<const MemRegion*> SetTy;
- typedef llvm::DenseMap<const MemRegion*, SetTy> Map;
+ typedef llvm::DenseMap<const MemRegion*, SetTy> Map;
SetTy::Factory F;
Map M;
public:
@@ -135,27 +135,27 @@
I->second = F.Add(I->second, SubRegion);
return false;
}
-
+
void process(llvm::SmallVectorImpl<const SubRegion*> &WL, const SubRegion *R);
-
+
~RegionStoreSubRegionMap() {}
-
+
bool iterSubRegions(const MemRegion* Parent, Visitor& V) const {
Map::iterator I = M.find(Parent);
if (I == M.end())
return true;
-
+
llvm::ImmutableSet<const MemRegion*> S = I->second;
for (llvm::ImmutableSet<const MemRegion*>::iterator SI=S.begin(),SE=S.end();
SI != SE; ++SI) {
if (!V.Visit(Parent, *SI))
return false;
}
-
+
return true;
}
-
+
typedef SetTy::iterator iterator;
std::pair<iterator, iterator> begin_end(const MemRegion *R) {
@@ -163,13 +163,13 @@
SetTy S = I == M.end() ? F.GetEmptySet() : I->second;
return std::make_pair(S.begin(), S.end());
}
-};
+};
class VISIBILITY_HIDDEN RegionStoreManager : public StoreManager {
const RegionStoreFeatures Features;
RegionBindings::Factory RBFactory;
public:
- RegionStoreManager(GRStateManager& mgr, const RegionStoreFeatures &f)
+ RegionStoreManager(GRStateManager& mgr, const RegionStoreFeatures &f)
: StoreManager(mgr),
Features(f),
RBFactory(mgr.getAllocator()) {}
@@ -177,14 +177,14 @@
virtual ~RegionStoreManager() {}
SubRegionMap *getSubRegionMap(const GRState *state);
-
+
RegionStoreSubRegionMap *getRegionStoreSubRegionMap(const GRState *state);
-
-
+
+
/// getDefaultBinding - Returns an SVal* representing an optional default
/// binding associated with a region and its subregions.
Optional<SVal> getDefaultBinding(const GRState *state, const MemRegion *R);
-
+
/// getLValueString - Returns an SVal representing the lvalue of a
/// StringLiteral. Within RegionStore a StringLiteral has an
/// associated StringRegion, and the lvalue of a StringLiteral is
@@ -202,11 +202,11 @@
/// VarRegion, and the lvalue of the variable is the lvalue of that region.
SVal getLValueVar(const GRState *ST, const VarDecl *VD,
const LocationContext *LC);
-
+
SVal getLValueIvar(const GRState *state, const ObjCIvarDecl* D, SVal Base);
SVal getLValueField(const GRState *state, SVal Base, const FieldDecl* D);
-
+
SVal getLValueFieldOrIvar(const GRState *state, SVal Base, const Decl* D);
SVal getLValueElement(const GRState *state, QualType elementType,
@@ -224,7 +224,7 @@
SVal EvalBinOp(const GRState *state, BinaryOperator::Opcode Op,Loc L,
NonLoc R, QualType resultTy);
- Store getInitialStore(const LocationContext *InitLoc) {
+ Store getInitialStore(const LocationContext *InitLoc) {
return RBFactory.GetEmptyMap().getRoot();
}
@@ -234,20 +234,20 @@
const GRState *InvalidateRegion(const GRState *state, const MemRegion *R,
const Expr *E, unsigned Count);
-
+
private:
void RemoveSubRegionBindings(RegionBindings &B,
RegionDefaultBindings &DVM,
RegionDefaultBindings::Factory &DVMFactory,
const MemRegion *R,
RegionStoreSubRegionMap &M);
-
-public:
+
+public:
const GRState *Bind(const GRState *state, Loc LV, SVal V);
const GRState *BindCompoundLiteral(const GRState *state,
const CompoundLiteralExpr* CL, SVal V);
-
+
const GRState *BindDecl(const GRState *ST, const VarDecl *VD,
const LocationContext *LC, SVal InitVal);
@@ -258,10 +258,10 @@
/// BindStruct - Bind a compound value to a structure.
const GRState *BindStruct(const GRState *, const TypedRegion* R, SVal V);
-
+
const GRState *BindArray(const GRState *state, const TypedRegion* R, SVal V);
-
- /// KillStruct - Set the entire struct to unknown.
+
+ /// KillStruct - Set the entire struct to unknown.
const GRState *KillStruct(const GRState *state, const TypedRegion* R);
const GRState *setDefaultValue(const GRState *state, const MemRegion* R, SVal V);
@@ -271,7 +271,7 @@
//===------------------------------------------------------------------===//
// Loading values from regions.
//===------------------------------------------------------------------===//
-
+
/// The high level logic for this method is this:
/// Retrieve (L)
/// if L has binding
@@ -289,28 +289,28 @@
SVal RetrieveElement(const GRState *state, const ElementRegion *R);
SVal RetrieveField(const GRState *state, const FieldRegion *R);
-
+
SVal RetrieveObjCIvar(const GRState *state, const ObjCIvarRegion *R);
-
+
SVal RetrieveVar(const GRState *state, const VarRegion *R);
-
+
SVal RetrieveLazySymbol(const GRState *state, const TypedRegion *R);
-
+
SVal RetrieveFieldOrElementCommon(const GRState *state, const TypedRegion *R,
QualType Ty, const MemRegion *superR);
-
+
/// Retrieve the values in a struct and return a CompoundVal, used when doing
- /// struct copy:
- /// struct s x, y;
+ /// struct copy:
+ /// struct s x, y;
/// x = y;
/// y's value is retrieved by this method.
SVal RetrieveStruct(const GRState *St, const TypedRegion* R);
-
+
SVal RetrieveArray(const GRState *St, const TypedRegion* R);
-
+
std::pair<const GRState*, const MemRegion*>
GetLazyBinding(RegionBindings B, const MemRegion *R);
-
+
const GRState* CopyLazyBindings(nonloc::LazyCompoundVal V,
const GRState *state,
const TypedRegion *R);
@@ -318,7 +318,7 @@
//===------------------------------------------------------------------===//
// State pruning.
//===------------------------------------------------------------------===//
-
+
/// RemoveDeadBindings - Scans the RegionStore of 'state' for dead values.
/// It returns a new Store with these values removed.
void RemoveDeadBindings(GRState &state, Stmt* Loc, SymbolReaper& SymReaper,
@@ -327,14 +327,14 @@
//===------------------------------------------------------------------===//
// Region "extents".
//===------------------------------------------------------------------===//
-
+
const GRState *setExtent(const GRState *state, const MemRegion* R, SVal Extent);
SVal getSizeInElements(const GRState *state, const MemRegion* R);
//===------------------------------------------------------------------===//
// Utility methods.
//===------------------------------------------------------------------===//
-
+
static inline RegionBindings GetRegionBindings(Store store) {
return RegionBindings(static_cast<const RegionBindings::TreeTy*>(store));
}
@@ -350,7 +350,7 @@
BasicValueFactory& getBasicVals() {
return StateMgr.getBasicVals();
}
-
+
// FIXME: Remove.
ASTContext& getContext() { return StateMgr.getContext(); }
};
@@ -374,31 +374,31 @@
void
RegionStoreSubRegionMap::process(llvm::SmallVectorImpl<const SubRegion*> &WL,
- const SubRegion *R) {
+ const SubRegion *R) {
const MemRegion *superR = R->getSuperRegion();
if (add(superR, R))
if (const SubRegion *sr = dyn_cast<SubRegion>(superR))
- WL.push_back(sr);
+ WL.push_back(sr);
}
RegionStoreSubRegionMap*
RegionStoreManager::getRegionStoreSubRegionMap(const GRState *state) {
RegionBindings B = GetRegionBindings(state->getStore());
RegionStoreSubRegionMap *M = new RegionStoreSubRegionMap();
-
+
llvm::SmallVector<const SubRegion*, 10> WL;
for (RegionBindings::iterator I=B.begin(), E=B.end(); I!=E; ++I)
if (const SubRegion *R = dyn_cast<SubRegion>(I.getKey()))
M->process(WL, R);
-
+
RegionDefaultBindings DVM = state->get<RegionDefaultValue>();
for (RegionDefaultBindings::iterator I = DVM.begin(), E = DVM.end();
- I != E; ++I)
+ I != E; ++I)
if (const SubRegion *R = dyn_cast<SubRegion>(I.getKey()))
M->process(WL, R);
- // We also need to record in the subregion map "intermediate" regions that
+ // We also need to record in the subregion map "intermediate" regions that
// don't have direct bindings but are super regions of those that do.
while (!WL.empty()) {
const SubRegion *R = WL.back();
@@ -423,12 +423,12 @@
RegionDefaultBindings::Factory &DVMFactory,
const MemRegion *R,
RegionStoreSubRegionMap &M) {
-
+
RegionStoreSubRegionMap::iterator I, E;
for (llvm::tie(I, E) = M.begin_end(R); I != E; ++I)
RemoveSubRegionBindings(B, DVM, DVMFactory, *I, M);
-
+
B = RBFactory.Remove(B, R);
DVM = DVMFactory.Remove(DVM, R);
}
@@ -439,48 +439,48 @@
const Expr *E,
unsigned Count) {
ASTContext& Ctx = StateMgr.getContext();
-
+
// Strip away casts.
R = R->getBaseRegion();
// Remove the bindings to subregions.
- {
+ {
// Get the mapping of regions -> subregions.
llvm::OwningPtr<RegionStoreSubRegionMap>
SubRegions(getRegionStoreSubRegionMap(state));
-
+
RegionBindings B = GetRegionBindings(state->getStore());
- RegionDefaultBindings DVM = state->get<RegionDefaultValue>();
+ RegionDefaultBindings DVM = state->get<RegionDefaultValue>();
RegionDefaultBindings::Factory &DVMFactory =
state->get_context<RegionDefaultValue>();
-
- RemoveSubRegionBindings(B, DVM, DVMFactory, R, *SubRegions.get());
+
+ RemoveSubRegionBindings(B, DVM, DVMFactory, R, *SubRegions.get());
state = state->makeWithStore(B.getRoot())->set<RegionDefaultValue>(DVM);
}
if (!R->isBoundable())
return state;
-
+
if (isa<AllocaRegion>(R) || isa<SymbolicRegion>(R) ||
isa<ObjCObjectRegion>(R)) {
- // Invalidate the region by setting its default value to
+ // Invalidate the region by setting its default value to
// conjured symbol. The type of the symbol is irrelavant.
SVal V = ValMgr.getConjuredSymbolVal(E, Ctx.IntTy, Count);
return setDefaultValue(state, R, V);
}
-
+
const TypedRegion *TR = cast<TypedRegion>(R);
QualType T = TR->getValueType(Ctx);
-
+
if (const RecordType *RT = T->getAsStructureType()) {
// FIXME: handle structs with default region value.
const RecordDecl *RD = RT->getDecl()->getDefinition(Ctx);
-
+
// No record definition. There is nothing we can do.
if (!RD)
return state;
-
- // Invalidate the region by setting its default value to
+
+ // Invalidate the region by setting its default value to
// conjured symbol. The type of the symbol is irrelavant.
SVal V = ValMgr.getConjuredSymbolVal(E, Ctx.IntTy, Count);
return setDefaultValue(state, R, V);
@@ -492,7 +492,7 @@
Count);
return setDefaultValue(state, TR, V);
}
-
+
SVal V = ValMgr.getConjuredSymbolVal(E, T, Count);
assert(SymbolManager::canSymbolicate(T) || V.isUnknown());
return Bind(state, ValMgr.makeLoc(TR), V);
@@ -506,7 +506,7 @@
/// StringLiteral. Within RegionStore a StringLiteral has an
/// associated StringRegion, and the lvalue of a StringLiteral is the
/// lvalue of that region.
-SVal RegionStoreManager::getLValueString(const GRState *St,
+SVal RegionStoreManager::getLValueString(const GRState *St,
const StringLiteral* S) {
return loc::MemRegionVal(MRMgr.getStringRegion(S));
}
@@ -525,7 +525,7 @@
/// is the lvalue of that region.
SVal
RegionStoreManager::getLValueCompoundLiteral(const GRState *St,
- const CompoundLiteralExpr* CL) {
+ const CompoundLiteralExpr* CL) {
return loc::MemRegionVal(MRMgr.getCompoundLiteralRegion(CL));
}
@@ -567,7 +567,7 @@
assert(0 && "Unhandled Base.");
return Base;
}
-
+
// NOTE: We must have this check first because ObjCIvarDecl is a subclass
// of FieldDecl.
if (const ObjCIvarDecl *ID = dyn_cast<ObjCIvarDecl>(D))
@@ -595,10 +595,10 @@
// Pointer of any type can be cast and used as array base.
const ElementRegion *ElemR = dyn_cast<ElementRegion>(BaseRegion);
-
+
// Convert the offset to the appropriate size and signedness.
Offset = ValMgr.convertToArrayIndex(Offset);
-
+
if (!ElemR) {
//
// If the base region is not an ElementRegion, create one.
@@ -612,23 +612,23 @@
return loc::MemRegionVal(MRMgr.getElementRegion(elementType, Offset,
BaseRegion, getContext()));
}
-
+
SVal BaseIdx = ElemR->getIndex();
-
+
if (!isa<nonloc::ConcreteInt>(BaseIdx))
return UnknownVal();
-
+
const llvm::APSInt& BaseIdxI = cast<nonloc::ConcreteInt>(BaseIdx).getValue();
const llvm::APSInt& OffI = cast<nonloc::ConcreteInt>(Offset).getValue();
assert(BaseIdxI.isSigned());
-
+
// Compute the new index.
SVal NewIdx = nonloc::ConcreteInt(getBasicVals().getValue(BaseIdxI + OffI));
-
+
// Construct the new ElementRegion.
const MemRegion *ArrayR = ElemR->getSuperRegion();
return loc::MemRegionVal(MRMgr.getElementRegion(elementType, NewIdx, ArrayR,
- getContext()));
+ getContext()));
}
//===----------------------------------------------------------------------===//
@@ -637,12 +637,12 @@
SVal RegionStoreManager::getSizeInElements(const GRState *state,
const MemRegion *R) {
-
+
switch (R->getKind()) {
case MemRegion::MemSpaceRegionKind:
assert(0 && "Cannot index into a MemSpace");
- return UnknownVal();
-
+ return UnknownVal();
+
case MemRegion::CodeTextRegionKind:
// Technically this can happen if people do funny things with casts.
return UnknownVal();
@@ -656,23 +656,23 @@
case MemRegion::ObjCObjectRegionKind:
case MemRegion::SymbolicRegionKind:
return UnknownVal();
-
+
case MemRegion::StringRegionKind: {
const StringLiteral* Str = cast<StringRegion>(R)->getStringLiteral();
- // We intentionally made the size value signed because it participates in
+ // We intentionally made the size value signed because it participates in
// operations with signed indices.
return ValMgr.makeIntVal(Str->getByteLength()+1, false);
}
-
+
case MemRegion::VarRegionKind: {
const VarRegion* VR = cast<VarRegion>(R);
// Get the type of the variable.
QualType T = VR->getDesugaredValueType(getContext());
-
+
// FIXME: Handle variable-length arrays.
if (isa<VariableArrayType>(T))
return UnknownVal();
-
+
if (const ConstantArrayType* CAT = dyn_cast<ConstantArrayType>(T)) {
// return the size as signed integer.
return ValMgr.makeIntVal(CAT->getSize(), false);
@@ -682,7 +682,7 @@
// essentially are arrays of size 1.
return ValMgr.makeIntVal(1, false);
}
-
+
case MemRegion::BEG_DECL_REGIONS:
case MemRegion::END_DECL_REGIONS:
case MemRegion::BEG_TYPED_REGIONS:
@@ -690,7 +690,7 @@
assert(0 && "Infeasible region");
return UnknownVal();
}
-
+
assert(0 && "Unreachable");
return UnknownVal();
}
@@ -714,29 +714,29 @@
SVal RegionStoreManager::ArrayToPointer(Loc Array) {
if (!isa<loc::MemRegionVal>(Array))
return UnknownVal();
-
+
const MemRegion* R = cast<loc::MemRegionVal>(&Array)->getRegion();
const TypedRegion* ArrayR = dyn_cast<TypedRegion>(R);
-
+
if (!ArrayR)
return UnknownVal();
-
+
// Strip off typedefs from the ArrayRegion's ValueType.
QualType T = ArrayR->getValueType(getContext())->getDesugaredType();
ArrayType *AT = cast<ArrayType>(T);
T = AT->getElementType();
-
+
SVal ZeroIdx = ValMgr.makeZeroArrayIndex();
ElementRegion* ER = MRMgr.getElementRegion(T, ZeroIdx, ArrayR, getContext());
-
- return loc::MemRegionVal(ER);
+
+ return loc::MemRegionVal(ER);
}
//===----------------------------------------------------------------------===//
// Pointer arithmetic.
//===----------------------------------------------------------------------===//
-SVal RegionStoreManager::EvalBinOp(const GRState *state,
+SVal RegionStoreManager::EvalBinOp(const GRState *state,
BinaryOperator::Opcode Op, Loc L, NonLoc R,
QualType resultTy) {
// Assume the base location is MemRegionVal.
@@ -752,15 +752,15 @@
SymbolRef Sym = SR->getSymbol();
QualType T = Sym->getType(getContext());
QualType EleTy;
-
+
if (const PointerType *PT = T->getAs<PointerType>())
EleTy = PT->getPointeeType();
else
EleTy = T->getAsObjCObjectPointerType()->getPointeeType();
-
+
SVal ZeroIdx = ValMgr.makeZeroArrayIndex();
ER = MRMgr.getElementRegion(EleTy, ZeroIdx, SR, getContext());
- break;
+ break;
}
case MemRegion::AllocaRegionKind: {
const AllocaRegion *AR = cast<AllocaRegion>(MR);
@@ -768,14 +768,14 @@
QualType EleTy = T->getAs<PointerType>()->getPointeeType();
SVal ZeroIdx = ValMgr.makeZeroArrayIndex();
ER = MRMgr.getElementRegion(EleTy, ZeroIdx, AR, getContext());
- break;
+ break;
}
case MemRegion::ElementRegionKind: {
ER = cast<ElementRegion>(MR);
break;
}
-
+
// Not yet handled.
case MemRegion::VarRegionKind:
case MemRegion::StringRegionKind:
@@ -784,15 +784,15 @@
case MemRegion::ObjCObjectRegionKind:
case MemRegion::ObjCIvarRegionKind:
return UnknownVal();
-
+
case MemRegion::CodeTextRegionKind:
// Technically this can happen if people do funny things with casts.
return UnknownVal();
-
+
case MemRegion::MemSpaceRegionKind:
assert(0 && "Cannot perform pointer arithmetic on a MemSpace");
return UnknownVal();
-
+
case MemRegion::BEG_DECL_REGIONS:
case MemRegion::END_DECL_REGIONS:
case MemRegion::BEG_TYPED_REGIONS:
@@ -815,7 +815,7 @@
getContext());
return ValMgr.makeLoc(NewER);
}
-
+
return UnknownVal();
}
@@ -825,7 +825,7 @@
Optional<SVal> RegionStoreManager::getDefaultBinding(const GRState *state,
const MemRegion *R) {
-
+
if (R->isBoundable())
if (const TypedRegion *TR = dyn_cast<TypedRegion>(R))
if (TR->getValueType(getContext())->isUnionType())
@@ -837,21 +837,21 @@
static bool IsReinterpreted(QualType RTy, QualType UsedTy, ASTContext &Ctx) {
RTy = Ctx.getCanonicalType(RTy);
UsedTy = Ctx.getCanonicalType(UsedTy);
-
+
if (RTy == UsedTy)
return false;
-
-
+
+
// Recursively check the types. We basically want to see if a pointer value
- // is ever reinterpreted as a non-pointer, e.g. void** and intptr_t*
+ // is ever reinterpreted as a non-pointer, e.g. void** and intptr_t*
// represents a reinterpretation.
if (Loc::IsLocType(RTy) && Loc::IsLocType(UsedTy)) {
- const PointerType *PRTy = RTy->getAs<PointerType>();
+ const PointerType *PRTy = RTy->getAs<PointerType>();
const PointerType *PUsedTy = UsedTy->getAs<PointerType>();
return PUsedTy && PRTy &&
IsReinterpreted(PRTy->getPointeeType(),
- PUsedTy->getPointeeType(), Ctx);
+ PUsedTy->getPointeeType(), Ctx);
}
return true;
@@ -878,17 +878,17 @@
// c = *p;
if (isa<AllocaRegion>(MR))
return SValuator::CastResult(state, UnknownVal());
-
+
if (isa<SymbolicRegion>(MR)) {
ASTContext &Ctx = getContext();
SVal idx = ValMgr.makeZeroArrayIndex();
assert(!T.isNull());
MR = MRMgr.getElementRegion(T, idx, MR, Ctx);
}
-
+
if (isa<CodeTextRegion>(MR))
return SValuator::CastResult(state, UnknownVal());
-
+
// FIXME: Perhaps this method should just take a 'const MemRegion*' argument
// instead of 'Loc', and have the other Loc cases handled at a higher level.
const TypedRegion *R = cast<TypedRegion>(MR);
@@ -911,12 +911,12 @@
RTy = T;
assert(Ctx.getCanonicalType(RTy) ==
Ctx.getCanonicalType(R->getValueType(Ctx)));
- }
+ }
#endif
if (RTy->isStructureType())
return SValuator::CastResult(state, RetrieveStruct(state, R));
-
+
// FIXME: Handle unions.
if (RTy->isUnionType())
return SValuator::CastResult(state, UnknownVal());
@@ -933,10 +933,10 @@
if (const ElementRegion* ER = dyn_cast<ElementRegion>(R))
return CastRetrievedVal(RetrieveElement(state, ER), state, ER, T);
-
+
if (const ObjCIvarRegion *IVR = dyn_cast<ObjCIvarRegion>(R))
return CastRetrievedVal(RetrieveObjCIvar(state, IVR), state, IVR, T);
-
+
if (const VarRegion *VR = dyn_cast<VarRegion>(R))
return CastRetrievedVal(RetrieveVar(state, VR), state, VR, T);
@@ -967,26 +967,26 @@
return SValuator::CastResult(state,
ValMgr.getRegionValueSymbolValOrUnknown(R, RTy));
}
-
+
std::pair<const GRState*, const MemRegion*>
RegionStoreManager::GetLazyBinding(RegionBindings B, const MemRegion *R) {
if (const nonloc::LazyCompoundVal *V =
dyn_cast_or_null<nonloc::LazyCompoundVal>(B.lookup(R)))
return std::make_pair(V->getState(), V->getRegion());
-
+
if (const ElementRegion *ER = dyn_cast<ElementRegion>(R)) {
const std::pair<const GRState *, const MemRegion *> &X =
GetLazyBinding(B, ER->getSuperRegion());
-
+
if (X.first)
return std::make_pair(X.first,
MRMgr.getElementRegionWithSuper(ER, X.second));
- }
+ }
else if (const FieldRegion *FR = dyn_cast<FieldRegion>(R)) {
const std::pair<const GRState *, const MemRegion *> &X =
GetLazyBinding(B, FR->getSuperRegion());
-
+
if (X.first)
return std::make_pair(X.first,
MRMgr.getFieldRegionWithSuper(FR, X.second));
@@ -1010,23 +1010,23 @@
SVal Idx = R->getIndex();
if (nonloc::ConcreteInt *CI = dyn_cast<nonloc::ConcreteInt>(&Idx)) {
int64_t i = CI->getValue().getSExtValue();
- int64_t byteLength = Str->getByteLength();
+ int64_t byteLength = Str->getByteLength();
if (i > byteLength) {
// Buffer overflow checking in GRExprEngine should handle this case,
// but we shouldn't rely on it to not overflow here if that checking
// is disabled.
return UnknownVal();
- }
+ }
char c = (i == byteLength) ? '\0' : Str->getStrData()[i];
return ValMgr.makeIntVal(c, getContext().CharTy);
}
}
-
+
// Special case: the current region represents a cast and it and the super
// region both have pointer types or intptr_t types. If so, perform the
// retrieve from the super region and appropriately "cast" the value.
// This is needed to support OSAtomicCompareAndSwap and friends or other
- // loads that treat integers as pointers and vis versa.
+ // loads that treat integers as pointers and vis versa.
if (R->getIndex().isZeroConstant()) {
if (const TypedRegion *superTR = dyn_cast<TypedRegion>(superR)) {
ASTContext &Ctx = getContext();
@@ -1054,21 +1054,21 @@
// Handle LazyCompoundVals for the immediate super region. Other cases
// are handled in 'RetrieveFieldOrElementCommon'.
- if (const nonloc::LazyCompoundVal *LCV =
+ if (const nonloc::LazyCompoundVal *LCV =
dyn_cast<nonloc::LazyCompoundVal>(V)) {
-
+
R = MRMgr.getElementRegionWithSuper(R, LCV->getRegion());
return RetrieveElement(LCV->getState(), R);
}
-
+
// Other cases: give up.
return UnknownVal();
}
-
+
return RetrieveFieldOrElementCommon(state, R, R->getElementType(), superR);
}
-SVal RegionStoreManager::RetrieveField(const GRState* state,
+SVal RegionStoreManager::RetrieveField(const GRState* state,
const FieldRegion* R) {
// Check if the region has a binding.
@@ -1079,76 +1079,76 @@
QualType Ty = R->getValueType(getContext());
return RetrieveFieldOrElementCommon(state, R, Ty, R->getSuperRegion());
}
-
+
SVal RegionStoreManager::RetrieveFieldOrElementCommon(const GRState *state,
const TypedRegion *R,
QualType Ty,
const MemRegion *superR) {
- // At this point we have already checked in either RetrieveElement or
+ // At this point we have already checked in either RetrieveElement or
// RetrieveField if 'R' has a direct binding.
-
+
RegionBindings B = GetRegionBindings(state->getStore());
-
+
while (superR) {
if (const Optional<SVal> &D = getDefaultBinding(state, superR)) {
if (SymbolRef parentSym = D->getAsSymbol())
return ValMgr.getDerivedRegionValueSymbolVal(parentSym, R);
-
+
if (D->isZeroConstant())
return ValMgr.makeZeroVal(Ty);
-
+
if (D->isUnknown())
return *D;
-
+
assert(0 && "Unknown default value");
}
-
+
// If our super region is a field or element itself, walk up the region
// hierarchy to see if there is a default value installed in an ancestor.
if (isa<FieldRegion>(superR) || isa<ElementRegion>(superR)) {
superR = cast<SubRegion>(superR)->getSuperRegion();
continue;
}
-
+
break;
}
-
+
// Lazy binding?
const GRState *lazyBindingState = NULL;
const MemRegion *lazyBindingRegion = NULL;
llvm::tie(lazyBindingState, lazyBindingRegion) = GetLazyBinding(B, R);
-
+
if (lazyBindingState) {
assert(lazyBindingRegion && "Lazy-binding region not set");
-
+
if (isa<ElementRegion>(R))
return RetrieveElement(lazyBindingState,
cast<ElementRegion>(lazyBindingRegion));
-
+
return RetrieveField(lazyBindingState,
cast<FieldRegion>(lazyBindingRegion));
- }
-
+ }
+
if (R->hasStackStorage() && !R->hasParametersStorage()) {
-
+
if (isa<ElementRegion>(R)) {
// Currently we don't reason specially about Clang-style vectors. Check
// if superR is a vector and if so return Unknown.
if (const TypedRegion *typedSuperR = dyn_cast<TypedRegion>(superR)) {
if (typedSuperR->getValueType(getContext())->isVectorType())
return UnknownVal();
- }
+ }
}
-
+
return UndefinedVal();
}
-
+
// All other values are symbolic.
return ValMgr.getRegionValueSymbolValOrUnknown(R, Ty);
}
-
-SVal RegionStoreManager::RetrieveObjCIvar(const GRState* state,
+
+SVal RegionStoreManager::RetrieveObjCIvar(const GRState* state,
const ObjCIvarRegion* R) {
// Check if the region has a binding.
@@ -1156,50 +1156,50 @@
if (const SVal* V = B.lookup(R))
return *V;
-
+
const MemRegion *superR = R->getSuperRegion();
// Check if the super region has a binding.
if (const SVal *V = B.lookup(superR)) {
if (SymbolRef parentSym = V->getAsSymbol())
return ValMgr.getDerivedRegionValueSymbolVal(parentSym, R);
-
+
// Other cases: give up.
return UnknownVal();
}
-
+
return RetrieveLazySymbol(state, R);
}
SVal RegionStoreManager::RetrieveVar(const GRState *state,
const VarRegion *R) {
-
+
// Check if the region has a binding.
RegionBindings B = GetRegionBindings(state->getStore());
-
+
if (const SVal* V = B.lookup(R))
return *V;
-
+
// Lazily derive a value for the VarRegion.
const VarDecl *VD = R->getDecl();
-
+
if (R->hasGlobalsOrParametersStorage())
return ValMgr.getRegionValueSymbolValOrUnknown(R, VD->getType());
-
+
return UndefinedVal();
}
-SVal RegionStoreManager::RetrieveLazySymbol(const GRState *state,
+SVal RegionStoreManager::RetrieveLazySymbol(const GRState *state,
const TypedRegion *R) {
-
+
QualType valTy = R->getValueType(getContext());
// All other values are symbolic.
return ValMgr.getRegionValueSymbolValOrUnknown(R, valTy);
}
-SVal RegionStoreManager::RetrieveStruct(const GRState *state,
- const TypedRegion* R){
+SVal RegionStoreManager::RetrieveStruct(const GRState *state,
+ const TypedRegion* R) {
QualType T = R->getValueType(getContext());
assert(T->isStructureType());
@@ -1240,7 +1240,7 @@
for (uint64_t i = 0; i < size; ++i) {
SVal Idx = ValMgr.makeArrayIndex(i);
ElementRegion* ER = MRMgr.getElementRegion(CAT->getElementType(), Idx, R,
- getContext());
+ getContext());
QualType ETy = ER->getElementType();
SVal ElementVal = Retrieve(state, loc::MemRegionVal(ER), ETy).getSVal();
ArrayVal = getBasicVals().consVals(ElementVal, ArrayVal);
@@ -1259,15 +1259,15 @@
Store RegionStoreManager::Remove(Store store, Loc L) {
const MemRegion* R = 0;
-
+
if (isa<loc::MemRegionVal>(L))
R = cast<loc::MemRegionVal>(L).getRegion();
-
+
if (R) {
- RegionBindings B = GetRegionBindings(store);
+ RegionBindings B = GetRegionBindings(store);
return RBFactory.Remove(B, R).getRoot();
}
-
+
return store;
}
@@ -1277,17 +1277,17 @@
// If we get here, the location should be a region.
const MemRegion *R = cast<loc::MemRegionVal>(L).getRegion();
-
+
// Check if the region is a struct region.
if (const TypedRegion* TR = dyn_cast<TypedRegion>(R))
if (TR->getValueType(getContext())->isStructureType())
return BindStruct(state, TR, V);
-
+
// Special case: the current region represents a cast and it and the super
// region both have pointer types or intptr_t types. If so, perform the
// bind to the super region.
// This is needed to support OSAtomicCompareAndSwap and friends or other
- // loads that treat integers as pointers and vis versa.
+ // loads that treat integers as pointers and vis versa.
if (const ElementRegion *ER = dyn_cast<ElementRegion>(R)) {
if (ER->getIndex().isZeroConstant()) {
if (const TypedRegion *superR =
@@ -1295,17 +1295,17 @@
ASTContext &Ctx = getContext();
QualType superTy = superR->getValueType(Ctx);
QualType erTy = ER->getValueType(Ctx);
-
- if (IsAnyPointerOrIntptr(superTy, Ctx) &&
+
+ if (IsAnyPointerOrIntptr(superTy, Ctx) &&
IsAnyPointerOrIntptr(erTy, Ctx)) {
- SValuator::CastResult cr =
- ValMgr.getSValuator().EvalCast(V, state, superTy, erTy);
+ SValuator::CastResult cr =
+ ValMgr.getSValuator().EvalCast(V, state, superTy, erTy);
return Bind(cr.getState(), loc::MemRegionVal(superR), cr.getSVal());
}
}
}
}
-
+
// Perform the binding.
RegionBindings B = GetRegionBindings(state->getStore());
return state->makeWithStore(RBFactory.Add(B, R, V).getRoot());
@@ -1332,7 +1332,7 @@
RegionStoreManager::BindCompoundLiteral(const GRState *state,
const CompoundLiteralExpr* CL,
SVal V) {
-
+
CompoundLiteralRegion* R = MRMgr.getCompoundLiteralRegion(CL);
return Bind(state, loc::MemRegionVal(R), V);
}
@@ -1376,12 +1376,12 @@
// Handle lazy compound values.
if (nonloc::LazyCompoundVal *LCV = dyn_cast<nonloc::LazyCompoundVal>(&Init))
return CopyLazyBindings(*LCV, state, R);
-
- // Remaining case: explicit compound values.
+
+ // Remaining case: explicit compound values.
nonloc::CompoundVal& CV = cast<nonloc::CompoundVal>(Init);
nonloc::CompoundVal::iterator VI = CV.begin(), VE = CV.end();
uint64_t i = 0;
-
+
for (; i < size; ++i, ++VI) {
// The init list might be shorter than the array length.
if (VI == VE)
@@ -1411,10 +1411,10 @@
const GRState *
RegionStoreManager::BindStruct(const GRState *state, const TypedRegion* R,
SVal V) {
-
+
if (!Features.supportsFields())
return state;
-
+
QualType T = R->getValueType(getContext());
assert(T->isStructureType());
@@ -1427,7 +1427,7 @@
// Handle lazy compound values.
if (const nonloc::LazyCompoundVal *LCV = dyn_cast<nonloc::LazyCompoundVal>(&V))
return CopyLazyBindings(*LCV, state, R);
-
+
// We may get non-CompoundVal accidentally due to imprecise cast logic.
// Ignore them and kill the field values.
if (V.isUnknown() || !isa<nonloc::CompoundVal>(V))
@@ -1447,7 +1447,7 @@
FieldRegion* FR = MRMgr.getFieldRegion(*FI, R);
if (Loc::IsLocType(FTy) || FTy->isIntegerType())
- state = Bind(state, ValMgr.makeLoc(FR), *VI);
+ state = Bind(state, ValMgr.makeLoc(FR), *VI);
else if (FTy->isArrayType())
state = BindArray(state, FR, *VI);
else if (FTy->isStructureType())
@@ -1484,7 +1484,7 @@
const MemRegion* R, SVal V) {
return state->set<RegionDefaultValue>(R, V);
}
-
+
const GRState*
RegionStoreManager::CopyLazyBindings(nonloc::LazyCompoundVal V,
const GRState *state,
@@ -1496,46 +1496,46 @@
RegionDefaultBindings::Factory &DVMFactory =
state->get_context<RegionDefaultValue>();
- llvm::OwningPtr<RegionStoreSubRegionMap>
+ llvm::OwningPtr<RegionStoreSubRegionMap>
SubRegions(getRegionStoreSubRegionMap(state));
- // B and DVM are updated after the call to RemoveSubRegionBindings.
+ // B and DVM are updated after the call to RemoveSubRegionBindings.
RemoveSubRegionBindings(B, DVM, DVMFactory, R, *SubRegions.get());
-
+
// Now copy the bindings. This amounts to just binding 'V' to 'R'. This
// results in a zero-copy algorithm.
return state->makeWithStore(RBFactory.Add(B, R, V).getRoot());
}
-
+
//===----------------------------------------------------------------------===//
// State pruning.
//===----------------------------------------------------------------------===//
-
+
static void UpdateLiveSymbols(SVal X, SymbolReaper& SymReaper) {
if (loc::MemRegionVal *XR = dyn_cast<loc::MemRegionVal>(&X)) {
const MemRegion *R = XR->getRegion();
-
+
while (R) {
if (const SymbolicRegion *SR = dyn_cast<SymbolicRegion>(R)) {
SymReaper.markLive(SR->getSymbol());
return;
}
-
+
if (const SubRegion *SR = dyn_cast<SubRegion>(R)) {
R = SR->getSuperRegion();
continue;
}
-
+
break;
}
-
+
return;
}
-
+
for (SVal::symbol_iterator SI=X.symbol_begin(), SE=X.symbol_end();SI!=SE;++SI)
SymReaper.markLive(*SI);
}
-
+
namespace {
class VISIBILITY_HIDDEN TreeScanner {
RegionBindings B;
@@ -1558,71 +1558,71 @@
: B(b), DB(db), SymReaper(symReaper), Marked(marked),
ScannedLazyVals(scannedLazyVals), M(m),
RS(rs), RegionRoots(regionRoots), MarkKeys(markKeys) {}
-
+
void scanTree(const MemRegion *R);
};
} // end anonymous namespace
-
-
+
+
void TreeScanner::scanTree(const MemRegion *R) {
if (MarkKeys) {
if (Marked.count(R))
- return;
-
+ return;
+
Marked.insert(R);
}
-
+
// Mark the symbol for any live SymbolicRegion as "live". This means we
// should continue to track that symbol.
if (const SymbolicRegion* SymR = dyn_cast<SymbolicRegion>(R))
SymReaper.markLive(SymR->getSymbol());
-
+
// Get the data binding for R (if any).
const SVal* Xptr = B.lookup(R);
-
+
// Check for lazy bindings.
if (const nonloc::LazyCompoundVal *V =
dyn_cast_or_null<nonloc::LazyCompoundVal>(Xptr)) {
-
- const LazyCompoundValData *D = V->getCVData();
+
+ const LazyCompoundValData *D = V->getCVData();
if (!ScannedLazyVals.count(D)) {
// Scan the bindings in the LazyCompoundVal.
ScannedLazyVals.insert(D);
-
+
// FIXME: Cache subregion maps.
const GRState *lazyState = D->getState();
llvm::OwningPtr<RegionStoreSubRegionMap>
lazySM(RS.getRegionStoreSubRegionMap(lazyState));
-
+
Store lazyStore = lazyState->getStore();
RegionBindings lazyB = RS.GetRegionBindings(lazyStore);
-
+
RegionDefaultBindings lazyDB = lazyState->get<RegionDefaultValue>();
-
+
// Scan the bindings.
TreeScanner scan(lazyB, lazyDB, SymReaper, Marked, ScannedLazyVals,
*lazySM.get(), RS, RegionRoots, false);
-
+
scan.scanTree(D->getRegion());
}
}
- else {
- // No direct binding? Get the default binding for R (if any).
+ else {
+ // No direct binding? Get the default binding for R (if any).
if (!Xptr)
Xptr = DB.lookup(R);
-
+
// Direct or default binding?
if (Xptr) {
SVal X = *Xptr;
UpdateLiveSymbols(X, SymReaper); // Update the set of live symbols.
-
+
// If X is a region, then add it to the RegionRoots.
if (const MemRegion *RX = X.getAsRegion()) {
RegionRoots.push_back(RX);
// Mark the super region of the RX as live.
- // e.g.: int x; char *y = (char*) &x; if (*y) ...
+ // e.g.: int x; char *y = (char*) &x; if (*y) ...
// 'y' => element region. 'x' is its super region.
if (const SubRegion *SR = dyn_cast<SubRegion>(RX)) {
RegionRoots.push_back(SR->getSuperRegion());
@@ -1630,39 +1630,39 @@
}
}
}
-
- RegionStoreSubRegionMap::iterator I, E;
+
+ RegionStoreSubRegionMap::iterator I, E;
for (llvm::tie(I, E) = M.begin_end(R); I != E; ++I)
scanTree(*I);
}
-void RegionStoreManager::RemoveDeadBindings(GRState &state, Stmt* Loc,
+void RegionStoreManager::RemoveDeadBindings(GRState &state, Stmt* Loc,
SymbolReaper& SymReaper,
llvm::SmallVectorImpl<const MemRegion*>& RegionRoots)
-{
+{
Store store = state.getStore();
RegionBindings B = GetRegionBindings(store);
-
+
// Lazily constructed backmap from MemRegions to SubRegions.
typedef llvm::ImmutableSet<const MemRegion*> SubRegionsTy;
typedef llvm::ImmutableMap<const MemRegion*, SubRegionsTy> SubRegionsMapTy;
-
+
// The backmap from regions to subregions.
llvm::OwningPtr<RegionStoreSubRegionMap>
SubRegions(getRegionStoreSubRegionMap(&state));
-
+
// Do a pass over the regions in the store. For VarRegions we check if
// the variable is still live and if so add it to the list of live roots.
- // For other regions we populate our region backmap.
+ // For other regions we populate our region backmap.
llvm::SmallVector<const MemRegion*, 10> IntermediateRoots;
-
+
// Scan the direct bindings for "intermediate" roots.
for (RegionBindings::iterator I = B.begin(), E = B.end(); I != E; ++I) {
const MemRegion *R = I.getKey();
IntermediateRoots.push_back(R);
}
-
+
// Scan the default bindings for "intermediate" roots.
RegionDefaultBindings DVM = state.get<RegionDefaultValue>();
for (RegionDefaultBindings::iterator I = DVM.begin(), E = DVM.end();
@@ -1672,18 +1672,18 @@
}
// Process the "intermediate" roots to find if they are referenced by
- // real roots.
+ // real roots.
while (!IntermediateRoots.empty()) {
const MemRegion* R = IntermediateRoots.back();
IntermediateRoots.pop_back();
-
+
if (const VarRegion* VR = dyn_cast<VarRegion>(R)) {
if (SymReaper.isLive(Loc, VR->getDecl())) {
RegionRoots.push_back(VR); // This is a live "root".
}
continue;
}
-
+
if (const SymbolicRegion* SR = dyn_cast<SymbolicRegion>(R)) {
if (SymReaper.isLive(SR->getSymbol()))
RegionRoots.push_back(SR);
@@ -1695,9 +1695,9 @@
dyn_cast<SubRegion>(cast<SubRegion>(R)->getSuperRegion()))
IntermediateRoots.push_back(superR);
}
-
+
// Process the worklist of RegionRoots. This performs a "mark-and-sweep"
- // of the store. We want to find all live symbols and dead regions.
+ // of the store. We want to find all live symbols and dead regions.
llvm::DenseSet<const MemRegion*> Marked;
llvm::DenseSet<const LazyCompoundValData*> LazyVals;
TreeScanner TS(B, DVM, SymReaper, Marked, LazyVals, *SubRegions.get(),
@@ -1707,59 +1707,59 @@
const MemRegion *R = RegionRoots.back();
RegionRoots.pop_back();
TS.scanTree(R);
- }
-
+ }
+
// We have now scanned the store, marking reachable regions and symbols
// as live. We now remove all the regions that are dead from the store
- // as well as update DSymbols with the set symbols that are now dead.
+ // as well as update DSymbols with the set symbols that are now dead.
for (RegionBindings::iterator I = B.begin(), E = B.end(); I != E; ++I) {
const MemRegion* R = I.getKey();
// If this region live? Is so, none of its symbols are dead.
if (Marked.count(R))
continue;
-
+
// Remove this dead region from the store.
store = Remove(store, ValMgr.makeLoc(R));
-
+
// Mark all non-live symbols that this region references as dead.
if (const SymbolicRegion* SymR = dyn_cast<SymbolicRegion>(R))
SymReaper.maybeDead(SymR->getSymbol());
-
+
SVal X = I.getData();
SVal::symbol_iterator SI = X.symbol_begin(), SE = X.symbol_end();
for (; SI != SE; ++SI)
SymReaper.maybeDead(*SI);
}
-
- // Remove dead 'default' bindings.
+
+ // Remove dead 'default' bindings.
RegionDefaultBindings NewDVM = DVM;
- RegionDefaultBindings::Factory &DVMFactory =
+ RegionDefaultBindings::Factory &DVMFactory =
state.get_context<RegionDefaultValue>();
-
+
for (RegionDefaultBindings::iterator I = DVM.begin(), E = DVM.end();
I != E; ++I) {
const MemRegion *R = I.getKey();
-
+
// If this region live? Is so, none of its symbols are dead.
if (Marked.count(R))
continue;
-
+
// Remove this dead region.
NewDVM = DVMFactory.Remove(NewDVM, R);
-
+
// Mark all non-live symbols that this region references as dead.
if (const SymbolicRegion* SymR = dyn_cast<SymbolicRegion>(R))
SymReaper.maybeDead(SymR->getSymbol());
-
+
SVal X = I.getData();
SVal::symbol_iterator SI = X.symbol_begin(), SE = X.symbol_end();
for (; SI != SE; ++SI)
SymReaper.maybeDead(*SI);
}
-
+
// Write the store back.
state.setStore(store);
-
+
// Write the updated default bindings back.
// FIXME: Right now this involves a fetching of a persistent state.
// We can do better.
@@ -1775,7 +1775,7 @@
const char* nl, const char *sep) {
RegionBindings B = GetRegionBindings(store);
OS << "Store (direct bindings):" << nl;
-
+
for (RegionBindings::iterator I = B.begin(), E = B.end(); I != E; ++I)
- OS << ' ' << I.getKey() << " : " << I.getData() << nl;
+ OS << ' ' << I.getKey() << " : " << I.getData() << nl;
}