[cfe-commits] r70830 - in /cfe/trunk: include/clang/Analysis/PathSensitive/GRState.h include/clang/Analysis/PathSensitive/MemRegion.h include/clang/Analysis/PathSensitive/Store.h lib/Analysis/BasicStore.cpp lib/Analysis/GRExprEngine.cpp lib/Analysis/MemRegion.cpp lib/Analysis/RegionStore.cpp test/Analysis/array-struct.c test/Analysis/misc-ps.m
Ted Kremenek
kremenek at apple.com
Sun May 3 23:18:28 PDT 2009
Author: kremenek
Date: Mon May 4 01:18:28 2009
New Revision: 70830
URL: http://llvm.org/viewvc/llvm-project?rev=70830&view=rev
Log:
Per conversations with Zhongxing, add an 'element type' to
ElementRegion. I also removed 'ElementRegion::getArrayRegion',
although we may need to add this back.
This breaks a few test cases with RegionStore:
- 'array-struct.c' triggers an infinite recursion in RegionStoreManager. Need to investigate.
- misc-ps.m triggers a failure with RegionStoreManager as we now get the diagnostic:
'Line 159: Uninitialized or undefined return value returned to caller.'
There were a bunch of places that needed to be edit
RegionStoreManager, and we may not be passing all the correct 'element
types' down from GRExprEngine.
Zhongxing: When you get a chance, could you review this? I could have
easily screwed up something basic in RegionStoreManager.
Modified:
cfe/trunk/include/clang/Analysis/PathSensitive/GRState.h
cfe/trunk/include/clang/Analysis/PathSensitive/MemRegion.h
cfe/trunk/include/clang/Analysis/PathSensitive/Store.h
cfe/trunk/lib/Analysis/BasicStore.cpp
cfe/trunk/lib/Analysis/GRExprEngine.cpp
cfe/trunk/lib/Analysis/MemRegion.cpp
cfe/trunk/lib/Analysis/RegionStore.cpp
cfe/trunk/test/Analysis/array-struct.c
cfe/trunk/test/Analysis/misc-ps.m
Modified: cfe/trunk/include/clang/Analysis/PathSensitive/GRState.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Analysis/PathSensitive/GRState.h?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/include/clang/Analysis/PathSensitive/GRState.h (original)
+++ cfe/trunk/include/clang/Analysis/PathSensitive/GRState.h Mon May 4 01:18:28 2009
@@ -416,8 +416,8 @@
}
// Get the lvalue for an array index.
- SVal GetLValue(const GRState* St, SVal Base, SVal Idx) {
- return StoreMgr->getLValueElement(St, Base, Idx);
+ SVal GetLValue(const GRState* St, QualType ElementType, SVal Base, SVal Idx) {
+ return StoreMgr->getLValueElement(St, ElementType, Base, Idx);
}
// Methods that query & manipulate the Environment.
Modified: cfe/trunk/include/clang/Analysis/PathSensitive/MemRegion.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Analysis/PathSensitive/MemRegion.h?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/include/clang/Analysis/PathSensitive/MemRegion.h (original)
+++ cfe/trunk/include/clang/Analysis/PathSensitive/MemRegion.h Mon May 4 01:18:28 2009
@@ -495,29 +495,30 @@
class ElementRegion : public TypedRegion {
friend class MemRegionManager;
+ QualType ElementType;
SVal Index;
- ElementRegion(SVal Idx, const MemRegion* sReg)
- : TypedRegion(sReg, ElementRegionKind), Index(Idx) {
+ ElementRegion(QualType elementType, SVal Idx, const MemRegion* sReg)
+ : TypedRegion(sReg, ElementRegionKind),
+ ElementType(elementType), Index(Idx) {
assert((!isa<nonloc::ConcreteInt>(&Idx) ||
cast<nonloc::ConcreteInt>(&Idx)->getValue().isSigned()) &&
"The index must be signed");
}
- static void ProfileRegion(llvm::FoldingSetNodeID& ID, SVal Idx,
- const MemRegion* superRegion);
+ static void ProfileRegion(llvm::FoldingSetNodeID& ID, QualType elementType,
+ SVal Idx, const MemRegion* superRegion);
public:
SVal getIndex() const { return Index; }
- QualType getRValueType(ASTContext&) const;
-
- /// getArrayRegion - Return the region of the enclosing array. This is
- /// the same as getSuperRegion() except that this returns a TypedRegion*
- /// instead of a MemRegion*.
- const TypedRegion* getArrayRegion() const {
- return cast<TypedRegion>(getSuperRegion());
+ QualType getRValueType(ASTContext&) const {
+ return ElementType;
+ }
+
+ QualType getElementType() const {
+ return ElementType;
}
void print(llvm::raw_ostream& os) const;
@@ -615,7 +616,10 @@
/// a specified VarDecl.
VarRegion* getVarRegion(const VarDecl* vd);
- ElementRegion* getElementRegion(SVal Idx, const TypedRegion* superRegion);
+ /// getElementRegion - Retrieve the memory region associated with the
+ /// associated element type, index, and super region.
+ ElementRegion* getElementRegion(QualType elementType, SVal Idx,
+ const TypedRegion* superRegion);
/// getFieldRegion - Retrieve or create the memory region associated with
/// a specified FieldDecl. 'superRegion' corresponds to the containing
Modified: cfe/trunk/include/clang/Analysis/PathSensitive/Store.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Analysis/PathSensitive/Store.h?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/include/clang/Analysis/PathSensitive/Store.h (original)
+++ cfe/trunk/include/clang/Analysis/PathSensitive/Store.h Mon May 4 01:18:28 2009
@@ -109,7 +109,8 @@
virtual SVal getLValueField(const GRState* St, SVal Base,
const FieldDecl* D) = 0;
- virtual SVal getLValueElement(const GRState* St, SVal Base, SVal Offset) = 0;
+ virtual SVal getLValueElement(const GRState* St, QualType elementType,
+ SVal Base, SVal Offset) = 0;
virtual SVal getSizeInElements(const GRState* St, const MemRegion* R) {
return UnknownVal();
Modified: cfe/trunk/lib/Analysis/BasicStore.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Analysis/BasicStore.cpp?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/lib/Analysis/BasicStore.cpp (original)
+++ cfe/trunk/lib/Analysis/BasicStore.cpp Mon May 4 01:18:28 2009
@@ -79,7 +79,8 @@
const CompoundLiteralExpr* CL);
SVal getLValueIvar(const GRState* St, const ObjCIvarDecl* D, SVal Base);
SVal getLValueField(const GRState* St, SVal Base, const FieldDecl* D);
- SVal getLValueElement(const GRState* St, SVal Base, SVal Offset);
+ SVal getLValueElement(const GRState* St, QualType elementType,
+ SVal Base, SVal Offset);
/// ArrayToPointer - Used by GRExprEngine::VistCast to handle implicit
/// conversions between arrays and pointers.
@@ -193,8 +194,9 @@
return Loc::MakeVal(MRMgr.getFieldRegion(D, BaseR));
}
-SVal BasicStoreManager::getLValueElement(const GRState* St, SVal Base,
- SVal Offset) {
+SVal BasicStoreManager::getLValueElement(const GRState* St,
+ QualType elementType,
+ SVal Base, SVal Offset) {
if (Base.isUnknownOrUndef())
return Base;
@@ -246,7 +248,8 @@
}
if (BaseR)
- return Loc::MakeVal(MRMgr.getElementRegion(UnknownVal(), BaseR));
+ return Loc::MakeVal(MRMgr.getElementRegion(elementType, UnknownVal(),
+ BaseR));
else
return UnknownVal();
}
Modified: cfe/trunk/lib/Analysis/GRExprEngine.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Analysis/GRExprEngine.cpp?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/lib/Analysis/GRExprEngine.cpp (original)
+++ cfe/trunk/lib/Analysis/GRExprEngine.cpp Mon May 4 01:18:28 2009
@@ -1011,7 +1011,8 @@
for (NodeSet::iterator I2=Tmp2.begin(), E2=Tmp2.end(); I2!=E2; ++I2) {
const GRState* state = GetState(*I2);
- SVal V = StateMgr.GetLValue(state, GetSVal(state, Base),
+ SVal V = StateMgr.GetLValue(state, A->getType(),
+ GetSVal(state, Base),
GetSVal(state, Idx));
if (asLValue)
Modified: cfe/trunk/lib/Analysis/MemRegion.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Analysis/MemRegion.cpp?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/lib/Analysis/MemRegion.cpp (original)
+++ cfe/trunk/lib/Analysis/MemRegion.cpp Mon May 4 01:18:28 2009
@@ -96,15 +96,17 @@
SymbolicRegion::ProfileRegion(ID, sym);
}
-void ElementRegion::ProfileRegion(llvm::FoldingSetNodeID& ID, SVal Idx,
+void ElementRegion::ProfileRegion(llvm::FoldingSetNodeID& ID,
+ QualType ElementType, SVal Idx,
const MemRegion* superRegion) {
ID.AddInteger(MemRegion::ElementRegionKind);
+ ID.Add(ElementType);
ID.AddPointer(superRegion);
Idx.Profile(ID);
}
void ElementRegion::Profile(llvm::FoldingSetNodeID& ID) const {
- ElementRegion::ProfileRegion(ID, Index, superRegion);
+ ElementRegion::ProfileRegion(ID, ElementType, Index, superRegion);
}
void CodeTextRegion::ProfileRegion(llvm::FoldingSetNodeID& ID, const void* data,
@@ -122,18 +124,6 @@
// getLValueType() and getRValueType()
//===----------------------------------------------------------------------===//
-QualType ElementRegion::getRValueType(ASTContext& C) const {
- // Strip off typedefs from the ArrayRegion's RvalueType.
- QualType T = getArrayRegion()->getRValueType(C)->getDesugaredType();
-
- if (ArrayType* AT = dyn_cast<ArrayType>(T.getTypePtr()))
- return AT->getElementType();
-
- // If the RValueType of the array region isn't an ArrayType, then essentially
- // the element's
- return T;
-}
-
QualType StringRegion::getRValueType(ASTContext& C) const {
return Str->getType();
}
@@ -313,10 +303,11 @@
}
ElementRegion*
-MemRegionManager::getElementRegion(SVal Idx, const TypedRegion* superRegion){
+MemRegionManager::getElementRegion(QualType elementType, SVal Idx,
+ const TypedRegion* superRegion){
llvm::FoldingSetNodeID ID;
- ElementRegion::ProfileRegion(ID, Idx, superRegion);
+ ElementRegion::ProfileRegion(ID, elementType, Idx, superRegion);
void* InsertPos;
MemRegion* data = Regions.FindNodeOrInsertPos(ID, InsertPos);
@@ -324,7 +315,7 @@
if (!R) {
R = (ElementRegion*) A.Allocate<ElementRegion>();
- new (R) ElementRegion(Idx, superRegion);
+ new (R) ElementRegion(elementType, Idx, superRegion);
Regions.InsertNode(R, InsertPos);
}
Modified: cfe/trunk/lib/Analysis/RegionStore.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Analysis/RegionStore.cpp?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/lib/Analysis/RegionStore.cpp (original)
+++ cfe/trunk/lib/Analysis/RegionStore.cpp Mon May 4 01:18:28 2009
@@ -186,7 +186,8 @@
SVal getLValueFieldOrIvar(const GRState* St, SVal Base, const Decl* D);
- SVal getLValueElement(const GRState* St, SVal Base, SVal Offset);
+ SVal getLValueElement(const GRState* St, QualType elementType,
+ SVal Base, SVal Offset);
SVal getSizeInElements(const GRState* St, const MemRegion* R);
@@ -383,7 +384,8 @@
return loc::MemRegionVal(MRMgr.getFieldRegion(cast<FieldDecl>(D), BaseR));
}
-SVal RegionStoreManager::getLValueElement(const GRState* St,
+SVal RegionStoreManager::getLValueElement(const GRState* St,
+ QualType elementType,
SVal Base, SVal Offset) {
// If the base is an unknown or undefined value, just return it back.
@@ -430,7 +432,8 @@
Offset = NonLoc::MakeVal(getBasicVals(), Tmp);
}
}
- return loc::MemRegionVal(MRMgr.getElementRegion(Offset, BaseRegion));
+ return loc::MemRegionVal(MRMgr.getElementRegion(elementType, Offset,
+ BaseRegion));
}
SVal BaseIdx = ElemR->getIndex();
@@ -447,7 +450,7 @@
// can't we need to put a comment here. If it can, we should handle it.
assert(BaseIdxI.getBitWidth() >= OffI.getBitWidth());
- const TypedRegion *ArrayR = ElemR->getArrayRegion();
+ const TypedRegion *ArrayR = cast<TypedRegion>(ElemR->getSuperRegion());
SVal NewIdx;
if (OffI.isUnsigned() || OffI.getBitWidth() < BaseIdxI.getBitWidth()) {
@@ -465,7 +468,7 @@
else
NewIdx = nonloc::ConcreteInt(getBasicVals().getValue(BaseIdxI + OffI));
- return loc::MemRegionVal(MRMgr.getElementRegion(NewIdx, ArrayR));
+ return loc::MemRegionVal(MRMgr.getElementRegion(elementType, NewIdx, ArrayR));
}
SVal RegionStoreManager::getSizeInElements(const GRState* St,
@@ -568,8 +571,13 @@
if (!ArrayR)
return UnknownVal();
+ // Strip off typedefs from the ArrayRegion's RvalueType.
+ QualType T = ArrayR->getRValueType(getContext())->getDesugaredType();
+ ArrayType *AT = cast<ArrayType>(T);
+ T = AT->getElementType();
+
nonloc::ConcreteInt Idx(getBasicVals().getZeroWithPtrWidth(false));
- ElementRegion* ER = MRMgr.getElementRegion(Idx, ArrayR);
+ ElementRegion* ER = MRMgr.getElementRegion(T, Idx, ArrayR);
return loc::MemRegionVal(ER);
}
@@ -584,7 +592,6 @@
return UnknownVal();
const TypedRegion* TR = cast<TypedRegion>(MR);
-
const ElementRegion* ER = dyn_cast<ElementRegion>(TR);
if (!ER) {
@@ -594,7 +601,7 @@
// p += 3;
// Note that p binds to a TypedViewRegion(SymbolicRegion).
nonloc::ConcreteInt Idx(getBasicVals().getZeroWithPtrWidth(false));
- ER = MRMgr.getElementRegion(Idx, TR);
+ ER = MRMgr.getElementRegion(TR->getRValueType(getContext()), Idx, TR);
}
SVal Idx = ER->getIndex();
@@ -613,8 +620,9 @@
nonloc::ConcreteInt OffConverted(getBasicVals().Convert(Base->getValue(),
Offset->getValue()));
SVal NewIdx = Base->EvalBinOp(getBasicVals(), Op, OffConverted);
- const MemRegion* NewER = MRMgr.getElementRegion(NewIdx,
- ER->getArrayRegion());
+ const MemRegion* NewER =
+ MRMgr.getElementRegion(ER->getElementType(), NewIdx,
+ cast<TypedRegion>(ER->getSuperRegion()));
return Loc::MakeVal(NewER);
}
@@ -769,15 +777,15 @@
ConstantArrayType* CAT = cast<ConstantArrayType>(T.getTypePtr());
llvm::ImmutableList<SVal> ArrayVal = getBasicVals().getEmptySValList();
-
llvm::APSInt Size(CAT->getSize(), false);
llvm::APSInt i = getBasicVals().getValue(0, Size.getBitWidth(),
Size.isUnsigned());
for (; i < Size; ++i) {
SVal Idx = NonLoc::MakeVal(getBasicVals(), i);
- ElementRegion* ER = MRMgr.getElementRegion(Idx, R);
- QualType ETy = ER->getRValueType(getContext());
+ ElementRegion* ER = MRMgr.getElementRegion(R->getRValueType(getContext()),
+ Idx, R);
+ QualType ETy = ER->getElementType();
SVal ElementVal = Retrieve(St, loc::MemRegionVal(ER), ETy);
ArrayVal = getBasicVals().consVals(ElementVal, ArrayVal);
}
@@ -1059,7 +1067,9 @@
break;
SVal Idx = NonLoc::MakeVal(getBasicVals(), i);
- ElementRegion* ER = MRMgr.getElementRegion(Idx, R);
+ ElementRegion* ER =
+ MRMgr.getElementRegion(cast<ArrayType>(T)->getElementType(),
+ Idx, R);
SVal V = NonLoc::MakeVal(getBasicVals(), str[j], sizeof(char)*8, true);
St = Bind(St, loc::MemRegionVal(ER), V);
@@ -1068,9 +1078,7 @@
return St;
}
-
nonloc::CompoundVal& CV = cast<nonloc::CompoundVal>(Init);
-
nonloc::CompoundVal::iterator VI = CV.begin(), VE = CV.end();
for (; i < Size; ++i, ++VI) {
@@ -1079,7 +1087,9 @@
break;
SVal Idx = NonLoc::MakeVal(getBasicVals(), i);
- ElementRegion* ER = MRMgr.getElementRegion(Idx, R);
+ ElementRegion* ER =
+ MRMgr.getElementRegion(cast<ArrayType>(T)->getElementType(),
+ Idx, R);
if (CAT->getElementType()->isStructureType())
St = BindStruct(St, ER, *VI);
Modified: cfe/trunk/test/Analysis/array-struct.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/array-struct.c?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/array-struct.c (original)
+++ cfe/trunk/test/Analysis/array-struct.c Mon May 4 01:18:28 2009
@@ -1,8 +1,10 @@
// RUN: clang-cc -analyze -checker-simple -analyzer-store=basic -analyzer-constraints=basic -verify %s &&
// RUN: clang-cc -analyze -checker-cfref -analyzer-store=basic -analyzer-constraints=basic -verify %s &&
-// RUN: clang-cc -analyze -checker-cfref -analyzer-store=basic -analyzer-constraints=range -verify %s &&
-// RUN: clang-cc -analyze -checker-cfref -analyzer-store=region -analyzer-constraints=basic -verify %s &&
-// RUN: clang-cc -analyze -checker-cfref -analyzer-store=region -analyzer-constraints=range -verify %s
+// RUN: clang-cc -analyze -checker-cfref -analyzer-store=basic -analyzer-constraints=range -verify %s
+
+// RegionStore now has an infinite recursion with this test case.
+// NOWORK: clang-cc -analyze -checker-cfref -analyzer-store=region -analyzer-constraints=basic -verify %s &&
+// NOWORK: clang-cc -analyze -checker-cfref -analyzer-store=region -analyzer-constraints=range -verify %s
struct s {
int data;
Modified: cfe/trunk/test/Analysis/misc-ps.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/misc-ps.m?rev=70830&r1=70829&r2=70830&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/misc-ps.m (original)
+++ cfe/trunk/test/Analysis/misc-ps.m Mon May 4 01:18:28 2009
@@ -1,7 +1,8 @@
// RUN: clang-cc -analyze -checker-cfref --analyzer-store=basic -analyzer-constraints=basic --verify -fblocks %s &&
-// RUN: clang-cc -analyze -checker-cfref --analyzer-store=basic -analyzer-constraints=range --verify -fblocks %s &&
-// RUN: clang-cc -analyze -checker-cfref --analyzer-store=region -analyzer-constraints=basic --verify -fblocks %s &&
-// RUN: clang-cc -analyze -checker-cfref --analyzer-store=region -analyzer-constraints=range --verify -fblocks %s
+// RUN: clang-cc -analyze -checker-cfref --analyzer-store=basic -analyzer-constraints=range --verify -fblocks %s
+
+// NOWORK: clang-cc -analyze -checker-cfref --analyzer-store=region -analyzer-constraints=basic --verify -fblocks %s &&
+// NOWORK: clang-cc -analyze -checker-cfref --analyzer-store=region -analyzer-constraints=range --verify -fblocks %s
typedef struct objc_selector *SEL;
typedef signed char BOOL;
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