Update clang to r96341.

1 files changed, 756 insertions, 0 deletions

diff --git a/include/clang/Checker/PathSensitive/GRState.h b/include/clang/Checker/PathSensitive/GRState.h
new file mode 100644
index 0000000..4e44697
--- /dev/null
+++ b/include/clang/Checker/PathSensitive/GRState.h
@@ -0,0 +1,756 @@
+//== GRState*h - Path-Sens. "State" for tracking valuues -----*- C++ -*--==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines SymbolRef, ExprBindKey, and GRState*
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_ANALYSIS_VALUESTATE_H
+#define LLVM_CLANG_ANALYSIS_VALUESTATE_H
+
+// FIXME: Reduce the number of includes.
+
+#include "clang/Checker/PathSensitive/Environment.h"
+#include "clang/Checker/PathSensitive/Store.h"
+#include "clang/Checker/PathSensitive/ConstraintManager.h"
+#include "clang/Checker/PathSensitive/ValueManager.h"
+#include "clang/Checker/PathSensitive/GRCoreEngine.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/Decl.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/Analysis/Analyses/LiveVariables.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/System/DataTypes.h"
+#include "llvm/ADT/APSInt.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/ImmutableMap.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/raw_ostream.h"
+
+#include <functional>
+
+namespace clang {
+
+class GRStateManager;
+class Checker;
+
+typedef ConstraintManager* (*ConstraintManagerCreator)(GRStateManager&,
+                                                       GRSubEngine&);
+typedef StoreManager* (*StoreManagerCreator)(GRStateManager&);
+
+//===----------------------------------------------------------------------===//
+// GRStateTrait - Traits used by the Generic Data Map of a GRState.
+//===----------------------------------------------------------------------===//
+
+template <typename T> struct GRStatePartialTrait;
+
+template <typename T> struct GRStateTrait {
+  typedef typename T::data_type data_type;
+  static inline void* GDMIndex() { return &T::TagInt; }
+  static inline void* MakeVoidPtr(data_type D) { return (void*) D; }
+  static inline data_type MakeData(void* const* P) {
+    return P ? (data_type) *P : (data_type) 0;
+  }
+};
+
+//===----------------------------------------------------------------------===//
+// GRState- An ImmutableMap type Stmt*/Decl*/Symbols to SVals.
+//===----------------------------------------------------------------------===//
+
+class GRStateManager;
+
+/// GRState - This class encapsulates the actual data values for
+///  for a "state" in our symbolic value tracking.  It is intended to be
+///  used as a functional object; that is once it is created and made
+///  "persistent" in a FoldingSet its values will never change.
+class GRState : public llvm::FoldingSetNode {
+public:
+  typedef llvm::ImmutableSet<llvm::APSInt*>                IntSetTy;
+  typedef llvm::ImmutableMap<void*, void*>                 GenericDataMap;
+
+private:
+  void operator=(const GRState& R) const;
+
+  friend class GRStateManager;
+
+  GRStateManager *StateMgr;
+  Environment Env;
+  Store St;
+
+  // FIXME: Make these private.
+public:
+  GenericDataMap   GDM;
+
+public:
+
+  /// This ctor is used when creating the first GRState object.
+  GRState(GRStateManager *mgr, const Environment& env,
+          Store st, GenericDataMap gdm)
+    : StateMgr(mgr),
+      Env(env),
+      St(st),
+      GDM(gdm) {}
+
+  /// Copy ctor - We must explicitly define this or else the "Next" ptr
+  ///  in FoldingSetNode will also get copied.
+  GRState(const GRState& RHS)
+    : llvm::FoldingSetNode(),
+      StateMgr(RHS.StateMgr),
+      Env(RHS.Env),
+      St(RHS.St),
+      GDM(RHS.GDM) {}
+
+  /// getStateManager - Return the GRStateManager associated with this state.
+  GRStateManager &getStateManager() const {
+    return *StateMgr;
+  }
+
+  /// getAnalysisContext - Return the AnalysisContext associated with this
+  /// state.
+  AnalysisContext &getAnalysisContext() const {
+    return Env.getAnalysisContext();
+  }
+
+  /// getEnvironment - Return the environment associated with this state.
+  ///  The environment is the mapping from expressions to values.
+  const Environment& getEnvironment() const { return Env; }
+
+  /// getStore - Return the store associated with this state.  The store
+  ///  is a mapping from locations to values.
+  Store getStore() const { return St; }
+
+  void setStore(Store s) { St = s; }
+
+  /// getGDM - Return the generic data map associated with this state.
+  GenericDataMap getGDM() const { return GDM; }
+
+  void setGDM(GenericDataMap gdm) { GDM = gdm; }
+
+  /// Profile - Profile the contents of a GRState object for use
+  ///  in a FoldingSet.
+  static void Profile(llvm::FoldingSetNodeID& ID, const GRState* V) {
+    // FIXME: Do we need to include the AnalysisContext in the profile?
+    V->Env.Profile(ID);
+    ID.AddPointer(V->St);
+    V->GDM.Profile(ID);
+  }
+
+  /// Profile - Used to profile the contents of this object for inclusion
+  ///  in a FoldingSet.
+  void Profile(llvm::FoldingSetNodeID& ID) const {
+    Profile(ID, this);
+  }
+
+  SVal LookupExpr(Expr* E) const {
+    return Env.LookupExpr(E);
+  }
+
+  /// makeWithStore - Return a GRState with the same values as the current
+  /// state with the exception of using the specified Store.
+  const GRState *makeWithStore(Store store) const;
+
+  BasicValueFactory &getBasicVals() const;
+  SymbolManager &getSymbolManager() const;
+
+  //==---------------------------------------------------------------------==//
+  // Constraints on values.
+  //==---------------------------------------------------------------------==//
+  //
+  // Each GRState records constraints on symbolic values.  These constraints
+  // are managed using the ConstraintManager associated with a GRStateManager.
+  // As constraints gradually accrue on symbolic values, added constraints
+  // may conflict and indicate that a state is infeasible (as no real values
+  // could satisfy all the constraints).  This is the principal mechanism
+  // for modeling path-sensitivity in GRExprEngine/GRState.
+  //
+  // Various "Assume" methods form the interface for adding constraints to
+  // symbolic values.  A call to "Assume" indicates an assumption being placed
+  // on one or symbolic values.  Assume methods take the following inputs:
+  //
+  //  (1) A GRState object representing the current state.
+  //
+  //  (2) The assumed constraint (which is specific to a given "Assume" method).
+  //
+  //  (3) A binary value "Assumption" that indicates whether the constraint is
+  //      assumed to be true or false.
+  //
+  // The output of "Assume" are two values:
+  //
+  //  (a) "isFeasible" is set to true or false to indicate whether or not
+  //      the assumption is feasible.
+  //
+  //  (b) A new GRState object with the added constraints.
+  //
+  // FIXME: (a) should probably disappear since it is redundant with (b).
+  //  (i.e., (b) could just be set to NULL).
+  //
+
+  const GRState *Assume(DefinedOrUnknownSVal cond, bool assumption) const;
+  
+  std::pair<const GRState*, const GRState*>
+  Assume(DefinedOrUnknownSVal cond) const;
+
+  const GRState *AssumeInBound(DefinedOrUnknownSVal idx,
+                               DefinedOrUnknownSVal upperBound,
+                               bool assumption) const;
+
+  //==---------------------------------------------------------------------==//
+  // Utility methods for getting regions.
+  //==---------------------------------------------------------------------==//
+
+  const VarRegion* getRegion(const VarDecl *D, const LocationContext *LC) const;
+
+  //==---------------------------------------------------------------------==//
+  // Binding and retrieving values to/from the environment and symbolic store.
+  //==---------------------------------------------------------------------==//
+
+  /// BindCompoundLiteral - Return the state that has the bindings currently
+  ///  in 'state' plus the bindings for the CompoundLiteral.  'R' is the region
+  ///  for the compound literal and 'BegInit' and 'EndInit' represent an
+  ///  array of initializer values.
+  const GRState *bindCompoundLiteral(const CompoundLiteralExpr* CL,
+                                     const LocationContext *LC,
+                                     SVal V) const;
+
+  const GRState *BindExpr(const Stmt *S, SVal V, bool Invalidate = true) const;
+
+  const GRState *bindDecl(const VarRegion *VR, SVal V) const;
+
+  const GRState *bindDeclWithNoInit(const VarRegion *VR) const;
+
+  const GRState *bindLoc(Loc location, SVal V) const;
+
+  const GRState *bindLoc(SVal location, SVal V) const;
+
+  const GRState *unbindLoc(Loc LV) const;
+
+  /// Get the lvalue for a variable reference.
+  SVal getLValue(const VarDecl *D, const LocationContext *LC) const;
+
+  /// Get the lvalue for a StringLiteral.
+  SVal getLValue(const StringLiteral *literal) const;
+
+  SVal getLValue(const CompoundLiteralExpr *literal,
+                 const LocationContext *LC) const;
+
+  /// Get the lvalue for an ivar reference.
+  SVal getLValue(const ObjCIvarDecl *decl, SVal base) const;
+
+  /// Get the lvalue for a field reference.
+  SVal getLValue(const FieldDecl *decl, SVal Base) const;
+
+  /// Get the lvalue for an array index.
+  SVal getLValue(QualType ElementType, SVal Idx, SVal Base) const;
+
+  const llvm::APSInt *getSymVal(SymbolRef sym) const;
+
+  SVal getSVal(const Stmt* Ex) const;
+
+  SVal getSValAsScalarOrLoc(const Stmt *Ex) const;
+
+  SVal getSVal(Loc LV, QualType T = QualType()) const;
+
+  SVal getSVal(const MemRegion* R) const;
+
+  SVal getSValAsScalarOrLoc(const MemRegion *R) const;
+  
+  const llvm::APSInt *getSymVal(SymbolRef sym);
+
+  bool scanReachableSymbols(SVal val, SymbolVisitor& visitor) const;
+  
+  bool scanReachableSymbols(const SVal *I, const SVal *E,
+                            SymbolVisitor &visitor) const;
+  
+  bool scanReachableSymbols(const MemRegion * const *I, 
+                            const MemRegion * const *E,
+                            SymbolVisitor &visitor) const;
+
+  template <typename CB> CB scanReachableSymbols(SVal val) const;
+  template <typename CB> CB scanReachableSymbols(const SVal *beg,
+                                                 const SVal *end) const;
+  
+  template <typename CB> CB
+  scanReachableSymbols(const MemRegion * const *beg,
+                       const MemRegion * const *end) const;
+
+  //==---------------------------------------------------------------------==//
+  // Accessing the Generic Data Map (GDM).
+  //==---------------------------------------------------------------------==//
+
+  void* const* FindGDM(void* K) const;
+
+  template<typename T>
+  const GRState *add(typename GRStateTrait<T>::key_type K) const;
+
+  template <typename T>
+  typename GRStateTrait<T>::data_type
+  get() const {
+    return GRStateTrait<T>::MakeData(FindGDM(GRStateTrait<T>::GDMIndex()));
+  }
+
+  template<typename T>
+  typename GRStateTrait<T>::lookup_type
+  get(typename GRStateTrait<T>::key_type key) const {
+    void* const* d = FindGDM(GRStateTrait<T>::GDMIndex());
+    return GRStateTrait<T>::Lookup(GRStateTrait<T>::MakeData(d), key);
+  }
+
+  template <typename T>
+  typename GRStateTrait<T>::context_type get_context() const;
+
+
+  template<typename T>
+  const GRState *remove(typename GRStateTrait<T>::key_type K) const;
+
+  template<typename T>
+  const GRState *remove(typename GRStateTrait<T>::key_type K,
+                        typename GRStateTrait<T>::context_type C) const;
+
+  template<typename T>
+  const GRState *set(typename GRStateTrait<T>::data_type D) const;
+
+  template<typename T>
+  const GRState *set(typename GRStateTrait<T>::key_type K,
+                     typename GRStateTrait<T>::value_type E) const;
+
+  template<typename T>
+  const GRState *set(typename GRStateTrait<T>::key_type K,
+                     typename GRStateTrait<T>::value_type E,
+                     typename GRStateTrait<T>::context_type C) const;
+
+  template<typename T>
+  bool contains(typename GRStateTrait<T>::key_type key) const {
+    void* const* d = FindGDM(GRStateTrait<T>::GDMIndex());
+    return GRStateTrait<T>::Contains(GRStateTrait<T>::MakeData(d), key);
+  }
+
+  // State pretty-printing.
+  class Printer {
+  public:
+    virtual ~Printer() {}
+    virtual void Print(llvm::raw_ostream& Out, const GRState* state,
+                       const char* nl, const char* sep) = 0;
+  };
+
+  // Pretty-printing.
+  void print(llvm::raw_ostream& Out, const char *nl = "\n",
+             const char *sep = "") const;
+
+  void printStdErr() const;
+
+  void printDOT(llvm::raw_ostream& Out) const;
+};
+
+class GRStateSet {
+  typedef llvm::SmallPtrSet<const GRState*,5> ImplTy;
+  ImplTy Impl;
+public:
+  GRStateSet() {}
+
+  inline void Add(const GRState* St) {
+    Impl.insert(St);
+  }
+
+  typedef ImplTy::const_iterator iterator;
+
+  inline unsigned size() const { return Impl.size();  }
+  inline bool empty()    const { return Impl.empty(); }
+
+  inline iterator begin() const { return Impl.begin(); }
+  inline iterator end() const { return Impl.end();   }
+
+  class AutoPopulate {
+    GRStateSet& S;
+    unsigned StartSize;
+    const GRState* St;
+  public:
+    AutoPopulate(GRStateSet& s, const GRState* st)
+      : S(s), StartSize(S.size()), St(st) {}
+
+    ~AutoPopulate() {
+      if (StartSize == S.size())
+        S.Add(St);
+    }
+  };
+};
+
+//===----------------------------------------------------------------------===//
+// GRStateManager - Factory object for GRStates.
+//===----------------------------------------------------------------------===//
+
+class GRStateManager {
+  friend class GRState;
+  friend class GRExprEngine; // FIXME: Remove.
+private:
+  EnvironmentManager                   EnvMgr;
+  llvm::OwningPtr<StoreManager>        StoreMgr;
+  llvm::OwningPtr<ConstraintManager>   ConstraintMgr;
+
+  GRState::GenericDataMap::Factory     GDMFactory;
+
+  typedef llvm::DenseMap<void*,std::pair<void*,void (*)(void*)> > GDMContextsTy;
+  GDMContextsTy GDMContexts;
+
+  /// Printers - A set of printer objects used for pretty-printing a GRState.
+  ///  GRStateManager owns these objects.
+  std::vector<GRState::Printer*> Printers;
+
+  /// StateSet - FoldingSet containing all the states created for analyzing
+  ///  a particular function.  This is used to unique states.
+  llvm::FoldingSet<GRState> StateSet;
+
+  /// ValueMgr - Object that manages the data for all created SVals.
+  ValueManager ValueMgr;
+
+  /// Alloc - A BumpPtrAllocator to allocate states.
+  llvm::BumpPtrAllocator &Alloc;
+
+public:
+  GRStateManager(ASTContext& Ctx,
+                 StoreManagerCreator CreateStoreManager,
+                 ConstraintManagerCreator CreateConstraintManager,
+                 llvm::BumpPtrAllocator& alloc,
+                 GRSubEngine &subeng)
+    : EnvMgr(alloc),
+      GDMFactory(alloc),
+      ValueMgr(alloc, Ctx, *this),
+      Alloc(alloc) {
+    StoreMgr.reset((*CreateStoreManager)(*this));
+    ConstraintMgr.reset((*CreateConstraintManager)(*this, subeng));
+  }
+
+  ~GRStateManager();
+
+  const GRState *getInitialState(const LocationContext *InitLoc);
+
+  ASTContext &getContext() { return ValueMgr.getContext(); }
+  const ASTContext &getContext() const { return ValueMgr.getContext(); }
+
+  BasicValueFactory &getBasicVals() {
+    return ValueMgr.getBasicValueFactory();
+  }
+  const BasicValueFactory& getBasicVals() const {
+    return ValueMgr.getBasicValueFactory();
+  }
+
+  SymbolManager &getSymbolManager() {
+    return ValueMgr.getSymbolManager();
+  }
+  const SymbolManager &getSymbolManager() const {
+    return ValueMgr.getSymbolManager();
+  }
+
+  ValueManager &getValueManager() { return ValueMgr; }
+  const ValueManager &getValueManager() const { return ValueMgr; }
+
+  llvm::BumpPtrAllocator& getAllocator() { return Alloc; }
+
+  MemRegionManager& getRegionManager() {
+    return ValueMgr.getRegionManager();
+  }
+  const MemRegionManager& getRegionManager() const {
+    return ValueMgr.getRegionManager();
+  }
+
+  StoreManager& getStoreManager() { return *StoreMgr; }
+  ConstraintManager& getConstraintManager() { return *ConstraintMgr; }
+
+  const GRState* RemoveDeadBindings(const GRState* St, Stmt* Loc,
+                                    SymbolReaper& SymReaper);
+
+public:
+
+  SVal ArrayToPointer(Loc Array) {
+    return StoreMgr->ArrayToPointer(Array);
+  }
+
+  // Methods that manipulate the GDM.
+  const GRState* addGDM(const GRState* St, void* Key, void* Data);
+
+  // Methods that query & manipulate the Store.
+
+  void iterBindings(const GRState* state, StoreManager::BindingsHandler& F) {
+    StoreMgr->iterBindings(state->getStore(), F);
+  }
+
+  const GRState* getPersistentState(GRState& Impl);
+
+  bool isEqual(const GRState* state, const Expr* Ex, const llvm::APSInt& V);
+  bool isEqual(const GRState* state, const Expr* Ex, uint64_t);
+
+  //==---------------------------------------------------------------------==//
+  // Generic Data Map methods.
+  //==---------------------------------------------------------------------==//
+  //
+  // GRStateManager and GRState support a "generic data map" that allows
+  // different clients of GRState objects to embed arbitrary data within a
+  // GRState object.  The generic data map is essentially an immutable map
+  // from a "tag" (that acts as the "key" for a client) and opaque values.
+  // Tags/keys and values are simply void* values.  The typical way that clients
+  // generate unique tags are by taking the address of a static variable.
+  // Clients are responsible for ensuring that data values referred to by a
+  // the data pointer are immutable (and thus are essentially purely functional
+  // data).
+  //
+  // The templated methods below use the GRStateTrait<T> class
+  // to resolve keys into the GDM and to return data values to clients.
+  //
+
+  // Trait based GDM dispatch.
+  template <typename T>
+  const GRState* set(const GRState* st, typename GRStateTrait<T>::data_type D) {
+    return addGDM(st, GRStateTrait<T>::GDMIndex(),
+                  GRStateTrait<T>::MakeVoidPtr(D));
+  }
+
+  template<typename T>
+  const GRState* set(const GRState* st,
+                     typename GRStateTrait<T>::key_type K,
+                     typename GRStateTrait<T>::value_type V,
+                     typename GRStateTrait<T>::context_type C) {
+
+    return addGDM(st, GRStateTrait<T>::GDMIndex(),
+     GRStateTrait<T>::MakeVoidPtr(GRStateTrait<T>::Set(st->get<T>(), K, V, C)));
+  }
+
+  template <typename T>
+  const GRState* add(const GRState* st,
+                     typename GRStateTrait<T>::key_type K,
+                     typename GRStateTrait<T>::context_type C) {
+    return addGDM(st, GRStateTrait<T>::GDMIndex(),
+        GRStateTrait<T>::MakeVoidPtr(GRStateTrait<T>::Add(st->get<T>(), K, C)));
+  }
+
+  template <typename T>
+  const GRState* remove(const GRState* st,
+                        typename GRStateTrait<T>::key_type K,
+                        typename GRStateTrait<T>::context_type C) {
+
+    return addGDM(st, GRStateTrait<T>::GDMIndex(),
+     GRStateTrait<T>::MakeVoidPtr(GRStateTrait<T>::Remove(st->get<T>(), K, C)));
+  }
+
+
+  void* FindGDMContext(void* index,
+                       void* (*CreateContext)(llvm::BumpPtrAllocator&),
+                       void  (*DeleteContext)(void*));
+
+  template <typename T>
+  typename GRStateTrait<T>::context_type get_context() {
+    void* p = FindGDMContext(GRStateTrait<T>::GDMIndex(),
+                             GRStateTrait<T>::CreateContext,
+                             GRStateTrait<T>::DeleteContext);
+
+    return GRStateTrait<T>::MakeContext(p);
+  }
+
+  const llvm::APSInt* getSymVal(const GRState* St, SymbolRef sym) {
+    return ConstraintMgr->getSymVal(St, sym);
+  }
+
+  void EndPath(const GRState* St) {
+    ConstraintMgr->EndPath(St);
+  }
+};
+
+
+//===----------------------------------------------------------------------===//
+// Out-of-line method definitions for GRState.
+//===----------------------------------------------------------------------===//
+
+inline const llvm::APSInt *GRState::getSymVal(SymbolRef sym) {
+  return getStateManager().getSymVal(this, sym);
+}
+  
+inline const VarRegion* GRState::getRegion(const VarDecl *D,
+                                           const LocationContext *LC) const {
+  return getStateManager().getRegionManager().getVarRegion(D, LC);
+}
+
+inline const GRState *GRState::Assume(DefinedOrUnknownSVal Cond,
+                                      bool Assumption) const {
+  if (Cond.isUnknown())
+    return this;
+  
+  return getStateManager().ConstraintMgr->Assume(this, cast<DefinedSVal>(Cond),
+                                                 Assumption);
+}
+  
+inline std::pair<const GRState*, const GRState*>
+GRState::Assume(DefinedOrUnknownSVal Cond) const {
+  if (Cond.isUnknown())
+    return std::make_pair(this, this);
+  
+  return getStateManager().ConstraintMgr->AssumeDual(this,
+                                                     cast<DefinedSVal>(Cond));
+}
+
+inline const GRState *GRState::AssumeInBound(DefinedOrUnknownSVal Idx,
+                                             DefinedOrUnknownSVal UpperBound,
+                                             bool Assumption) const {
+  if (Idx.isUnknown() || UpperBound.isUnknown())
+    return this;
+
+  ConstraintManager &CM = *getStateManager().ConstraintMgr;
+  return CM.AssumeInBound(this, cast<DefinedSVal>(Idx),
+                           cast<DefinedSVal>(UpperBound), Assumption);
+}
+
+inline const GRState *
+GRState::bindCompoundLiteral(const CompoundLiteralExpr* CL,
+                             const LocationContext *LC, SVal V) const {
+  Store new_store = 
+    getStateManager().StoreMgr->BindCompoundLiteral(St, CL, LC, V);
+  return makeWithStore(new_store);
+}
+
+inline const GRState *GRState::bindDecl(const VarRegion* VR, SVal IVal) const {
+  Store new_store = getStateManager().StoreMgr->BindDecl(St, VR, IVal);
+  return makeWithStore(new_store);
+}
+
+inline const GRState *GRState::bindDeclWithNoInit(const VarRegion* VR) const {
+  Store new_store = getStateManager().StoreMgr->BindDeclWithNoInit(St, VR);
+  return makeWithStore(new_store);
+}
+
+inline const GRState *GRState::bindLoc(Loc LV, SVal V) const {
+  Store new_store = getStateManager().StoreMgr->Bind(St, LV, V);
+  return makeWithStore(new_store);
+}
+
+inline const GRState *GRState::bindLoc(SVal LV, SVal V) const {
+  return !isa<Loc>(LV) ? this : bindLoc(cast<Loc>(LV), V);
+}
+
+inline SVal GRState::getLValue(const VarDecl* VD,
+                               const LocationContext *LC) const {
+  return getStateManager().StoreMgr->getLValueVar(VD, LC);
+}
+
+inline SVal GRState::getLValue(const StringLiteral *literal) const {
+  return getStateManager().StoreMgr->getLValueString(literal);
+}
+
+inline SVal GRState::getLValue(const CompoundLiteralExpr *literal,
+                               const LocationContext *LC) const {
+  return getStateManager().StoreMgr->getLValueCompoundLiteral(literal, LC);
+}
+
+inline SVal GRState::getLValue(const ObjCIvarDecl *D, SVal Base) const {
+  return getStateManager().StoreMgr->getLValueIvar(D, Base);
+}
+
+inline SVal GRState::getLValue(const FieldDecl* D, SVal Base) const {
+  return getStateManager().StoreMgr->getLValueField(D, Base);
+}
+
+inline SVal GRState::getLValue(QualType ElementType, SVal Idx, SVal Base) const{
+  return getStateManager().StoreMgr->getLValueElement(ElementType, Idx, Base);
+}
+
+inline const llvm::APSInt *GRState::getSymVal(SymbolRef sym) const {
+  return getStateManager().getSymVal(this, sym);
+}
+
+inline SVal GRState::getSVal(const Stmt* Ex) const {
+  return Env.GetSVal(Ex, getStateManager().ValueMgr);
+}
+
+inline SVal GRState::getSValAsScalarOrLoc(const Stmt *S) const {
+  if (const Expr *Ex = dyn_cast<Expr>(S)) {
+    QualType T = Ex->getType();
+    if (Loc::IsLocType(T) || T->isIntegerType())
+      return getSVal(S);
+  }
+
+  return UnknownVal();
+}
+
+inline SVal GRState::getSVal(Loc LV, QualType T) const {
+  return getStateManager().StoreMgr->Retrieve(St, LV, T);
+}
+
+inline SVal GRState::getSVal(const MemRegion* R) const {
+  return getStateManager().StoreMgr->Retrieve(St, loc::MemRegionVal(R));
+}
+
+inline BasicValueFactory &GRState::getBasicVals() const {
+  return getStateManager().getBasicVals();
+}
+
+inline SymbolManager &GRState::getSymbolManager() const {
+  return getStateManager().getSymbolManager();
+}
+
+template<typename T>
+const GRState *GRState::add(typename GRStateTrait<T>::key_type K) const {
+  return getStateManager().add<T>(this, K, get_context<T>());
+}
+
+template <typename T>
+typename GRStateTrait<T>::context_type GRState::get_context() const {
+  return getStateManager().get_context<T>();
+}
+
+template<typename T>
+const GRState *GRState::remove(typename GRStateTrait<T>::key_type K) const {
+  return getStateManager().remove<T>(this, K, get_context<T>());
+}
+
+template<typename T>
+const GRState *GRState::remove(typename GRStateTrait<T>::key_type K,
+                               typename GRStateTrait<T>::context_type C) const {
+  return getStateManager().remove<T>(this, K, C);
+}
+
+template<typename T>
+const GRState *GRState::set(typename GRStateTrait<T>::data_type D) const {
+  return getStateManager().set<T>(this, D);
+}
+
+template<typename T>
+const GRState *GRState::set(typename GRStateTrait<T>::key_type K,
+                            typename GRStateTrait<T>::value_type E) const {
+  return getStateManager().set<T>(this, K, E, get_context<T>());
+}
+
+template<typename T>
+const GRState *GRState::set(typename GRStateTrait<T>::key_type K,
+                            typename GRStateTrait<T>::value_type E,
+                            typename GRStateTrait<T>::context_type C) const {
+  return getStateManager().set<T>(this, K, E, C);
+}
+
+template <typename CB>
+CB GRState::scanReachableSymbols(SVal val) const {
+  CB cb(this);
+  scanReachableSymbols(val, cb);
+  return cb;
+}
+  
+template <typename CB>
+CB GRState::scanReachableSymbols(const SVal *beg, const SVal *end) const {
+  CB cb(this);
+  scanReachableSymbols(beg, end, cb);
+  return cb;
+}
+
+template <typename CB>
+CB GRState::scanReachableSymbols(const MemRegion * const *beg,
+                                 const MemRegion * const *end) const {
+  CB cb(this);
+  scanReachableSymbols(beg, end, cb);
+  return cb;
+}
+} // end clang namespace
+
+#endif