1 files changed, 0 insertions, 3161 deletions

diff --git a/contrib/llvm/tools/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp b/contrib/llvm/tools/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
deleted file mode 100644
index a79b34189065..000000000000
--- a/contrib/llvm/tools/clang/lib/StaticAnalyzer/Checkers/MallocChecker.cpp
+++ /dev/null
@@ -1,3161 +0,0 @@
-//=== MallocChecker.cpp - A malloc/free checker -------------------*- C++ -*--//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines malloc/free checker, which checks for potential memory
-// leaks, double free, and use-after-free problems.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
-#include "InterCheckerAPI.h"
-#include "clang/AST/Attr.h"
-#include "clang/AST/ParentMap.h"
-#include "clang/Basic/SourceManager.h"
-#include "clang/Basic/TargetInfo.h"
-#include "clang/Lex/Lexer.h"
-#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
-#include "clang/StaticAnalyzer/Core/BugReporter/CommonBugCategories.h"
-#include "clang/StaticAnalyzer/Core/Checker.h"
-#include "clang/StaticAnalyzer/Core/CheckerManager.h"
-#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
-#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
-#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h"
-#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramStateTrait.h"
-#include "clang/StaticAnalyzer/Core/PathSensitive/SymbolManager.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringExtras.h"
-#include "AllocationState.h"
-#include <climits>
-#include <utility>
-
-using namespace clang;
-using namespace ento;
-
-namespace {
-
-// Used to check correspondence between allocators and deallocators.
-enum AllocationFamily {
-  AF_None,
-  AF_Malloc,
-  AF_CXXNew,
-  AF_CXXNewArray,
-  AF_IfNameIndex,
-  AF_Alloca,
-  AF_InnerBuffer
-};
-
-class RefState {
-  enum Kind { // Reference to allocated memory.
-              Allocated,
-              // Reference to zero-allocated memory.
-              AllocatedOfSizeZero,
-              // Reference to released/freed memory.
-              Released,
-              // The responsibility for freeing resources has transferred from
-              // this reference. A relinquished symbol should not be freed.
-              Relinquished,
-              // We are no longer guaranteed to have observed all manipulations
-              // of this pointer/memory. For example, it could have been
-              // passed as a parameter to an opaque function.
-              Escaped
-  };
-
-  const Stmt *S;
-  unsigned K : 3; // Kind enum, but stored as a bitfield.
-  unsigned Family : 29; // Rest of 32-bit word, currently just an allocation
-                        // family.
-
-  RefState(Kind k, const Stmt *s, unsigned family)
-    : S(s), K(k), Family(family) {
-    assert(family != AF_None);
-  }
-public:
-  bool isAllocated() const { return K == Allocated; }
-  bool isAllocatedOfSizeZero() const { return K == AllocatedOfSizeZero; }
-  bool isReleased() const { return K == Released; }
-  bool isRelinquished() const { return K == Relinquished; }
-  bool isEscaped() const { return K == Escaped; }
-  AllocationFamily getAllocationFamily() const {
-    return (AllocationFamily)Family;
-  }
-  const Stmt *getStmt() const { return S; }
-
-  bool operator==(const RefState &X) const {
-    return K == X.K && S == X.S && Family == X.Family;
-  }
-
-  static RefState getAllocated(unsigned family, const Stmt *s) {
-    return RefState(Allocated, s, family);
-  }
-  static RefState getAllocatedOfSizeZero(const RefState *RS) {
-    return RefState(AllocatedOfSizeZero, RS->getStmt(),
-                    RS->getAllocationFamily());
-  }
-  static RefState getReleased(unsigned family, const Stmt *s) {
-    return RefState(Released, s, family);
-  }
-  static RefState getRelinquished(unsigned family, const Stmt *s) {
-    return RefState(Relinquished, s, family);
-  }
-  static RefState getEscaped(const RefState *RS) {
-    return RefState(Escaped, RS->getStmt(), RS->getAllocationFamily());
-  }
-
-  void Profile(llvm::FoldingSetNodeID &ID) const {
-    ID.AddInteger(K);
-    ID.AddPointer(S);
-    ID.AddInteger(Family);
-  }
-
-  void dump(raw_ostream &OS) const {
-    switch (static_cast<Kind>(K)) {
-#define CASE(ID) case ID: OS << #ID; break;
-    CASE(Allocated)
-    CASE(AllocatedOfSizeZero)
-    CASE(Released)
-    CASE(Relinquished)
-    CASE(Escaped)
-    }
-  }
-
-  LLVM_DUMP_METHOD void dump() const { dump(llvm::errs()); }
-};
-
-enum ReallocPairKind {
-  RPToBeFreedAfterFailure,
-  // The symbol has been freed when reallocation failed.
-  RPIsFreeOnFailure,
-  // The symbol does not need to be freed after reallocation fails.
-  RPDoNotTrackAfterFailure
-};
-
-/// \class ReallocPair
-/// Stores information about the symbol being reallocated by a call to
-/// 'realloc' to allow modeling failed reallocation later in the path.
-struct ReallocPair {
-  // The symbol which realloc reallocated.
-  SymbolRef ReallocatedSym;
-  ReallocPairKind Kind;
-
-  ReallocPair(SymbolRef S, ReallocPairKind K) :
-    ReallocatedSym(S), Kind(K) {}
-  void Profile(llvm::FoldingSetNodeID &ID) const {
-    ID.AddInteger(Kind);
-    ID.AddPointer(ReallocatedSym);
-  }
-  bool operator==(const ReallocPair &X) const {
-    return ReallocatedSym == X.ReallocatedSym &&
-           Kind == X.Kind;
-  }
-};
-
-typedef std::pair<const ExplodedNode*, const MemRegion*> LeakInfo;
-
-class MallocChecker : public Checker<check::DeadSymbols,
-                                     check::PointerEscape,
-                                     check::ConstPointerEscape,
-                                     check::PreStmt<ReturnStmt>,
-                                     check::EndFunction,
-                                     check::PreCall,
-                                     check::PostStmt<CallExpr>,
-                                     check::PostStmt<CXXNewExpr>,
-                                     check::NewAllocator,
-                                     check::PreStmt<CXXDeleteExpr>,
-                                     check::PostStmt<BlockExpr>,
-                                     check::PostObjCMessage,
-                                     check::Location,
-                                     eval::Assume>
-{
-public:
-  MallocChecker()
-      : II_alloca(nullptr), II_win_alloca(nullptr), II_malloc(nullptr),
-        II_free(nullptr), II_realloc(nullptr), II_calloc(nullptr),
-        II_valloc(nullptr), II_reallocf(nullptr), II_strndup(nullptr),
-        II_strdup(nullptr), II_win_strdup(nullptr), II_kmalloc(nullptr),
-        II_kfree(nullptr), II_if_nameindex(nullptr),
-        II_if_freenameindex(nullptr), II_wcsdup(nullptr),
-        II_win_wcsdup(nullptr), II_g_malloc(nullptr), II_g_malloc0(nullptr),
-        II_g_realloc(nullptr), II_g_try_malloc(nullptr),
-        II_g_try_malloc0(nullptr), II_g_try_realloc(nullptr),
-        II_g_free(nullptr), II_g_memdup(nullptr), II_g_malloc_n(nullptr),
-        II_g_malloc0_n(nullptr), II_g_realloc_n(nullptr),
-        II_g_try_malloc_n(nullptr), II_g_try_malloc0_n(nullptr),
-        II_g_try_realloc_n(nullptr) {}
-
-  /// In pessimistic mode, the checker assumes that it does not know which
-  /// functions might free the memory.
-  enum CheckKind {
-    CK_MallocChecker,
-    CK_NewDeleteChecker,
-    CK_NewDeleteLeaksChecker,
-    CK_MismatchedDeallocatorChecker,
-    CK_InnerPointerChecker,
-    CK_NumCheckKinds
-  };
-
-  enum class MemoryOperationKind {
-    MOK_Allocate,
-    MOK_Free,
-    MOK_Any
-  };
-
-  DefaultBool IsOptimistic;
-
-  DefaultBool ChecksEnabled[CK_NumCheckKinds];
-  CheckName CheckNames[CK_NumCheckKinds];
-
-  void checkPreCall(const CallEvent &Call, CheckerContext &C) const;
-  void checkPostStmt(const CallExpr *CE, CheckerContext &C) const;
-  void checkPostStmt(const CXXNewExpr *NE, CheckerContext &C) const;
-  void checkNewAllocator(const CXXNewExpr *NE, SVal Target,
-                         CheckerContext &C) const;
-  void checkPreStmt(const CXXDeleteExpr *DE, CheckerContext &C) const;
-  void checkPostObjCMessage(const ObjCMethodCall &Call, CheckerContext &C) const;
-  void checkPostStmt(const BlockExpr *BE, CheckerContext &C) const;
-  void checkDeadSymbols(SymbolReaper &SymReaper, CheckerContext &C) const;
-  void checkPreStmt(const ReturnStmt *S, CheckerContext &C) const;
-  void checkEndFunction(const ReturnStmt *S, CheckerContext &C) const;
-  ProgramStateRef evalAssume(ProgramStateRef state, SVal Cond,
-                            bool Assumption) const;
-  void checkLocation(SVal l, bool isLoad, const Stmt *S,
-                     CheckerContext &C) const;
-
-  ProgramStateRef checkPointerEscape(ProgramStateRef State,
-                                    const InvalidatedSymbols &Escaped,
-                                    const CallEvent *Call,
-                                    PointerEscapeKind Kind) const;
-  ProgramStateRef checkConstPointerEscape(ProgramStateRef State,
-                                          const InvalidatedSymbols &Escaped,
-                                          const CallEvent *Call,
-                                          PointerEscapeKind Kind) const;
-
-  void printState(raw_ostream &Out, ProgramStateRef State,
-                  const char *NL, const char *Sep) const override;
-
-private:
-  mutable std::unique_ptr<BugType> BT_DoubleFree[CK_NumCheckKinds];
-  mutable std::unique_ptr<BugType> BT_DoubleDelete;
-  mutable std::unique_ptr<BugType> BT_Leak[CK_NumCheckKinds];
-  mutable std::unique_ptr<BugType> BT_UseFree[CK_NumCheckKinds];
-  mutable std::unique_ptr<BugType> BT_BadFree[CK_NumCheckKinds];
-  mutable std::unique_ptr<BugType> BT_FreeAlloca[CK_NumCheckKinds];
-  mutable std::unique_ptr<BugType> BT_MismatchedDealloc;
-  mutable std::unique_ptr<BugType> BT_OffsetFree[CK_NumCheckKinds];
-  mutable std::unique_ptr<BugType> BT_UseZerroAllocated[CK_NumCheckKinds];
-  mutable IdentifierInfo *II_alloca, *II_win_alloca, *II_malloc, *II_free,
-                         *II_realloc, *II_calloc, *II_valloc, *II_reallocf,
-                         *II_strndup, *II_strdup, *II_win_strdup, *II_kmalloc,
-                         *II_kfree, *II_if_nameindex, *II_if_freenameindex,
-                         *II_wcsdup, *II_win_wcsdup, *II_g_malloc,
-                         *II_g_malloc0, *II_g_realloc, *II_g_try_malloc,
-                         *II_g_try_malloc0, *II_g_try_realloc, *II_g_free,
-                         *II_g_memdup, *II_g_malloc_n, *II_g_malloc0_n,
-                         *II_g_realloc_n, *II_g_try_malloc_n,
-                         *II_g_try_malloc0_n, *II_g_try_realloc_n;
-  mutable Optional<uint64_t> KernelZeroFlagVal;
-
-  void initIdentifierInfo(ASTContext &C) const;
-
-  /// Determine family of a deallocation expression.
-  AllocationFamily getAllocationFamily(CheckerContext &C, const Stmt *S) const;
-
-  /// Print names of allocators and deallocators.
-  ///
-  /// \returns true on success.
-  bool printAllocDeallocName(raw_ostream &os, CheckerContext &C,
-                             const Expr *E) const;
-
-  /// Print expected name of an allocator based on the deallocator's
-  /// family derived from the DeallocExpr.
-  void printExpectedAllocName(raw_ostream &os, CheckerContext &C,
-                              const Expr *DeallocExpr) const;
-  /// Print expected name of a deallocator based on the allocator's
-  /// family.
-  void printExpectedDeallocName(raw_ostream &os, AllocationFamily Family) const;
-
-  ///@{
-  /// Check if this is one of the functions which can allocate/reallocate memory
-  /// pointed to by one of its arguments.
-  bool isMemFunction(const FunctionDecl *FD, ASTContext &C) const;
-  bool isCMemFunction(const FunctionDecl *FD,
-                      ASTContext &C,
-                      AllocationFamily Family,
-                      MemoryOperationKind MemKind) const;
-  bool isStandardNewDelete(const FunctionDecl *FD, ASTContext &C) const;
-  ///@}
-
-  /// Process C++ operator new()'s allocation, which is the part of C++
-  /// new-expression that goes before the constructor.
-  void processNewAllocation(const CXXNewExpr *NE, CheckerContext &C,
-                            SVal Target) const;
-
-  /// Perform a zero-allocation check.
-  /// The optional \p RetVal parameter specifies the newly allocated pointer
-  /// value; if unspecified, the value of expression \p E is used.
-  ProgramStateRef ProcessZeroAllocation(CheckerContext &C, const Expr *E,
-                                        const unsigned AllocationSizeArg,
-                                        ProgramStateRef State,
-                                        Optional<SVal> RetVal = None) const;
-
-  ProgramStateRef MallocMemReturnsAttr(CheckerContext &C,
-                                       const CallExpr *CE,
-                                       const OwnershipAttr* Att,
-                                       ProgramStateRef State) const;
-  static ProgramStateRef MallocMemAux(CheckerContext &C, const CallExpr *CE,
-                                      const Expr *SizeEx, SVal Init,
-                                      ProgramStateRef State,
-                                      AllocationFamily Family = AF_Malloc);
-  static ProgramStateRef MallocMemAux(CheckerContext &C, const CallExpr *CE,
-                                      SVal SizeEx, SVal Init,
-                                      ProgramStateRef State,
-                                      AllocationFamily Family = AF_Malloc);
-
-  static ProgramStateRef addExtentSize(CheckerContext &C, const CXXNewExpr *NE,
-                                       ProgramStateRef State, SVal Target);
-
-  // Check if this malloc() for special flags. At present that means M_ZERO or
-  // __GFP_ZERO (in which case, treat it like calloc).
-  llvm::Optional<ProgramStateRef>
-  performKernelMalloc(const CallExpr *CE, CheckerContext &C,
-                      const ProgramStateRef &State) const;
-
-  /// Update the RefState to reflect the new memory allocation.
-  /// The optional \p RetVal parameter specifies the newly allocated pointer
-  /// value; if unspecified, the value of expression \p E is used.
-  static ProgramStateRef
-  MallocUpdateRefState(CheckerContext &C, const Expr *E, ProgramStateRef State,
-                       AllocationFamily Family = AF_Malloc,
-                       Optional<SVal> RetVal = None);
-
-  ProgramStateRef FreeMemAttr(CheckerContext &C, const CallExpr *CE,
-                              const OwnershipAttr* Att,
-                              ProgramStateRef State) const;
-  ProgramStateRef FreeMemAux(CheckerContext &C, const CallExpr *CE,
-                             ProgramStateRef state, unsigned Num,
-                             bool Hold,
-                             bool &ReleasedAllocated,
-                             bool ReturnsNullOnFailure = false) const;
-  ProgramStateRef FreeMemAux(CheckerContext &C, const Expr *Arg,
-                             const Expr *ParentExpr,
-                             ProgramStateRef State,
-                             bool Hold,
-                             bool &ReleasedAllocated,
-                             bool ReturnsNullOnFailure = false) const;
-
-  ProgramStateRef ReallocMemAux(CheckerContext &C, const CallExpr *CE,
-                                bool FreesMemOnFailure,
-                                ProgramStateRef State,
-                                bool SuffixWithN = false) const;
-  static SVal evalMulForBufferSize(CheckerContext &C, const Expr *Blocks,
-                                   const Expr *BlockBytes);
-  static ProgramStateRef CallocMem(CheckerContext &C, const CallExpr *CE,
-                                   ProgramStateRef State);
-
-  /// Check if the memory associated with this symbol was released.
-  bool isReleased(SymbolRef Sym, CheckerContext &C) const;
-
-  /// See if deallocation happens in a suspicious context. If so, escape the
-  /// pointers that otherwise would have been deallocated and return true.
-  bool suppressDeallocationsInSuspiciousContexts(const CallExpr *CE,
-                                                 CheckerContext &C) const;
-
-  bool checkUseAfterFree(SymbolRef Sym, CheckerContext &C, const Stmt *S) const;
-
-  void checkUseZeroAllocated(SymbolRef Sym, CheckerContext &C,
-                             const Stmt *S) const;
-
-  bool checkDoubleDelete(SymbolRef Sym, CheckerContext &C) const;
-
-  /// Check if the function is known free memory, or if it is
-  /// "interesting" and should be modeled explicitly.
-  ///
-  /// \param [out] EscapingSymbol A function might not free memory in general,
-  ///   but could be known to free a particular symbol. In this case, false is
-  ///   returned and the single escaping symbol is returned through the out
-  ///   parameter.
-  ///
-  /// We assume that pointers do not escape through calls to system functions
-  /// not handled by this checker.
-  bool mayFreeAnyEscapedMemoryOrIsModeledExplicitly(const CallEvent *Call,
-                                   ProgramStateRef State,
-                                   SymbolRef &EscapingSymbol) const;
-
-  // Implementation of the checkPointerEscape callbacks.
-  ProgramStateRef checkPointerEscapeAux(ProgramStateRef State,
-                                  const InvalidatedSymbols &Escaped,
-                                  const CallEvent *Call,
-                                  PointerEscapeKind Kind,
-                                  bool(*CheckRefState)(const RefState*)) const;
-
-  // Implementation of the checkPreStmt and checkEndFunction callbacks.
-  void checkEscapeOnReturn(const ReturnStmt *S, CheckerContext &C) const;
-
-  ///@{
-  /// Tells if a given family/call/symbol is tracked by the current checker.
-  /// Sets CheckKind to the kind of the checker responsible for this
-  /// family/call/symbol.
-  Optional<CheckKind> getCheckIfTracked(AllocationFamily Family,
-                                        bool IsALeakCheck = false) const;
-  Optional<CheckKind> getCheckIfTracked(CheckerContext &C,
-                                        const Stmt *AllocDeallocStmt,
-                                        bool IsALeakCheck = false) const;
-  Optional<CheckKind> getCheckIfTracked(CheckerContext &C, SymbolRef Sym,
-                                        bool IsALeakCheck = false) const;
-  ///@}
-  static bool SummarizeValue(raw_ostream &os, SVal V);
-  static bool SummarizeRegion(raw_ostream &os, const MemRegion *MR);
-  void ReportBadFree(CheckerContext &C, SVal ArgVal, SourceRange Range,
-                     const Expr *DeallocExpr) const;
-  void ReportFreeAlloca(CheckerContext &C, SVal ArgVal,
-                        SourceRange Range) const;
-  void ReportMismatchedDealloc(CheckerContext &C, SourceRange Range,
-                               const Expr *DeallocExpr, const RefState *RS,
-                               SymbolRef Sym, bool OwnershipTransferred) const;
-  void ReportOffsetFree(CheckerContext &C, SVal ArgVal, SourceRange Range,
-                        const Expr *DeallocExpr,
-                        const Expr *AllocExpr = nullptr) const;
-  void ReportUseAfterFree(CheckerContext &C, SourceRange Range,
-                          SymbolRef Sym) const;
-  void ReportDoubleFree(CheckerContext &C, SourceRange Range, bool Released,
-                        SymbolRef Sym, SymbolRef PrevSym) const;
-
-  void ReportDoubleDelete(CheckerContext &C, SymbolRef Sym) const;
-
-  void ReportUseZeroAllocated(CheckerContext &C, SourceRange Range,
-                              SymbolRef Sym) const;
-
-  void ReportFunctionPointerFree(CheckerContext &C, SVal ArgVal,
-                                 SourceRange Range, const Expr *FreeExpr) const;
-
-  /// Find the location of the allocation for Sym on the path leading to the
-  /// exploded node N.
-  LeakInfo getAllocationSite(const ExplodedNode *N, SymbolRef Sym,
-                             CheckerContext &C) const;
-
-  void reportLeak(SymbolRef Sym, ExplodedNode *N, CheckerContext &C) const;
-
-  /// The bug visitor which allows us to print extra diagnostics along the
-  /// BugReport path. For example, showing the allocation site of the leaked
-  /// region.
-  class MallocBugVisitor final : public BugReporterVisitor {
-  protected:
-    enum NotificationMode {
-      Normal,
-      ReallocationFailed
-    };
-
-    // The allocated region symbol tracked by the main analysis.
-    SymbolRef Sym;
-
-    // The mode we are in, i.e. what kind of diagnostics will be emitted.
-    NotificationMode Mode;
-
-    // A symbol from when the primary region should have been reallocated.
-    SymbolRef FailedReallocSymbol;
-
-    // A C++ destructor stack frame in which memory was released. Used for
-    // miscellaneous false positive suppression.
-    const StackFrameContext *ReleaseDestructorLC;
-
-    bool IsLeak;
-
-  public:
-    MallocBugVisitor(SymbolRef S, bool isLeak = false)
-        : Sym(S), Mode(Normal), FailedReallocSymbol(nullptr),
-          ReleaseDestructorLC(nullptr), IsLeak(isLeak) {}
-
-    static void *getTag() {
-      static int Tag = 0;
-      return &Tag;
-    }
-
-    void Profile(llvm::FoldingSetNodeID &ID) const override {
-      ID.AddPointer(getTag());
-      ID.AddPointer(Sym);
-    }
-
-    inline bool isAllocated(const RefState *S, const RefState *SPrev,
-                            const Stmt *Stmt) {
-      // Did not track -> allocated. Other state (released) -> allocated.
-      return (Stmt && (isa<CallExpr>(Stmt) || isa<CXXNewExpr>(Stmt)) &&
-              (S && (S->isAllocated() || S->isAllocatedOfSizeZero())) &&
-              (!SPrev || !(SPrev->isAllocated() ||
-                           SPrev->isAllocatedOfSizeZero())));
-    }
-
-    inline bool isReleased(const RefState *S, const RefState *SPrev,
-                           const Stmt *Stmt) {
-      // Did not track -> released. Other state (allocated) -> released.
-      // The statement associated with the release might be missing.
-      bool IsReleased = (S && S->isReleased()) &&
-                        (!SPrev || !SPrev->isReleased());
-      assert(!IsReleased ||
-             (Stmt && (isa<CallExpr>(Stmt) || isa<CXXDeleteExpr>(Stmt))) ||
-             (!Stmt && S->getAllocationFamily() == AF_InnerBuffer));
-      return IsReleased;
-    }
-
-    inline bool isRelinquished(const RefState *S, const RefState *SPrev,
-                               const Stmt *Stmt) {
-      // Did not track -> relinquished. Other state (allocated) -> relinquished.
-      return (Stmt && (isa<CallExpr>(Stmt) || isa<ObjCMessageExpr>(Stmt) ||
-                                              isa<ObjCPropertyRefExpr>(Stmt)) &&
-              (S && S->isRelinquished()) &&
-              (!SPrev || !SPrev->isRelinquished()));
-    }
-
-    inline bool isReallocFailedCheck(const RefState *S, const RefState *SPrev,
-                                     const Stmt *Stmt) {
-      // If the expression is not a call, and the state change is
-      // released -> allocated, it must be the realloc return value
-      // check. If we have to handle more cases here, it might be cleaner just
-      // to track this extra bit in the state itself.
-      return ((!Stmt || !isa<CallExpr>(Stmt)) &&
-              (S && (S->isAllocated() || S->isAllocatedOfSizeZero())) &&
-              (SPrev && !(SPrev->isAllocated() ||
-                          SPrev->isAllocatedOfSizeZero())));
-    }
-
-    std::shared_ptr<PathDiagnosticPiece> VisitNode(const ExplodedNode *N,
-                                                   BugReporterContext &BRC,
-                                                   BugReport &BR) override;
-
-    std::shared_ptr<PathDiagnosticPiece>
-    getEndPath(BugReporterContext &BRC, const ExplodedNode *EndPathNode,
-               BugReport &BR) override {
-      if (!IsLeak)
-        return nullptr;
-
-      PathDiagnosticLocation L =
-        PathDiagnosticLocation::createEndOfPath(EndPathNode,
-                                                BRC.getSourceManager());
-      // Do not add the statement itself as a range in case of leak.
-      return std::make_shared<PathDiagnosticEventPiece>(L, BR.getDescription(),
-                                                         false);
-    }
-
-  private:
-    class StackHintGeneratorForReallocationFailed
-        : public StackHintGeneratorForSymbol {
-    public:
-      StackHintGeneratorForReallocationFailed(SymbolRef S, StringRef M)
-        : StackHintGeneratorForSymbol(S, M) {}
-
-      std::string getMessageForArg(const Expr *ArgE,
-                                   unsigned ArgIndex) override {
-        // Printed parameters start at 1, not 0.
-        ++ArgIndex;
-
-        SmallString<200> buf;
-        llvm::raw_svector_ostream os(buf);
-
-        os << "Reallocation of " << ArgIndex << llvm::getOrdinalSuffix(ArgIndex)
-           << " parameter failed";
-
-        return os.str();
-      }
-
-      std::string getMessageForReturn(const CallExpr *CallExpr) override {
-        return "Reallocation of returned value failed";
-      }
-    };
-  };
-};
-} // end anonymous namespace
-
-REGISTER_MAP_WITH_PROGRAMSTATE(RegionState, SymbolRef, RefState)
-REGISTER_MAP_WITH_PROGRAMSTATE(ReallocPairs, SymbolRef, ReallocPair)
-REGISTER_SET_WITH_PROGRAMSTATE(ReallocSizeZeroSymbols, SymbolRef)
-
-// A map from the freed symbol to the symbol representing the return value of
-// the free function.
-REGISTER_MAP_WITH_PROGRAMSTATE(FreeReturnValue, SymbolRef, SymbolRef)
-
-namespace {
-class StopTrackingCallback final : public SymbolVisitor {
-  ProgramStateRef state;
-public:
-  StopTrackingCallback(ProgramStateRef st) : state(std::move(st)) {}
-  ProgramStateRef getState() const { return state; }
-
-  bool VisitSymbol(SymbolRef sym) override {
-    state = state->remove<RegionState>(sym);
-    return true;
-  }
-};
-} // end anonymous namespace
-
-void MallocChecker::initIdentifierInfo(ASTContext &Ctx) const {
-  if (II_malloc)
-    return;
-  II_alloca = &Ctx.Idents.get("alloca");
-  II_malloc = &Ctx.Idents.get("malloc");
-  II_free = &Ctx.Idents.get("free");
-  II_realloc = &Ctx.Idents.get("realloc");
-  II_reallocf = &Ctx.Idents.get("reallocf");
-  II_calloc = &Ctx.Idents.get("calloc");
-  II_valloc = &Ctx.Idents.get("valloc");
-  II_strdup = &Ctx.Idents.get("strdup");
-  II_strndup = &Ctx.Idents.get("strndup");
-  II_wcsdup = &Ctx.Idents.get("wcsdup");
-  II_kmalloc = &Ctx.Idents.get("kmalloc");
-  II_kfree = &Ctx.Idents.get("kfree");
-  II_if_nameindex = &Ctx.Idents.get("if_nameindex");
-  II_if_freenameindex = &Ctx.Idents.get("if_freenameindex");
-
-  //MSVC uses `_`-prefixed instead, so we check for them too.
-  II_win_strdup = &Ctx.Idents.get("_strdup");
-  II_win_wcsdup = &Ctx.Idents.get("_wcsdup");
-  II_win_alloca = &Ctx.Idents.get("_alloca");
-
-  // Glib
-  II_g_malloc = &Ctx.Idents.get("g_malloc");
-  II_g_malloc0 = &Ctx.Idents.get("g_malloc0");
-  II_g_realloc = &Ctx.Idents.get("g_realloc");
-  II_g_try_malloc = &Ctx.Idents.get("g_try_malloc");
-  II_g_try_malloc0 = &Ctx.Idents.get("g_try_malloc0");
-  II_g_try_realloc = &Ctx.Idents.get("g_try_realloc");
-  II_g_free = &Ctx.Idents.get("g_free");
-  II_g_memdup = &Ctx.Idents.get("g_memdup");
-  II_g_malloc_n = &Ctx.Idents.get("g_malloc_n");
-  II_g_malloc0_n = &Ctx.Idents.get("g_malloc0_n");
-  II_g_realloc_n = &Ctx.Idents.get("g_realloc_n");
-  II_g_try_malloc_n = &Ctx.Idents.get("g_try_malloc_n");
-  II_g_try_malloc0_n = &Ctx.Idents.get("g_try_malloc0_n");
-  II_g_try_realloc_n = &Ctx.Idents.get("g_try_realloc_n");
-}
-
-bool MallocChecker::isMemFunction(const FunctionDecl *FD, ASTContext &C) const {
-  if (isCMemFunction(FD, C, AF_Malloc, MemoryOperationKind::MOK_Any))
-    return true;
-
-  if (isCMemFunction(FD, C, AF_IfNameIndex, MemoryOperationKind::MOK_Any))
-    return true;
-
-  if (isCMemFunction(FD, C, AF_Alloca, MemoryOperationKind::MOK_Any))
-    return true;
-
-  if (isStandardNewDelete(FD, C))
-    return true;
-
-  return false;
-}
-
-bool MallocChecker::isCMemFunction(const FunctionDecl *FD,
-                                   ASTContext &C,
-                                   AllocationFamily Family,
-                                   MemoryOperationKind MemKind) const {
-  if (!FD)
-    return false;
-
-  bool CheckFree = (MemKind == MemoryOperationKind::MOK_Any ||
-                    MemKind == MemoryOperationKind::MOK_Free);
-  bool CheckAlloc = (MemKind == MemoryOperationKind::MOK_Any ||
-                     MemKind == MemoryOperationKind::MOK_Allocate);
-
-  if (FD->getKind() == Decl::Function) {
-    const IdentifierInfo *FunI = FD->getIdentifier();
-    initIdentifierInfo(C);
-
-    if (Family == AF_Malloc && CheckFree) {
-      if (FunI == II_free || FunI == II_realloc || FunI == II_reallocf ||
-          FunI == II_g_free || FunI == II_kfree)
-        return true;
-    }
-
-    if (Family == AF_Malloc && CheckAlloc) {
-      if (FunI == II_malloc || FunI == II_realloc || FunI == II_reallocf ||
-          FunI == II_calloc || FunI == II_valloc || FunI == II_strdup ||
-          FunI == II_win_strdup || FunI == II_strndup || FunI == II_wcsdup ||
-          FunI == II_win_wcsdup || FunI == II_kmalloc ||
-          FunI == II_g_malloc || FunI == II_g_malloc0 ||
-          FunI == II_g_realloc || FunI == II_g_try_malloc ||
-          FunI == II_g_try_malloc0 || FunI == II_g_try_realloc ||
-          FunI == II_g_memdup || FunI == II_g_malloc_n ||
-          FunI == II_g_malloc0_n || FunI == II_g_realloc_n ||
-          FunI == II_g_try_malloc_n || FunI == II_g_try_malloc0_n ||
-          FunI == II_g_try_realloc_n)
-        return true;
-    }
-
-    if (Family == AF_IfNameIndex && CheckFree) {
-      if (FunI == II_if_freenameindex)
-        return true;
-    }
-
-    if (Family == AF_IfNameIndex && CheckAlloc) {
-      if (FunI == II_if_nameindex)
-        return true;
-    }
-
-    if (Family == AF_Alloca && CheckAlloc) {
-      if (FunI == II_alloca || FunI == II_win_alloca)
-        return true;
-    }
-  }
-
-  if (Family != AF_Malloc)
-    return false;
-
-  if (IsOptimistic && FD->hasAttrs()) {
-    for (const auto *I : FD->specific_attrs<OwnershipAttr>()) {
-      OwnershipAttr::OwnershipKind OwnKind = I->getOwnKind();
-      if(OwnKind == OwnershipAttr::Takes || OwnKind == OwnershipAttr::Holds) {
-        if (CheckFree)
-          return true;
-      } else if (OwnKind == OwnershipAttr::Returns) {
-        if (CheckAlloc)
-          return true;
-      }
-    }
-  }
-
-  return false;
-}
-
-// Tells if the callee is one of the builtin new/delete operators, including
-// placement operators and other standard overloads.
-bool MallocChecker::isStandardNewDelete(const FunctionDecl *FD,
-                                        ASTContext &C) const {
-  if (!FD)
-    return false;
-
-  OverloadedOperatorKind Kind = FD->getOverloadedOperator();
-  if (Kind != OO_New && Kind != OO_Array_New &&
-      Kind != OO_Delete && Kind != OO_Array_Delete)
-    return false;
-
-  // This is standard if and only if it's not defined in a user file.
-  SourceLocation L = FD->getLocation();
-  // If the header for operator delete is not included, it's still defined
-  // in an invalid source location. Check to make sure we don't crash.
-  return !L.isValid() || C.getSourceManager().isInSystemHeader(L);
-}
-
-llvm::Optional<ProgramStateRef> MallocChecker::performKernelMalloc(
-  const CallExpr *CE, CheckerContext &C, const ProgramStateRef &State) const {
-  // 3-argument malloc(), as commonly used in {Free,Net,Open}BSD Kernels:
-  //
-  // void *malloc(unsigned long size, struct malloc_type *mtp, int flags);
-  //
-  // One of the possible flags is M_ZERO, which means 'give me back an
-  // allocation which is already zeroed', like calloc.
-
-  // 2-argument kmalloc(), as used in the Linux kernel:
-  //
-  // void *kmalloc(size_t size, gfp_t flags);
-  //
-  // Has the similar flag value __GFP_ZERO.
-
-  // This logic is largely cloned from O_CREAT in UnixAPIChecker, maybe some
-  // code could be shared.
-
-  ASTContext &Ctx = C.getASTContext();
-  llvm::Triple::OSType OS = Ctx.getTargetInfo().getTriple().getOS();
-
-  if (!KernelZeroFlagVal.hasValue()) {
-    if (OS == llvm::Triple::FreeBSD)
-      KernelZeroFlagVal = 0x0100;
-    else if (OS == llvm::Triple::NetBSD)
-      KernelZeroFlagVal = 0x0002;
-    else if (OS == llvm::Triple::OpenBSD)
-      KernelZeroFlagVal = 0x0008;
-    else if (OS == llvm::Triple::Linux)
-      // __GFP_ZERO
-      KernelZeroFlagVal = 0x8000;
-    else
-      // FIXME: We need a more general way of getting the M_ZERO value.
-      // See also: O_CREAT in UnixAPIChecker.cpp.
-
-      // Fall back to normal malloc behavior on platforms where we don't
-      // know M_ZERO.
-      return None;
-  }
-
-  // We treat the last argument as the flags argument, and callers fall-back to
-  // normal malloc on a None return. This works for the FreeBSD kernel malloc
-  // as well as Linux kmalloc.
-  if (CE->getNumArgs() < 2)
-    return None;
-
-  const Expr *FlagsEx = CE->getArg(CE->getNumArgs() - 1);
-  const SVal V = C.getSVal(FlagsEx);
-  if (!V.getAs<NonLoc>()) {
-    // The case where 'V' can be a location can only be due to a bad header,
-    // so in this case bail out.
-    return None;
-  }
-
-  NonLoc Flags = V.castAs<NonLoc>();
-  NonLoc ZeroFlag = C.getSValBuilder()
-      .makeIntVal(KernelZeroFlagVal.getValue(), FlagsEx->getType())
-      .castAs<NonLoc>();
-  SVal MaskedFlagsUC = C.getSValBuilder().evalBinOpNN(State, BO_And,
-                                                      Flags, ZeroFlag,
-                                                      FlagsEx->getType());
-  if (MaskedFlagsUC.isUnknownOrUndef())
-    return None;
-  DefinedSVal MaskedFlags = MaskedFlagsUC.castAs<DefinedSVal>();
-
-  // Check if maskedFlags is non-zero.
-  ProgramStateRef TrueState, FalseState;
-  std::tie(TrueState, FalseState) = State->assume(MaskedFlags);
-
-  // If M_ZERO is set, treat this like calloc (initialized).
-  if (TrueState && !FalseState) {
-    SVal ZeroVal = C.getSValBuilder().makeZeroVal(Ctx.CharTy);
-    return MallocMemAux(C, CE, CE->getArg(0), ZeroVal, TrueState);
-  }
-
-  return None;
-}
-
-SVal MallocChecker::evalMulForBufferSize(CheckerContext &C, const Expr *Blocks,
-                                         const Expr *BlockBytes) {
-  SValBuilder &SB = C.getSValBuilder();
-  SVal BlocksVal = C.getSVal(Blocks);
-  SVal BlockBytesVal = C.getSVal(BlockBytes);
-  ProgramStateRef State = C.getState();
-  SVal TotalSize = SB.evalBinOp(State, BO_Mul, BlocksVal, BlockBytesVal,
-                                SB.getContext().getSizeType());
-  return TotalSize;
-}
-
-void MallocChecker::checkPostStmt(const CallExpr *CE, CheckerContext &C) const {
-  if (C.wasInlined)
-    return;
-
-  const FunctionDecl *FD = C.getCalleeDecl(CE);
-  if (!FD)
-    return;
-
-  ProgramStateRef State = C.getState();
-  bool ReleasedAllocatedMemory = false;
-
-  if (FD->getKind() == Decl::Function) {
-    initIdentifierInfo(C.getASTContext());
-    IdentifierInfo *FunI = FD->getIdentifier();
-
-    if (FunI == II_malloc || FunI == II_g_malloc || FunI == II_g_try_malloc) {
-      if (CE->getNumArgs() < 1)
-        return;
-      if (CE->getNumArgs() < 3) {
-        State = MallocMemAux(C, CE, CE->getArg(0), UndefinedVal(), State);
-        if (CE->getNumArgs() == 1)
-          State = ProcessZeroAllocation(C, CE, 0, State);
-      } else if (CE->getNumArgs() == 3) {
-        llvm::Optional<ProgramStateRef> MaybeState =
-          performKernelMalloc(CE, C, State);
-        if (MaybeState.hasValue())
-          State = MaybeState.getValue();
-        else
-          State = MallocMemAux(C, CE, CE->getArg(0), UndefinedVal(), State);
-      }
-    } else if (FunI == II_kmalloc) {
-      if (CE->getNumArgs() < 1)
-        return;
-      llvm::Optional<ProgramStateRef> MaybeState =
-        performKernelMalloc(CE, C, State);
-      if (MaybeState.hasValue())
-        State = MaybeState.getValue();
-      else
-        State = MallocMemAux(C, CE, CE->getArg(0), UndefinedVal(), State);
-    } else if (FunI == II_valloc) {
-      if (CE->getNumArgs() < 1)
-        return;
-      State = MallocMemAux(C, CE, CE->getArg(0), UndefinedVal(), State);
-      State = ProcessZeroAllocation(C, CE, 0, State);
-    } else if (FunI == II_realloc || FunI == II_g_realloc ||
-               FunI == II_g_try_realloc) {
-      State = ReallocMemAux(C, CE, false, State);
-      State = ProcessZeroAllocation(C, CE, 1, State);
-    } else if (FunI == II_reallocf) {
-      State = ReallocMemAux(C, CE, true, State);
-      State = ProcessZeroAllocation(C, CE, 1, State);
-    } else if (FunI == II_calloc) {
-      State = CallocMem(C, CE, State);
-      State = ProcessZeroAllocation(C, CE, 0, State);
-      State = ProcessZeroAllocation(C, CE, 1, State);
-    } else if (FunI == II_free || FunI == II_g_free || FunI == II_kfree) {
-      if (suppressDeallocationsInSuspiciousContexts(CE, C))
-        return;
-
-      State = FreeMemAux(C, CE, State, 0, false, ReleasedAllocatedMemory);
-    } else if (FunI == II_strdup || FunI == II_win_strdup ||
-               FunI == II_wcsdup || FunI == II_win_wcsdup) {
-      State = MallocUpdateRefState(C, CE, State);
-    } else if (FunI == II_strndup) {
-      State = MallocUpdateRefState(C, CE, State);
-    } else if (FunI == II_alloca || FunI == II_win_alloca) {
-      if (CE->getNumArgs() < 1)
-        return;
-      State = MallocMemAux(C, CE, CE->getArg(0), UndefinedVal(), State,
-                           AF_Alloca);
-      State = ProcessZeroAllocation(C, CE, 0, State);
-    } else if (isStandardNewDelete(FD, C.getASTContext())) {
-      // Process direct calls to operator new/new[]/delete/delete[] functions
-      // as distinct from new/new[]/delete/delete[] expressions that are
-      // processed by the checkPostStmt callbacks for CXXNewExpr and
-      // CXXDeleteExpr.
-      OverloadedOperatorKind K = FD->getOverloadedOperator();
-      if (K == OO_New) {
-        State = MallocMemAux(C, CE, CE->getArg(0), UndefinedVal(), State,
-                             AF_CXXNew);
-        State = ProcessZeroAllocation(C, CE, 0, State);
-      }
-      else if (K == OO_Array_New) {
-        State = MallocMemAux(C, CE, CE->getArg(0), UndefinedVal(), State,
-                             AF_CXXNewArray);
-        State = ProcessZeroAllocation(C, CE, 0, State);
-      }
-      else if (K == OO_Delete || K == OO_Array_Delete)
-        State = FreeMemAux(C, CE, State, 0, false, ReleasedAllocatedMemory);
-      else
-        llvm_unreachable("not a new/delete operator");
-    } else if (FunI == II_if_nameindex) {
-      // Should we model this differently? We can allocate a fixed number of
-      // elements with zeros in the last one.
-      State = MallocMemAux(C, CE, UnknownVal(), UnknownVal(), State,
-                           AF_IfNameIndex);
-    } else if (FunI == II_if_freenameindex) {
-      State = FreeMemAux(C, CE, State, 0, false, ReleasedAllocatedMemory);
-    } else if (FunI == II_g_malloc0 || FunI == II_g_try_malloc0) {
-      if (CE->getNumArgs() < 1)
-        return;
-      SValBuilder &svalBuilder = C.getSValBuilder();
-      SVal zeroVal = svalBuilder.makeZeroVal(svalBuilder.getContext().CharTy);
-      State = MallocMemAux(C, CE, CE->getArg(0), zeroVal, State);
-      State = ProcessZeroAllocation(C, CE, 0, State);
-    } else if (FunI == II_g_memdup) {
-      if (CE->getNumArgs() < 2)
-        return;
-      State = MallocMemAux(C, CE, CE->getArg(1), UndefinedVal(), State);
-      State = ProcessZeroAllocation(C, CE, 1, State);
-    } else if (FunI == II_g_malloc_n || FunI == II_g_try_malloc_n ||
-               FunI == II_g_malloc0_n || FunI == II_g_try_malloc0_n) {
-      if (CE->getNumArgs() < 2)
-        return;
-      SVal Init = UndefinedVal();
-      if (FunI == II_g_malloc0_n || FunI == II_g_try_malloc0_n) {
-        SValBuilder &SB = C.getSValBuilder();
-        Init = SB.makeZeroVal(SB.getContext().CharTy);
-      }
-      SVal TotalSize = evalMulForBufferSize(C, CE->getArg(0), CE->getArg(1));
-      State = MallocMemAux(C, CE, TotalSize, Init, State);
-      State = ProcessZeroAllocation(C, CE, 0, State);
-      State = ProcessZeroAllocation(C, CE, 1, State);
-    } else if (FunI == II_g_realloc_n || FunI == II_g_try_realloc_n) {
-      if (CE->getNumArgs() < 3)
-        return;
-      State = ReallocMemAux(C, CE, false, State, true);
-      State = ProcessZeroAllocation(C, CE, 1, State);
-      State = ProcessZeroAllocation(C, CE, 2, State);
-    }
-  }
-
-  if (IsOptimistic || ChecksEnabled[CK_MismatchedDeallocatorChecker]) {
-    // Check all the attributes, if there are any.
-    // There can be multiple of these attributes.
-    if (FD->hasAttrs())
-      for (const auto *I : FD->specific_attrs<OwnershipAttr>()) {
-        switch (I->getOwnKind()) {
-        case OwnershipAttr::Returns:
-          State = MallocMemReturnsAttr(C, CE, I, State);
-          break;
-        case OwnershipAttr::Takes:
-        case OwnershipAttr::Holds:
-          State = FreeMemAttr(C, CE, I, State);
-          break;
-        }
-      }
-  }
-  C.addTransition(State);
-}
-
-// Performs a 0-sized allocations check.
-ProgramStateRef MallocChecker::ProcessZeroAllocation(
-    CheckerContext &C, const Expr *E, const unsigned AllocationSizeArg,
-    ProgramStateRef State, Optional<SVal> RetVal) const {
-  if (!State)
-    return nullptr;
-
-  if (!RetVal)
-    RetVal = C.getSVal(E);
-
-  const Expr *Arg = nullptr;
-
-  if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
-    Arg = CE->getArg(AllocationSizeArg);
-  }
-  else if (const CXXNewExpr *NE = dyn_cast<CXXNewExpr>(E)) {
-    if (NE->isArray())
-      Arg = *NE->getArraySize();
-    else
-      return State;
-  }
-  else
-    llvm_unreachable("not a CallExpr or CXXNewExpr");
-
-  assert(Arg);
-
-  Optional<DefinedSVal> DefArgVal = C.getSVal(Arg).getAs<DefinedSVal>();
-
-  if (!DefArgVal)
-    return State;
-
-  // Check if the allocation size is 0.
-  ProgramStateRef TrueState, FalseState;
-  SValBuilder &SvalBuilder = C.getSValBuilder();
-  DefinedSVal Zero =
-      SvalBuilder.makeZeroVal(Arg->getType()).castAs<DefinedSVal>();
-
-  std::tie(TrueState, FalseState) =
-      State->assume(SvalBuilder.evalEQ(State, *DefArgVal, Zero));
-
-  if (TrueState && !FalseState) {
-    SymbolRef Sym = RetVal->getAsLocSymbol();
-    if (!Sym)
-      return State;
-
-    const RefState *RS = State->get<RegionState>(Sym);
-    if (RS) {
-      if (RS->isAllocated())
-        return TrueState->set<RegionState>(Sym,
-                                          RefState::getAllocatedOfSizeZero(RS));
-      else
-        return State;
-    } else {
-      // Case of zero-size realloc. Historically 'realloc(ptr, 0)' is treated as
-      // 'free(ptr)' and the returned value from 'realloc(ptr, 0)' is not
-      // tracked. Add zero-reallocated Sym to the state to catch references
-      // to zero-allocated memory.
-      return TrueState->add<ReallocSizeZeroSymbols>(Sym);
-    }
-  }
-
-  // Assume the value is non-zero going forward.
-  assert(FalseState);
-  return FalseState;
-}
-
-static QualType getDeepPointeeType(QualType T) {
-  QualType Result = T, PointeeType = T->getPointeeType();
-  while (!PointeeType.isNull()) {
-    Result = PointeeType;
-    PointeeType = PointeeType->getPointeeType();
-  }
-  return Result;
-}
-
-static bool treatUnusedNewEscaped(const CXXNewExpr *NE) {
-
-  const CXXConstructExpr *ConstructE = NE->getConstructExpr();
-  if (!ConstructE)
-    return false;
-
-  if (!NE->getAllocatedType()->getAsCXXRecordDecl())
-    return false;
-
-  const CXXConstructorDecl *CtorD = ConstructE->getConstructor();
-
-  // Iterate over the constructor parameters.
-  for (const auto *CtorParam : CtorD->parameters()) {
-
-    QualType CtorParamPointeeT = CtorParam->getType()->getPointeeType();
-    if (CtorParamPointeeT.isNull())
-      continue;
-
-    CtorParamPointeeT = getDeepPointeeType(CtorParamPointeeT);
-
-    if (CtorParamPointeeT->getAsCXXRecordDecl())
-      return true;
-  }
-
-  return false;
-}
-
-void MallocChecker::processNewAllocation(const CXXNewExpr *NE,
-                                         CheckerContext &C,
-                                         SVal Target) const {
-  if (!isStandardNewDelete(NE->getOperatorNew(), C.getASTContext()))
-    return;
-
-  ParentMap &PM = C.getLocationContext()->getParentMap();
-  if (!PM.isConsumedExpr(NE) && treatUnusedNewEscaped(NE))
-    return;
-
-  ProgramStateRef State = C.getState();
-  // The return value from operator new is bound to a specified initialization
-  // value (if any) and we don't want to loose this value. So we call
-  // MallocUpdateRefState() instead of MallocMemAux() which breaks the
-  // existing binding.
-  State = MallocUpdateRefState(C, NE, State, NE->isArray() ? AF_CXXNewArray
-                                                           : AF_CXXNew, Target);
-  State = addExtentSize(C, NE, State, Target);
-  State = ProcessZeroAllocation(C, NE, 0, State, Target);
-  C.addTransition(State);
-}
-
-void MallocChecker::checkPostStmt(const CXXNewExpr *NE,
-                                  CheckerContext &C) const {
-  if (!C.getAnalysisManager().getAnalyzerOptions().MayInlineCXXAllocator)
-    processNewAllocation(NE, C, C.getSVal(NE));
-}
-
-void MallocChecker::checkNewAllocator(const CXXNewExpr *NE, SVal Target,
-                                      CheckerContext &C) const {
-  if (!C.wasInlined)
-    processNewAllocation(NE, C, Target);
-}
-
-// Sets the extent value of the MemRegion allocated by
-// new expression NE to its size in Bytes.
-//
-ProgramStateRef MallocChecker::addExtentSize(CheckerContext &C,
-                                             const CXXNewExpr *NE,
-                                             ProgramStateRef State,
-                                             SVal Target) {
-  if (!State)
-    return nullptr;
-  SValBuilder &svalBuilder = C.getSValBuilder();
-  SVal ElementCount;
-  const SubRegion *Region;
-  if (NE->isArray()) {
-    const Expr *SizeExpr = *NE->getArraySize();
-    ElementCount = C.getSVal(SizeExpr);
-    // Store the extent size for the (symbolic)region
-    // containing the elements.
-    Region = Target.getAsRegion()
-                 ->getAs<SubRegion>()
-                 ->StripCasts()
-                 ->getAs<SubRegion>();
-  } else {
-    ElementCount = svalBuilder.makeIntVal(1, true);
-    Region = Target.getAsRegion()->getAs<SubRegion>();
-  }
-  assert(Region);
-
-  // Set the region's extent equal to the Size in Bytes.
-  QualType ElementType = NE->getAllocatedType();
-  ASTContext &AstContext = C.getASTContext();
-  CharUnits TypeSize = AstContext.getTypeSizeInChars(ElementType);
-
-  if (ElementCount.getAs<NonLoc>()) {
-    DefinedOrUnknownSVal Extent = Region->getExtent(svalBuilder);
-    // size in Bytes = ElementCount*TypeSize
-    SVal SizeInBytes = svalBuilder.evalBinOpNN(
-        State, BO_Mul, ElementCount.castAs<NonLoc>(),
-        svalBuilder.makeArrayIndex(TypeSize.getQuantity()),
-        svalBuilder.getArrayIndexType());
-    DefinedOrUnknownSVal extentMatchesSize = svalBuilder.evalEQ(
-        State, Extent, SizeInBytes.castAs<DefinedOrUnknownSVal>());
-    State = State->assume(extentMatchesSize, true);
-  }
-  return State;
-}
-
-void MallocChecker::checkPreStmt(const CXXDeleteExpr *DE,
-                                 CheckerContext &C) const {
-
-  if (!ChecksEnabled[CK_NewDeleteChecker])
-    if (SymbolRef Sym = C.getSVal(DE->getArgument()).getAsSymbol())
-      checkUseAfterFree(Sym, C, DE->getArgument());
-
-  if (!isStandardNewDelete(DE->getOperatorDelete(), C.getASTContext()))
-    return;
-
-  ProgramStateRef State = C.getState();
-  bool ReleasedAllocated;
-  State = FreeMemAux(C, DE->getArgument(), DE, State,
-                     /*Hold*/false, ReleasedAllocated);
-
-  C.addTransition(State);
-}
-
-static bool isKnownDeallocObjCMethodName(const ObjCMethodCall &Call) {
-  // If the first selector piece is one of the names below, assume that the
-  // object takes ownership of the memory, promising to eventually deallocate it
-  // with free().
-  // Ex:  [NSData dataWithBytesNoCopy:bytes length:10];
-  // (...unless a 'freeWhenDone' parameter is false, but that's checked later.)
-  StringRef FirstSlot = Call.getSelector().getNameForSlot(0);
-  return FirstSlot == "dataWithBytesNoCopy" ||
-         FirstSlot == "initWithBytesNoCopy" ||
-         FirstSlot == "initWithCharactersNoCopy";
-}
-
-static Optional<bool> getFreeWhenDoneArg(const ObjCMethodCall &Call) {
-  Selector S = Call.getSelector();
-
-  // FIXME: We should not rely on fully-constrained symbols being folded.
-  for (unsigned i = 1; i < S.getNumArgs(); ++i)
-    if (S.getNameForSlot(i).equals("freeWhenDone"))
-      return !Call.getArgSVal(i).isZeroConstant();
-
-  return None;
-}
-
-void MallocChecker::checkPostObjCMessage(const ObjCMethodCall &Call,
-                                         CheckerContext &C) const {
-  if (C.wasInlined)
-    return;
-
-  if (!isKnownDeallocObjCMethodName(Call))
-    return;
-
-  if (Optional<bool> FreeWhenDone = getFreeWhenDoneArg(Call))
-    if (!*FreeWhenDone)
-      return;
-
-  bool ReleasedAllocatedMemory;
-  ProgramStateRef State = FreeMemAux(C, Call.getArgExpr(0),
-                                     Call.getOriginExpr(), C.getState(),
-                                     /*Hold=*/true, ReleasedAllocatedMemory,
-                                     /*ReturnsNullOnFailure=*/true);
-
-  C.addTransition(State);
-}
-
-ProgramStateRef
-MallocChecker::MallocMemReturnsAttr(CheckerContext &C, const CallExpr *CE,
-                                    const OwnershipAttr *Att,
-                                    ProgramStateRef State) const {
-  if (!State)
-    return nullptr;
-
-  if (Att->getModule() != II_malloc)
-    return nullptr;
-
-  OwnershipAttr::args_iterator I = Att->args_begin(), E = Att->args_end();
-  if (I != E) {
-    return MallocMemAux(C, CE, CE->getArg(I->getASTIndex()), UndefinedVal(),
-                        State);
-  }
-  return MallocMemAux(C, CE, UnknownVal(), UndefinedVal(), State);
-}
-
-ProgramStateRef MallocChecker::MallocMemAux(CheckerContext &C,
-                                            const CallExpr *CE,
-                                            const Expr *SizeEx, SVal Init,
-                                            ProgramStateRef State,
-                                            AllocationFamily Family) {
-  if (!State)
-    return nullptr;
-
-  return MallocMemAux(C, CE, C.getSVal(SizeEx), Init, State, Family);
-}
-
-ProgramStateRef MallocChecker::MallocMemAux(CheckerContext &C,
-                                           const CallExpr *CE,
-                                           SVal Size, SVal Init,
-                                           ProgramStateRef State,
-                                           AllocationFamily Family) {
-  if (!State)
-    return nullptr;
-
-  // We expect the malloc functions to return a pointer.
-  if (!Loc::isLocType(CE->getType()))
-    return nullptr;
-
-  // Bind the return value to the symbolic value from the heap region.
-  // TODO: We could rewrite post visit to eval call; 'malloc' does not have
-  // side effects other than what we model here.
-  unsigned Count = C.blockCount();
-  SValBuilder &svalBuilder = C.getSValBuilder();
-  const LocationContext *LCtx = C.getPredecessor()->getLocationContext();
-  DefinedSVal RetVal = svalBuilder.getConjuredHeapSymbolVal(CE, LCtx, Count)
-      .castAs<DefinedSVal>();
-  State = State->BindExpr(CE, C.getLocationContext(), RetVal);
-
-  // Fill the region with the initialization value.
-  State = State->bindDefaultInitial(RetVal, Init, LCtx);
-
-  // Set the region's extent equal to the Size parameter.
-  const SymbolicRegion *R =
-      dyn_cast_or_null<SymbolicRegion>(RetVal.getAsRegion());
-  if (!R)
-    return nullptr;
-  if (Optional<DefinedOrUnknownSVal> DefinedSize =
-          Size.getAs<DefinedOrUnknownSVal>()) {
-    SValBuilder &svalBuilder = C.getSValBuilder();
-    DefinedOrUnknownSVal Extent = R->getExtent(svalBuilder);
-    DefinedOrUnknownSVal extentMatchesSize =
-        svalBuilder.evalEQ(State, Extent, *DefinedSize);
-
-    State = State->assume(extentMatchesSize, true);
-    assert(State);
-  }
-
-  return MallocUpdateRefState(C, CE, State, Family);
-}
-
-ProgramStateRef MallocChecker::MallocUpdateRefState(CheckerContext &C,
-                                                    const Expr *E,
-                                                    ProgramStateRef State,
-                                                    AllocationFamily Family,
-                                                    Optional<SVal> RetVal) {
-  if (!State)
-    return nullptr;
-
-  // Get the return value.
-  if (!RetVal)
-    RetVal = C.getSVal(E);
-
-  // We expect the malloc functions to return a pointer.
-  if (!RetVal->getAs<Loc>())
-    return nullptr;
-
-  SymbolRef Sym = RetVal->getAsLocSymbol();
-  // This is a return value of a function that was not inlined, such as malloc()
-  // or new(). We've checked that in the caller. Therefore, it must be a symbol.
-  assert(Sym);
-
-  // Set the symbol's state to Allocated.
-  return State->set<RegionState>(Sym, RefState::getAllocated(Family, E));
-}
-
-ProgramStateRef MallocChecker::FreeMemAttr(CheckerContext &C,
-                                           const CallExpr *CE,
-                                           const OwnershipAttr *Att,
-                                           ProgramStateRef State) const {
-  if (!State)
-    return nullptr;
-
-  if (Att->getModule() != II_malloc)
-    return nullptr;
-
-  bool ReleasedAllocated = false;
-
-  for (const auto &Arg : Att->args()) {
-    ProgramStateRef StateI = FreeMemAux(
-        C, CE, State, Arg.getASTIndex(),
-        Att->getOwnKind() == OwnershipAttr::Holds, ReleasedAllocated);
-    if (StateI)
-      State = StateI;
-  }
-  return State;
-}
-
-ProgramStateRef MallocChecker::FreeMemAux(CheckerContext &C,
-                                          const CallExpr *CE,
-                                          ProgramStateRef State,
-                                          unsigned Num,
-                                          bool Hold,
-                                          bool &ReleasedAllocated,
-                                          bool ReturnsNullOnFailure) const {
-  if (!State)
-    return nullptr;
-
-  if (CE->getNumArgs() < (Num + 1))
-    return nullptr;
-
-  return FreeMemAux(C, CE->getArg(Num), CE, State, Hold,
-                    ReleasedAllocated, ReturnsNullOnFailure);
-}
-
-/// Checks if the previous call to free on the given symbol failed - if free
-/// failed, returns true. Also, returns the corresponding return value symbol.
-static bool didPreviousFreeFail(ProgramStateRef State,
-                                SymbolRef Sym, SymbolRef &RetStatusSymbol) {
-  const SymbolRef *Ret = State->get<FreeReturnValue>(Sym);
-  if (Ret) {
-    assert(*Ret && "We should not store the null return symbol");
-    ConstraintManager &CMgr = State->getConstraintManager();
-    ConditionTruthVal FreeFailed = CMgr.isNull(State, *Ret);
-    RetStatusSymbol = *Ret;
-    return FreeFailed.isConstrainedTrue();
-  }
-  return false;
-}
-
-AllocationFamily MallocChecker::getAllocationFamily(CheckerContext &C,
-                                                    const Stmt *S) const {
-  if (!S)
-    return AF_None;
-
-  if (const CallExpr *CE = dyn_cast<CallExpr>(S)) {
-    const FunctionDecl *FD = C.getCalleeDecl(CE);
-
-    if (!FD)
-      FD = dyn_cast<FunctionDecl>(CE->getCalleeDecl());
-
-    ASTContext &Ctx = C.getASTContext();
-
-    if (isCMemFunction(FD, Ctx, AF_Malloc, MemoryOperationKind::MOK_Any))
-      return AF_Malloc;
-
-    if (isStandardNewDelete(FD, Ctx)) {
-      OverloadedOperatorKind Kind = FD->getOverloadedOperator();
-      if (Kind == OO_New || Kind == OO_Delete)
-        return AF_CXXNew;
-      else if (Kind == OO_Array_New || Kind == OO_Array_Delete)
-        return AF_CXXNewArray;
-    }
-
-    if (isCMemFunction(FD, Ctx, AF_IfNameIndex, MemoryOperationKind::MOK_Any))
-      return AF_IfNameIndex;
-
-    if (isCMemFunction(FD, Ctx, AF_Alloca, MemoryOperationKind::MOK_Any))
-      return AF_Alloca;
-
-    return AF_None;
-  }
-
-  if (const CXXNewExpr *NE = dyn_cast<CXXNewExpr>(S))
-    return NE->isArray() ? AF_CXXNewArray : AF_CXXNew;
-
-  if (const CXXDeleteExpr *DE = dyn_cast<CXXDeleteExpr>(S))
-    return DE->isArrayForm() ? AF_CXXNewArray : AF_CXXNew;
-
-  if (isa<ObjCMessageExpr>(S))
-    return AF_Malloc;
-
-  return AF_None;
-}
-
-bool MallocChecker::printAllocDeallocName(raw_ostream &os, CheckerContext &C,
-                                          const Expr *E) const {
-  if (const CallExpr *CE = dyn_cast<CallExpr>(E)) {
-    // FIXME: This doesn't handle indirect calls.
-    const FunctionDecl *FD = CE->getDirectCallee();
-    if (!FD)
-      return false;
-
-    os << *FD;
-    if (!FD->isOverloadedOperator())
-      os << "()";
-    return true;
-  }
-
-  if (const ObjCMessageExpr *Msg = dyn_cast<ObjCMessageExpr>(E)) {
-    if (Msg->isInstanceMessage())
-      os << "-";
-    else
-      os << "+";
-    Msg->getSelector().print(os);
-    return true;
-  }
-
-  if (const CXXNewExpr *NE = dyn_cast<CXXNewExpr>(E)) {
-    os << "'"
-       << getOperatorSpelling(NE->getOperatorNew()->getOverloadedOperator())
-       << "'";
-    return true;
-  }
-
-  if (const CXXDeleteExpr *DE = dyn_cast<CXXDeleteExpr>(E)) {
-    os << "'"
-       << getOperatorSpelling(DE->getOperatorDelete()->getOverloadedOperator())
-       << "'";
-    return true;
-  }
-
-  return false;
-}
-
-void MallocChecker::printExpectedAllocName(raw_ostream &os, CheckerContext &C,
-                                           const Expr *E) const {
-  AllocationFamily Family = getAllocationFamily(C, E);
-
-  switch(Family) {
-    case AF_Malloc: os << "malloc()"; return;
-    case AF_CXXNew: os << "'new'"; return;
-    case AF_CXXNewArray: os << "'new[]'"; return;
-    case AF_IfNameIndex: os << "'if_nameindex()'"; return;
-    case AF_InnerBuffer: os << "container-specific allocator"; return;
-    case AF_Alloca:
-    case AF_None: llvm_unreachable("not a deallocation expression");
-  }
-}
-
-void MallocChecker::printExpectedDeallocName(raw_ostream &os,
-                                             AllocationFamily Family) const {
-  switch(Family) {
-    case AF_Malloc: os << "free()"; return;
-    case AF_CXXNew: os << "'delete'"; return;
-    case AF_CXXNewArray: os << "'delete[]'"; return;
-    case AF_IfNameIndex: os << "'if_freenameindex()'"; return;
-    case AF_InnerBuffer: os << "container-specific deallocator"; return;
-    case AF_Alloca:
-    case AF_None: llvm_unreachable("suspicious argument");
-  }
-}
-
-ProgramStateRef MallocChecker::FreeMemAux(CheckerContext &C,
-                                          const Expr *ArgExpr,
-                                          const Expr *ParentExpr,
-                                          ProgramStateRef State,
-                                          bool Hold,
-                                          bool &ReleasedAllocated,
-                                          bool ReturnsNullOnFailure) const {
-
-  if (!State)
-    return nullptr;
-
-  SVal ArgVal = C.getSVal(ArgExpr);
-  if (!ArgVal.getAs<DefinedOrUnknownSVal>())
-    return nullptr;
-  DefinedOrUnknownSVal location = ArgVal.castAs<DefinedOrUnknownSVal>();
-
-  // Check for null dereferences.
-  if (!location.getAs<Loc>())
-    return nullptr;
-
-  // The explicit NULL case, no operation is performed.
-  ProgramStateRef notNullState, nullState;
-  std::tie(notNullState, nullState) = State->assume(location);
-  if (nullState && !notNullState)
-    return nullptr;
-
-  // Unknown values could easily be okay
-  // Undefined values are handled elsewhere
-  if (ArgVal.isUnknownOrUndef())
-    return nullptr;
-
-  const MemRegion *R = ArgVal.getAsRegion();
-
-  // Nonlocs can't be freed, of course.
-  // Non-region locations (labels and fixed addresses) also shouldn't be freed.
-  if (!R) {
-    ReportBadFree(C, ArgVal, ArgExpr->getSourceRange(), ParentExpr);
-    return nullptr;
-  }
-
-  R = R->StripCasts();
-
-  // Blocks might show up as heap data, but should not be free()d
-  if (isa<BlockDataRegion>(R)) {
-    ReportBadFree(C, ArgVal, ArgExpr->getSourceRange(), ParentExpr);
-    return nullptr;
-  }
-
-  const MemSpaceRegion *MS = R->getMemorySpace();
-
-  // Parameters, locals, statics, globals, and memory returned by
-  // __builtin_alloca() shouldn't be freed.
-  if (!(isa<UnknownSpaceRegion>(MS) || isa<HeapSpaceRegion>(MS))) {
-    // FIXME: at the time this code was written, malloc() regions were
-    // represented by conjured symbols, which are all in UnknownSpaceRegion.
-    // This means that there isn't actually anything from HeapSpaceRegion
-    // that should be freed, even though we allow it here.
-    // Of course, free() can work on memory allocated outside the current
-    // function, so UnknownSpaceRegion is always a possibility.
-    // False negatives are better than false positives.
-
-    if (isa<AllocaRegion>(R))
-      ReportFreeAlloca(C, ArgVal, ArgExpr->getSourceRange());
-    else
-      ReportBadFree(C, ArgVal, ArgExpr->getSourceRange(), ParentExpr);
-
-    return nullptr;
-  }
-
-  const SymbolicRegion *SrBase = dyn_cast<SymbolicRegion>(R->getBaseRegion());
-  // Various cases could lead to non-symbol values here.
-  // For now, ignore them.
-  if (!SrBase)
-    return nullptr;
-
-  SymbolRef SymBase = SrBase->getSymbol();
-  const RefState *RsBase = State->get<RegionState>(SymBase);
-  SymbolRef PreviousRetStatusSymbol = nullptr;
-
-  if (RsBase) {
-
-    // Memory returned by alloca() shouldn't be freed.
-    if (RsBase->getAllocationFamily() == AF_Alloca) {
-      ReportFreeAlloca(C, ArgVal, ArgExpr->getSourceRange());
-      return nullptr;
-    }
-
-    // Check for double free first.
-    if ((RsBase->isReleased() || RsBase->isRelinquished()) &&
-        !didPreviousFreeFail(State, SymBase, PreviousRetStatusSymbol)) {
-      ReportDoubleFree(C, ParentExpr->getSourceRange(), RsBase->isReleased(),
-                       SymBase, PreviousRetStatusSymbol);
-      return nullptr;
-
-    // If the pointer is allocated or escaped, but we are now trying to free it,
-    // check that the call to free is proper.
-    } else if (RsBase->isAllocated() || RsBase->isAllocatedOfSizeZero() ||
-               RsBase->isEscaped()) {
-
-      // Check if an expected deallocation function matches the real one.
-      bool DeallocMatchesAlloc =
-        RsBase->getAllocationFamily() == getAllocationFamily(C, ParentExpr);
-      if (!DeallocMatchesAlloc) {
-        ReportMismatchedDealloc(C, ArgExpr->getSourceRange(),
-                                ParentExpr, RsBase, SymBase, Hold);
-        return nullptr;
-      }
-
-      // Check if the memory location being freed is the actual location
-      // allocated, or an offset.
-      RegionOffset Offset = R->getAsOffset();
-      if (Offset.isValid() &&
-          !Offset.hasSymbolicOffset() &&
-          Offset.getOffset() != 0) {
-        const Expr *AllocExpr = cast<Expr>(RsBase->getStmt());
-        ReportOffsetFree(C, ArgVal, ArgExpr->getSourceRange(), ParentExpr,
-                         AllocExpr);
-        return nullptr;
-      }
-    }
-  }
-
-  if (SymBase->getType()->isFunctionPointerType()) {
-    ReportFunctionPointerFree(C, ArgVal, ArgExpr->getSourceRange(), ParentExpr);
-    return nullptr;
-  }
-
-  ReleasedAllocated = (RsBase != nullptr) && (RsBase->isAllocated() ||
-                                              RsBase->isAllocatedOfSizeZero());
-
-  // Clean out the info on previous call to free return info.
-  State = State->remove<FreeReturnValue>(SymBase);
-
-  // Keep track of the return value. If it is NULL, we will know that free
-  // failed.
-  if (ReturnsNullOnFailure) {
-    SVal RetVal = C.getSVal(ParentExpr);
-    SymbolRef RetStatusSymbol = RetVal.getAsSymbol();
-    if (RetStatusSymbol) {
-      C.getSymbolManager().addSymbolDependency(SymBase, RetStatusSymbol);
-      State = State->set<FreeReturnValue>(SymBase, RetStatusSymbol);
-    }
-  }
-
-  AllocationFamily Family = RsBase ? RsBase->getAllocationFamily()
-                                   : getAllocationFamily(C, ParentExpr);
-  // Normal free.
-  if (Hold)
-    return State->set<RegionState>(SymBase,
-                                   RefState::getRelinquished(Family,
-                                                             ParentExpr));
-
-  return State->set<RegionState>(SymBase,
-                                 RefState::getReleased(Family, ParentExpr));
-}
-
-Optional<MallocChecker::CheckKind>
-MallocChecker::getCheckIfTracked(AllocationFamily Family,
-                                 bool IsALeakCheck) const {
-  switch (Family) {
-  case AF_Malloc:
-  case AF_Alloca:
-  case AF_IfNameIndex: {
-    if (ChecksEnabled[CK_MallocChecker])
-      return CK_MallocChecker;
-    return None;
-  }
-  case AF_CXXNew:
-  case AF_CXXNewArray: {
-    if (IsALeakCheck) {
-      if (ChecksEnabled[CK_NewDeleteLeaksChecker])
-        return CK_NewDeleteLeaksChecker;
-    }
-    else {
-      if (ChecksEnabled[CK_NewDeleteChecker])
-        return CK_NewDeleteChecker;
-    }
-    return None;
-  }
-  case AF_InnerBuffer: {
-    if (ChecksEnabled[CK_InnerPointerChecker])
-      return CK_InnerPointerChecker;
-    return None;
-  }
-  case AF_None: {
-    llvm_unreachable("no family");
-  }
-  }
-  llvm_unreachable("unhandled family");
-}
-
-Optional<MallocChecker::CheckKind>
-MallocChecker::getCheckIfTracked(CheckerContext &C,
-                                 const Stmt *AllocDeallocStmt,
-                                 bool IsALeakCheck) const {
-  return getCheckIfTracked(getAllocationFamily(C, AllocDeallocStmt),
-                           IsALeakCheck);
-}
-
-Optional<MallocChecker::CheckKind>
-MallocChecker::getCheckIfTracked(CheckerContext &C, SymbolRef Sym,
-                                 bool IsALeakCheck) const {
-  if (C.getState()->contains<ReallocSizeZeroSymbols>(Sym))
-    return CK_MallocChecker;
-
-  const RefState *RS = C.getState()->get<RegionState>(Sym);
-  assert(RS);
-  return getCheckIfTracked(RS->getAllocationFamily(), IsALeakCheck);
-}
-
-bool MallocChecker::SummarizeValue(raw_ostream &os, SVal V) {
-  if (Optional<nonloc::ConcreteInt> IntVal = V.getAs<nonloc::ConcreteInt>())
-    os << "an integer (" << IntVal->getValue() << ")";
-  else if (Optional<loc::ConcreteInt> ConstAddr = V.getAs<loc::ConcreteInt>())
-    os << "a constant address (" << ConstAddr->getValue() << ")";
-  else if (Optional<loc::GotoLabel> Label = V.getAs<loc::GotoLabel>())
-    os << "the address of the label '" << Label->getLabel()->getName() << "'";
-  else
-    return false;
-
-  return true;
-}
-
-bool MallocChecker::SummarizeRegion(raw_ostream &os,
-                                    const MemRegion *MR) {
-  switch (MR->getKind()) {
-  case MemRegion::FunctionCodeRegionKind: {
-    const NamedDecl *FD = cast<FunctionCodeRegion>(MR)->getDecl();
-    if (FD)
-      os << "the address of the function '" << *FD << '\'';
-    else
-      os << "the address of a function";
-    return true;
-  }
-  case MemRegion::BlockCodeRegionKind:
-    os << "block text";
-    return true;
-  case MemRegion::BlockDataRegionKind:
-    // FIXME: where the block came from?
-    os << "a block";
-    return true;
-  default: {
-    const MemSpaceRegion *MS = MR->getMemorySpace();
-
-    if (isa<StackLocalsSpaceRegion>(MS)) {
-      const VarRegion *VR = dyn_cast<VarRegion>(MR);
-      const VarDecl *VD;
-      if (VR)
-        VD = VR->getDecl();
-      else
-        VD = nullptr;
-
-      if (VD)
-        os << "the address of the local variable '" << VD->getName() << "'";
-      else
-        os << "the address of a local stack variable";
-      return true;
-    }
-
-    if (isa<StackArgumentsSpaceRegion>(MS)) {
-      const VarRegion *VR = dyn_cast<VarRegion>(MR);
-      const VarDecl *VD;
-      if (VR)
-        VD = VR->getDecl();
-      else
-        VD = nullptr;
-
-      if (VD)
-        os << "the address of the parameter '" << VD->getName() << "'";
-      else
-        os << "the address of a parameter";
-      return true;
-    }
-
-    if (isa<GlobalsSpaceRegion>(MS)) {
-      const VarRegion *VR = dyn_cast<VarRegion>(MR);
-      const VarDecl *VD;
-      if (VR)
-        VD = VR->getDecl();
-      else
-        VD = nullptr;
-
-      if (VD) {
-        if (VD->isStaticLocal())
-          os << "the address of the static variable '" << VD->getName() << "'";
-        else
-          os << "the address of the global variable '" << VD->getName() << "'";
-      } else
-        os << "the address of a global variable";
-      return true;
-    }
-
-    return false;
-  }
-  }
-}
-
-void MallocChecker::ReportBadFree(CheckerContext &C, SVal ArgVal,
-                                  SourceRange Range,
-                                  const Expr *DeallocExpr) const {
-
-  if (!ChecksEnabled[CK_MallocChecker] &&
-      !ChecksEnabled[CK_NewDeleteChecker])
-    return;
-
-  Optional<MallocChecker::CheckKind> CheckKind =
-      getCheckIfTracked(C, DeallocExpr);
-  if (!CheckKind.hasValue())
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_BadFree[*CheckKind])
-      BT_BadFree[*CheckKind].reset(new BugType(
-          CheckNames[*CheckKind], "Bad free", categories::MemoryError));
-
-    SmallString<100> buf;
-    llvm::raw_svector_ostream os(buf);
-
-    const MemRegion *MR = ArgVal.getAsRegion();
-    while (const ElementRegion *ER = dyn_cast_or_null<ElementRegion>(MR))
-      MR = ER->getSuperRegion();
-
-    os << "Argument to ";
-    if (!printAllocDeallocName(os, C, DeallocExpr))
-      os << "deallocator";
-
-    os << " is ";
-    bool Summarized = MR ? SummarizeRegion(os, MR)
-                         : SummarizeValue(os, ArgVal);
-    if (Summarized)
-      os << ", which is not memory allocated by ";
-    else
-      os << "not memory allocated by ";
-
-    printExpectedAllocName(os, C, DeallocExpr);
-
-    auto R = llvm::make_unique<BugReport>(*BT_BadFree[*CheckKind], os.str(), N);
-    R->markInteresting(MR);
-    R->addRange(Range);
-    C.emitReport(std::move(R));
-  }
-}
-
-void MallocChecker::ReportFreeAlloca(CheckerContext &C, SVal ArgVal,
-                                     SourceRange Range) const {
-
-  Optional<MallocChecker::CheckKind> CheckKind;
-
-  if (ChecksEnabled[CK_MallocChecker])
-    CheckKind = CK_MallocChecker;
-  else if (ChecksEnabled[CK_MismatchedDeallocatorChecker])
-    CheckKind = CK_MismatchedDeallocatorChecker;
-  else
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_FreeAlloca[*CheckKind])
-      BT_FreeAlloca[*CheckKind].reset(new BugType(
-          CheckNames[*CheckKind], "Free alloca()", categories::MemoryError));
-
-    auto R = llvm::make_unique<BugReport>(
-        *BT_FreeAlloca[*CheckKind],
-        "Memory allocated by alloca() should not be deallocated", N);
-    R->markInteresting(ArgVal.getAsRegion());
-    R->addRange(Range);
-    C.emitReport(std::move(R));
-  }
-}
-
-void MallocChecker::ReportMismatchedDealloc(CheckerContext &C,
-                                            SourceRange Range,
-                                            const Expr *DeallocExpr,
-                                            const RefState *RS,
-                                            SymbolRef Sym,
-                                            bool OwnershipTransferred) const {
-
-  if (!ChecksEnabled[CK_MismatchedDeallocatorChecker])
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_MismatchedDealloc)
-      BT_MismatchedDealloc.reset(
-          new BugType(CheckNames[CK_MismatchedDeallocatorChecker],
-                      "Bad deallocator", categories::MemoryError));
-
-    SmallString<100> buf;
-    llvm::raw_svector_ostream os(buf);
-
-    const Expr *AllocExpr = cast<Expr>(RS->getStmt());
-    SmallString<20> AllocBuf;
-    llvm::raw_svector_ostream AllocOs(AllocBuf);
-    SmallString<20> DeallocBuf;
-    llvm::raw_svector_ostream DeallocOs(DeallocBuf);
-
-    if (OwnershipTransferred) {
-      if (printAllocDeallocName(DeallocOs, C, DeallocExpr))
-        os << DeallocOs.str() << " cannot";
-      else
-        os << "Cannot";
-
-      os << " take ownership of memory";
-
-      if (printAllocDeallocName(AllocOs, C, AllocExpr))
-        os << " allocated by " << AllocOs.str();
-    } else {
-      os << "Memory";
-      if (printAllocDeallocName(AllocOs, C, AllocExpr))
-        os << " allocated by " << AllocOs.str();
-
-      os << " should be deallocated by ";
-        printExpectedDeallocName(os, RS->getAllocationFamily());
-
-      if (printAllocDeallocName(DeallocOs, C, DeallocExpr))
-        os << ", not " << DeallocOs.str();
-    }
-
-    auto R = llvm::make_unique<BugReport>(*BT_MismatchedDealloc, os.str(), N);
-    R->markInteresting(Sym);
-    R->addRange(Range);
-    R->addVisitor(llvm::make_unique<MallocBugVisitor>(Sym));
-    C.emitReport(std::move(R));
-  }
-}
-
-void MallocChecker::ReportOffsetFree(CheckerContext &C, SVal ArgVal,
-                                     SourceRange Range, const Expr *DeallocExpr,
-                                     const Expr *AllocExpr) const {
-
-
-  if (!ChecksEnabled[CK_MallocChecker] &&
-      !ChecksEnabled[CK_NewDeleteChecker])
-    return;
-
-  Optional<MallocChecker::CheckKind> CheckKind =
-      getCheckIfTracked(C, AllocExpr);
-  if (!CheckKind.hasValue())
-    return;
-
-  ExplodedNode *N = C.generateErrorNode();
-  if (!N)
-    return;
-
-  if (!BT_OffsetFree[*CheckKind])
-    BT_OffsetFree[*CheckKind].reset(new BugType(
-        CheckNames[*CheckKind], "Offset free", categories::MemoryError));
-
-  SmallString<100> buf;
-  llvm::raw_svector_ostream os(buf);
-  SmallString<20> AllocNameBuf;
-  llvm::raw_svector_ostream AllocNameOs(AllocNameBuf);
-
-  const MemRegion *MR = ArgVal.getAsRegion();
-  assert(MR && "Only MemRegion based symbols can have offset free errors");
-
-  RegionOffset Offset = MR->getAsOffset();
-  assert((Offset.isValid() &&
-          !Offset.hasSymbolicOffset() &&
-          Offset.getOffset() != 0) &&
-         "Only symbols with a valid offset can have offset free errors");
-
-  int offsetBytes = Offset.getOffset() / C.getASTContext().getCharWidth();
-
-  os << "Argument to ";
-  if (!printAllocDeallocName(os, C, DeallocExpr))
-    os << "deallocator";
-  os << " is offset by "
-     << offsetBytes
-     << " "
-     << ((abs(offsetBytes) > 1) ? "bytes" : "byte")
-     << " from the start of ";
-  if (AllocExpr && printAllocDeallocName(AllocNameOs, C, AllocExpr))
-    os << "memory allocated by " << AllocNameOs.str();
-  else
-    os << "allocated memory";
-
-  auto R = llvm::make_unique<BugReport>(*BT_OffsetFree[*CheckKind], os.str(), N);
-  R->markInteresting(MR->getBaseRegion());
-  R->addRange(Range);
-  C.emitReport(std::move(R));
-}
-
-void MallocChecker::ReportUseAfterFree(CheckerContext &C, SourceRange Range,
-                                       SymbolRef Sym) const {
-
-  if (!ChecksEnabled[CK_MallocChecker] &&
-      !ChecksEnabled[CK_NewDeleteChecker] &&
-      !ChecksEnabled[CK_InnerPointerChecker])
-    return;
-
-  Optional<MallocChecker::CheckKind> CheckKind = getCheckIfTracked(C, Sym);
-  if (!CheckKind.hasValue())
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_UseFree[*CheckKind])
-      BT_UseFree[*CheckKind].reset(new BugType(
-          CheckNames[*CheckKind], "Use-after-free", categories::MemoryError));
-
-    AllocationFamily AF =
-        C.getState()->get<RegionState>(Sym)->getAllocationFamily();
-
-    auto R = llvm::make_unique<BugReport>(*BT_UseFree[*CheckKind],
-        AF == AF_InnerBuffer
-              ? "Inner pointer of container used after re/deallocation"
-              : "Use of memory after it is freed",
-        N);
-
-    R->markInteresting(Sym);
-    R->addRange(Range);
-    R->addVisitor(llvm::make_unique<MallocBugVisitor>(Sym));
-
-    if (AF == AF_InnerBuffer)
-      R->addVisitor(allocation_state::getInnerPointerBRVisitor(Sym));
-
-    C.emitReport(std::move(R));
-  }
-}
-
-void MallocChecker::ReportDoubleFree(CheckerContext &C, SourceRange Range,
-                                     bool Released, SymbolRef Sym,
-                                     SymbolRef PrevSym) const {
-
-  if (!ChecksEnabled[CK_MallocChecker] &&
-      !ChecksEnabled[CK_NewDeleteChecker])
-    return;
-
-  Optional<MallocChecker::CheckKind> CheckKind = getCheckIfTracked(C, Sym);
-  if (!CheckKind.hasValue())
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_DoubleFree[*CheckKind])
-      BT_DoubleFree[*CheckKind].reset(new BugType(
-          CheckNames[*CheckKind], "Double free", categories::MemoryError));
-
-    auto R = llvm::make_unique<BugReport>(
-        *BT_DoubleFree[*CheckKind],
-        (Released ? "Attempt to free released memory"
-                  : "Attempt to free non-owned memory"),
-        N);
-    R->addRange(Range);
-    R->markInteresting(Sym);
-    if (PrevSym)
-      R->markInteresting(PrevSym);
-    R->addVisitor(llvm::make_unique<MallocBugVisitor>(Sym));
-    C.emitReport(std::move(R));
-  }
-}
-
-void MallocChecker::ReportDoubleDelete(CheckerContext &C, SymbolRef Sym) const {
-
-  if (!ChecksEnabled[CK_NewDeleteChecker])
-    return;
-
-  Optional<MallocChecker::CheckKind> CheckKind = getCheckIfTracked(C, Sym);
-  if (!CheckKind.hasValue())
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_DoubleDelete)
-      BT_DoubleDelete.reset(new BugType(CheckNames[CK_NewDeleteChecker],
-                                        "Double delete",
-                                        categories::MemoryError));
-
-    auto R = llvm::make_unique<BugReport>(
-        *BT_DoubleDelete, "Attempt to delete released memory", N);
-
-    R->markInteresting(Sym);
-    R->addVisitor(llvm::make_unique<MallocBugVisitor>(Sym));
-    C.emitReport(std::move(R));
-  }
-}
-
-void MallocChecker::ReportUseZeroAllocated(CheckerContext &C,
-                                           SourceRange Range,
-                                           SymbolRef Sym) const {
-
-  if (!ChecksEnabled[CK_MallocChecker] &&
-      !ChecksEnabled[CK_NewDeleteChecker])
-    return;
-
-  Optional<MallocChecker::CheckKind> CheckKind = getCheckIfTracked(C, Sym);
-
-  if (!CheckKind.hasValue())
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_UseZerroAllocated[*CheckKind])
-      BT_UseZerroAllocated[*CheckKind].reset(
-          new BugType(CheckNames[*CheckKind], "Use of zero allocated",
-                      categories::MemoryError));
-
-    auto R = llvm::make_unique<BugReport>(*BT_UseZerroAllocated[*CheckKind],
-                                         "Use of zero-allocated memory", N);
-
-    R->addRange(Range);
-    if (Sym) {
-      R->markInteresting(Sym);
-      R->addVisitor(llvm::make_unique<MallocBugVisitor>(Sym));
-    }
-    C.emitReport(std::move(R));
-  }
-}
-
-void MallocChecker::ReportFunctionPointerFree(CheckerContext &C, SVal ArgVal,
-                                              SourceRange Range,
-                                              const Expr *FreeExpr) const {
-  if (!ChecksEnabled[CK_MallocChecker])
-    return;
-
-  Optional<MallocChecker::CheckKind> CheckKind = getCheckIfTracked(C, FreeExpr);
-  if (!CheckKind.hasValue())
-    return;
-
-  if (ExplodedNode *N = C.generateErrorNode()) {
-    if (!BT_BadFree[*CheckKind])
-      BT_BadFree[*CheckKind].reset(new BugType(
-          CheckNames[*CheckKind], "Bad free", categories::MemoryError));
-
-    SmallString<100> Buf;
-    llvm::raw_svector_ostream Os(Buf);
-
-    const MemRegion *MR = ArgVal.getAsRegion();
-    while (const ElementRegion *ER = dyn_cast_or_null<ElementRegion>(MR))
-      MR = ER->getSuperRegion();
-
-    Os << "Argument to ";
-    if (!printAllocDeallocName(Os, C, FreeExpr))
-      Os << "deallocator";
-
-    Os << " is a function pointer";
-
-    auto R = llvm::make_unique<BugReport>(*BT_BadFree[*CheckKind], Os.str(), N);
-    R->markInteresting(MR);
-    R->addRange(Range);
-    C.emitReport(std::move(R));
-  }
-}
-
-ProgramStateRef MallocChecker::ReallocMemAux(CheckerContext &C,
-                                             const CallExpr *CE,
-                                             bool FreesOnFail,
-                                             ProgramStateRef State,
-                                             bool SuffixWithN) const {
-  if (!State)
-    return nullptr;
-
-  if (SuffixWithN && CE->getNumArgs() < 3)
-    return nullptr;
-  else if (CE->getNumArgs() < 2)
-    return nullptr;
-
-  const Expr *arg0Expr = CE->getArg(0);
-  SVal Arg0Val = C.getSVal(arg0Expr);
-  if (!Arg0Val.getAs<DefinedOrUnknownSVal>())
-    return nullptr;
-  DefinedOrUnknownSVal arg0Val = Arg0Val.castAs<DefinedOrUnknownSVal>();
-
-  SValBuilder &svalBuilder = C.getSValBuilder();
-
-  DefinedOrUnknownSVal PtrEQ =
-    svalBuilder.evalEQ(State, arg0Val, svalBuilder.makeNull());
-
-  // Get the size argument.
-  const Expr *Arg1 = CE->getArg(1);
-
-  // Get the value of the size argument.
-  SVal TotalSize = C.getSVal(Arg1);
-  if (SuffixWithN)
-    TotalSize = evalMulForBufferSize(C, Arg1, CE->getArg(2));
-  if (!TotalSize.getAs<DefinedOrUnknownSVal>())
-    return nullptr;
-
-  // Compare the size argument to 0.
-  DefinedOrUnknownSVal SizeZero =
-    svalBuilder.evalEQ(State, TotalSize.castAs<DefinedOrUnknownSVal>(),
-                       svalBuilder.makeIntValWithPtrWidth(0, false));
-
-  ProgramStateRef StatePtrIsNull, StatePtrNotNull;
-  std::tie(StatePtrIsNull, StatePtrNotNull) = State->assume(PtrEQ);
-  ProgramStateRef StateSizeIsZero, StateSizeNotZero;
-  std::tie(StateSizeIsZero, StateSizeNotZero) = State->assume(SizeZero);
-  // We only assume exceptional states if they are definitely true; if the
-  // state is under-constrained, assume regular realloc behavior.
-  bool PrtIsNull = StatePtrIsNull && !StatePtrNotNull;
-  bool SizeIsZero = StateSizeIsZero && !StateSizeNotZero;
-
-  // If the ptr is NULL and the size is not 0, the call is equivalent to
-  // malloc(size).
-  if (PrtIsNull && !SizeIsZero) {
-    ProgramStateRef stateMalloc = MallocMemAux(C, CE, TotalSize,
-                                               UndefinedVal(), StatePtrIsNull);
-    return stateMalloc;
-  }
-
-  if (PrtIsNull && SizeIsZero)
-    return State;
-
-  // Get the from and to pointer symbols as in toPtr = realloc(fromPtr, size).
-  assert(!PrtIsNull);
-  SymbolRef FromPtr = arg0Val.getAsSymbol();
-  SVal RetVal = C.getSVal(CE);
-  SymbolRef ToPtr = RetVal.getAsSymbol();
-  if (!FromPtr || !ToPtr)
-    return nullptr;
-
-  bool ReleasedAllocated = false;
-
-  // If the size is 0, free the memory.
-  if (SizeIsZero)
-    if (ProgramStateRef stateFree = FreeMemAux(C, CE, StateSizeIsZero, 0,
-                                               false, ReleasedAllocated)){
-      // The semantics of the return value are:
-      // If size was equal to 0, either NULL or a pointer suitable to be passed
-      // to free() is returned. We just free the input pointer and do not add
-      // any constrains on the output pointer.
-      return stateFree;
-    }
-
-  // Default behavior.
-  if (ProgramStateRef stateFree =
-        FreeMemAux(C, CE, State, 0, false, ReleasedAllocated)) {
-
-    ProgramStateRef stateRealloc = MallocMemAux(C, CE, TotalSize,
-                                                UnknownVal(), stateFree);
-    if (!stateRealloc)
-      return nullptr;
-
-    ReallocPairKind Kind = RPToBeFreedAfterFailure;
-    if (FreesOnFail)
-      Kind = RPIsFreeOnFailure;
-    else if (!ReleasedAllocated)
-      Kind = RPDoNotTrackAfterFailure;
-
-    // Record the info about the reallocated symbol so that we could properly
-    // process failed reallocation.
-    stateRealloc = stateRealloc->set<ReallocPairs>(ToPtr,
-                                                   ReallocPair(FromPtr, Kind));
-    // The reallocated symbol should stay alive for as long as the new symbol.
-    C.getSymbolManager().addSymbolDependency(ToPtr, FromPtr);
-    return stateRealloc;
-  }
-  return nullptr;
-}
-
-ProgramStateRef MallocChecker::CallocMem(CheckerContext &C, const CallExpr *CE,
-                                         ProgramStateRef State) {
-  if (!State)
-    return nullptr;
-
-  if (CE->getNumArgs() < 2)
-    return nullptr;
-
-  SValBuilder &svalBuilder = C.getSValBuilder();
-  SVal zeroVal = svalBuilder.makeZeroVal(svalBuilder.getContext().CharTy);
-  SVal TotalSize = evalMulForBufferSize(C, CE->getArg(0), CE->getArg(1));
-
-  return MallocMemAux(C, CE, TotalSize, zeroVal, State);
-}
-
-LeakInfo
-MallocChecker::getAllocationSite(const ExplodedNode *N, SymbolRef Sym,
-                                 CheckerContext &C) const {
-  const LocationContext *LeakContext = N->getLocationContext();
-  // Walk the ExplodedGraph backwards and find the first node that referred to
-  // the tracked symbol.
-  const ExplodedNode *AllocNode = N;
-  const MemRegion *ReferenceRegion = nullptr;
-
-  while (N) {
-    ProgramStateRef State = N->getState();
-    if (!State->get<RegionState>(Sym))
-      break;
-
-    // Find the most recent expression bound to the symbol in the current
-    // context.
-      if (!ReferenceRegion) {
-        if (const MemRegion *MR = C.getLocationRegionIfPostStore(N)) {
-          SVal Val = State->getSVal(MR);
-          if (Val.getAsLocSymbol() == Sym) {
-            const VarRegion* VR = MR->getBaseRegion()->getAs<VarRegion>();
-            // Do not show local variables belonging to a function other than
-            // where the error is reported.
-            if (!VR ||
-                (VR->getStackFrame() == LeakContext->getStackFrame()))
-              ReferenceRegion = MR;
-          }
-        }
-      }
-
-    // Allocation node, is the last node in the current or parent context in
-    // which the symbol was tracked.
-    const LocationContext *NContext = N->getLocationContext();
-    if (NContext == LeakContext ||
-        NContext->isParentOf(LeakContext))
-      AllocNode = N;
-    N = N->pred_empty() ? nullptr : *(N->pred_begin());
-  }
-
-  return LeakInfo(AllocNode, ReferenceRegion);
-}
-
-void MallocChecker::reportLeak(SymbolRef Sym, ExplodedNode *N,
-                               CheckerContext &C) const {
-
-  if (!ChecksEnabled[CK_MallocChecker] &&
-      !ChecksEnabled[CK_NewDeleteLeaksChecker])
-    return;
-
-  const RefState *RS = C.getState()->get<RegionState>(Sym);
-  assert(RS && "cannot leak an untracked symbol");
-  AllocationFamily Family = RS->getAllocationFamily();
-
-  if (Family == AF_Alloca)
-    return;
-
-  Optional<MallocChecker::CheckKind>
-      CheckKind = getCheckIfTracked(Family, true);
-
-  if (!CheckKind.hasValue())
-    return;
-
-  assert(N);
-  if (!BT_Leak[*CheckKind]) {
-    // Leaks should not be reported if they are post-dominated by a sink:
-    // (1) Sinks are higher importance bugs.
-    // (2) NoReturnFunctionChecker uses sink nodes to represent paths ending
-    //     with __noreturn functions such as assert() or exit(). We choose not
-    //     to report leaks on such paths.
-    BT_Leak[*CheckKind].reset(new BugType(CheckNames[*CheckKind], "Memory leak",
-                                          categories::MemoryError,
-                                          /*SuppressOnSink=*/true));
-  }
-
-  // Most bug reports are cached at the location where they occurred.
-  // With leaks, we want to unique them by the location where they were
-  // allocated, and only report a single path.
-  PathDiagnosticLocation LocUsedForUniqueing;
-  const ExplodedNode *AllocNode = nullptr;
-  const MemRegion *Region = nullptr;
-  std::tie(AllocNode, Region) = getAllocationSite(N, Sym, C);
-
-  const Stmt *AllocationStmt = PathDiagnosticLocation::getStmt(AllocNode);
-  if (AllocationStmt)
-    LocUsedForUniqueing = PathDiagnosticLocation::createBegin(AllocationStmt,
-                                              C.getSourceManager(),
-                                              AllocNode->getLocationContext());
-
-  SmallString<200> buf;
-  llvm::raw_svector_ostream os(buf);
-  if (Region && Region->canPrintPretty()) {
-    os << "Potential leak of memory pointed to by ";
-    Region->printPretty(os);
-  } else {
-    os << "Potential memory leak";
-  }
-
-  auto R = llvm::make_unique<BugReport>(
-      *BT_Leak[*CheckKind], os.str(), N, LocUsedForUniqueing,
-      AllocNode->getLocationContext()->getDecl());
-  R->markInteresting(Sym);
-  R->addVisitor(llvm::make_unique<MallocBugVisitor>(Sym, true));
-  C.emitReport(std::move(R));
-}
-
-void MallocChecker::checkDeadSymbols(SymbolReaper &SymReaper,
-                                     CheckerContext &C) const
-{
-  ProgramStateRef state = C.getState();
-  RegionStateTy OldRS = state->get<RegionState>();
-  RegionStateTy::Factory &F = state->get_context<RegionState>();
-
-  RegionStateTy RS = OldRS;
-  SmallVector<SymbolRef, 2> Errors;
-  for (RegionStateTy::iterator I = RS.begin(), E = RS.end(); I != E; ++I) {
-    if (SymReaper.isDead(I->first)) {
-      if (I->second.isAllocated() || I->second.isAllocatedOfSizeZero())
-        Errors.push_back(I->first);
-      // Remove the dead symbol from the map.
-      RS = F.remove(RS, I->first);
-    }
-  }
-
-  if (RS == OldRS) {
-    // We shouldn't have touched other maps yet.
-    assert(state->get<ReallocPairs>() ==
-           C.getState()->get<ReallocPairs>());
-    assert(state->get<FreeReturnValue>() ==
-           C.getState()->get<FreeReturnValue>());
-    return;
-  }
-
-  // Cleanup the Realloc Pairs Map.
-  ReallocPairsTy RP = state->get<ReallocPairs>();
-  for (ReallocPairsTy::iterator I = RP.begin(), E = RP.end(); I != E; ++I) {
-    if (SymReaper.isDead(I->first) ||
-        SymReaper.isDead(I->second.ReallocatedSym)) {
-      state = state->remove<ReallocPairs>(I->first);
-    }
-  }
-
-  // Cleanup the FreeReturnValue Map.
-  FreeReturnValueTy FR = state->get<FreeReturnValue>();
-  for (FreeReturnValueTy::iterator I = FR.begin(), E = FR.end(); I != E; ++I) {
-    if (SymReaper.isDead(I->first) ||
-        SymReaper.isDead(I->second)) {
-      state = state->remove<FreeReturnValue>(I->first);
-    }
-  }
-
-  // Generate leak node.
-  ExplodedNode *N = C.getPredecessor();
-  if (!Errors.empty()) {
-    static CheckerProgramPointTag Tag("MallocChecker", "DeadSymbolsLeak");
-    N = C.generateNonFatalErrorNode(C.getState(), &Tag);
-    if (N) {
-      for (SmallVectorImpl<SymbolRef>::iterator
-           I = Errors.begin(), E = Errors.end(); I != E; ++I) {
-        reportLeak(*I, N, C);
-      }
-    }
-  }
-
-  C.addTransition(state->set<RegionState>(RS), N);
-}
-
-void MallocChecker::checkPreCall(const CallEvent &Call,
-                                 CheckerContext &C) const {
-
-  if (const CXXDestructorCall *DC = dyn_cast<CXXDestructorCall>(&Call)) {
-    SymbolRef Sym = DC->getCXXThisVal().getAsSymbol();
-    if (!Sym || checkDoubleDelete(Sym, C))
-      return;
-  }
-
-  // We will check for double free in the post visit.
-  if (const AnyFunctionCall *FC = dyn_cast<AnyFunctionCall>(&Call)) {
-    const FunctionDecl *FD = FC->getDecl();
-    if (!FD)
-      return;
-
-    ASTContext &Ctx = C.getASTContext();
-    if (ChecksEnabled[CK_MallocChecker] &&
-        (isCMemFunction(FD, Ctx, AF_Malloc, MemoryOperationKind::MOK_Free) ||
-         isCMemFunction(FD, Ctx, AF_IfNameIndex,
-                        MemoryOperationKind::MOK_Free)))
-      return;
-  }
-
-  // Check if the callee of a method is deleted.
-  if (const CXXInstanceCall *CC = dyn_cast<CXXInstanceCall>(&Call)) {
-    SymbolRef Sym = CC->getCXXThisVal().getAsSymbol();
-    if (!Sym || checkUseAfterFree(Sym, C, CC->getCXXThisExpr()))
-      return;
-  }
-
-  // Check arguments for being used after free.
-  for (unsigned I = 0, E = Call.getNumArgs(); I != E; ++I) {
-    SVal ArgSVal = Call.getArgSVal(I);
-    if (ArgSVal.getAs<Loc>()) {
-      SymbolRef Sym = ArgSVal.getAsSymbol();
-      if (!Sym)
-        continue;
-      if (checkUseAfterFree(Sym, C, Call.getArgExpr(I)))
-        return;
-    }
-  }
-}
-
-void MallocChecker::checkPreStmt(const ReturnStmt *S,
-                                 CheckerContext &C) const {
-  checkEscapeOnReturn(S, C);
-}
-
-// In the CFG, automatic destructors come after the return statement.
-// This callback checks for returning memory that is freed by automatic
-// destructors, as those cannot be reached in checkPreStmt().
-void MallocChecker::checkEndFunction(const ReturnStmt *S,
-                                     CheckerContext &C) const {
-  checkEscapeOnReturn(S, C);
-}
-
-void MallocChecker::checkEscapeOnReturn(const ReturnStmt *S,
-                                        CheckerContext &C) const {
-  if (!S)
-    return;
-
-  const Expr *E = S->getRetValue();
-  if (!E)
-    return;
-
-  // Check if we are returning a symbol.
-  ProgramStateRef State = C.getState();
-  SVal RetVal = C.getSVal(E);
-  SymbolRef Sym = RetVal.getAsSymbol();
-  if (!Sym)
-    // If we are returning a field of the allocated struct or an array element,
-    // the callee could still free the memory.
-    // TODO: This logic should be a part of generic symbol escape callback.
-    if (const MemRegion *MR = RetVal.getAsRegion())
-      if (isa<FieldRegion>(MR) || isa<ElementRegion>(MR))
-        if (const SymbolicRegion *BMR =
-              dyn_cast<SymbolicRegion>(MR->getBaseRegion()))
-          Sym = BMR->getSymbol();
-
-  // Check if we are returning freed memory.
-  if (Sym)
-    checkUseAfterFree(Sym, C, E);
-}
-
-// TODO: Blocks should be either inlined or should call invalidate regions
-// upon invocation. After that's in place, special casing here will not be
-// needed.
-void MallocChecker::checkPostStmt(const BlockExpr *BE,
-                                  CheckerContext &C) const {
-
-  // Scan the BlockDecRefExprs for any object the retain count checker
-  // may be tracking.
-  if (!BE->getBlockDecl()->hasCaptures())
-    return;
-
-  ProgramStateRef state = C.getState();
-  const BlockDataRegion *R =
-    cast<BlockDataRegion>(C.getSVal(BE).getAsRegion());
-
-  BlockDataRegion::referenced_vars_iterator I = R->referenced_vars_begin(),
-                                            E = R->referenced_vars_end();
-
-  if (I == E)
-    return;
-
-  SmallVector<const MemRegion*, 10> Regions;
-  const LocationContext *LC = C.getLocationContext();
-  MemRegionManager &MemMgr = C.getSValBuilder().getRegionManager();
-
-  for ( ; I != E; ++I) {
-    const VarRegion *VR = I.getCapturedRegion();
-    if (VR->getSuperRegion() == R) {
-      VR = MemMgr.getVarRegion(VR->getDecl(), LC);
-    }
-    Regions.push_back(VR);
-  }
-
-  state =
-    state->scanReachableSymbols<StopTrackingCallback>(Regions).getState();
-  C.addTransition(state);
-}
-
-bool MallocChecker::isReleased(SymbolRef Sym, CheckerContext &C) const {
-  assert(Sym);
-  const RefState *RS = C.getState()->get<RegionState>(Sym);
-  return (RS && RS->isReleased());
-}
-
-bool MallocChecker::suppressDeallocationsInSuspiciousContexts(
-    const CallExpr *CE, CheckerContext &C) const {
-  if (CE->getNumArgs() == 0)
-    return false;
-
-  StringRef FunctionStr = "";
-  if (const auto *FD = dyn_cast<FunctionDecl>(C.getStackFrame()->getDecl()))
-    if (const Stmt *Body = FD->getBody())
-      if (Body->getBeginLoc().isValid())
-        FunctionStr =
-            Lexer::getSourceText(CharSourceRange::getTokenRange(
-                                     {FD->getBeginLoc(), Body->getBeginLoc()}),
-                                 C.getSourceManager(), C.getLangOpts());
-
-  // We do not model the Integer Set Library's retain-count based allocation.
-  if (!FunctionStr.contains("__isl_"))
-    return false;
-
-  ProgramStateRef State = C.getState();
-
-  for (const Expr *Arg : CE->arguments())
-    if (SymbolRef Sym = C.getSVal(Arg).getAsSymbol())
-      if (const RefState *RS = State->get<RegionState>(Sym))
-        State = State->set<RegionState>(Sym, RefState::getEscaped(RS));
-
-  C.addTransition(State);
-  return true;
-}
-
-bool MallocChecker::checkUseAfterFree(SymbolRef Sym, CheckerContext &C,
-                                      const Stmt *S) const {
-
-  if (isReleased(Sym, C)) {
-    ReportUseAfterFree(C, S->getSourceRange(), Sym);
-    return true;
-  }
-
-  return false;
-}
-
-void MallocChecker::checkUseZeroAllocated(SymbolRef Sym, CheckerContext &C,
-                                          const Stmt *S) const {
-  assert(Sym);
-
-  if (const RefState *RS = C.getState()->get<RegionState>(Sym)) {
-    if (RS->isAllocatedOfSizeZero())
-      ReportUseZeroAllocated(C, RS->getStmt()->getSourceRange(), Sym);
-  }
-  else if (C.getState()->contains<ReallocSizeZeroSymbols>(Sym)) {
-    ReportUseZeroAllocated(C, S->getSourceRange(), Sym);
-  }
-}
-
-bool MallocChecker::checkDoubleDelete(SymbolRef Sym, CheckerContext &C) const {
-
-  if (isReleased(Sym, C)) {
-    ReportDoubleDelete(C, Sym);
-    return true;
-  }
-  return false;
-}
-
-// Check if the location is a freed symbolic region.
-void MallocChecker::checkLocation(SVal l, bool isLoad, const Stmt *S,
-                                  CheckerContext &C) const {
-  SymbolRef Sym = l.getLocSymbolInBase();
-  if (Sym) {
-    checkUseAfterFree(Sym, C, S);
-    checkUseZeroAllocated(Sym, C, S);
-  }
-}
-
-// If a symbolic region is assumed to NULL (or another constant), stop tracking
-// it - assuming that allocation failed on this path.
-ProgramStateRef MallocChecker::evalAssume(ProgramStateRef state,
-                                              SVal Cond,
-                                              bool Assumption) const {
-  RegionStateTy RS = state->get<RegionState>();
-  for (RegionStateTy::iterator I = RS.begin(), E = RS.end(); I != E; ++I) {
-    // If the symbol is assumed to be NULL, remove it from consideration.
-    ConstraintManager &CMgr = state->getConstraintManager();
-    ConditionTruthVal AllocFailed = CMgr.isNull(state, I.getKey());
-    if (AllocFailed.isConstrainedTrue())
-      state = state->remove<RegionState>(I.getKey());
-  }
-
-  // Realloc returns 0 when reallocation fails, which means that we should
-  // restore the state of the pointer being reallocated.
-  ReallocPairsTy RP = state->get<ReallocPairs>();
-  for (ReallocPairsTy::iterator I = RP.begin(), E = RP.end(); I != E; ++I) {
-    // If the symbol is assumed to be NULL, remove it from consideration.
-    ConstraintManager &CMgr = state->getConstraintManager();
-    ConditionTruthVal AllocFailed = CMgr.isNull(state, I.getKey());
-    if (!AllocFailed.isConstrainedTrue())
-      continue;
-
-    SymbolRef ReallocSym = I.getData().ReallocatedSym;
-    if (const RefState *RS = state->get<RegionState>(ReallocSym)) {
-      if (RS->isReleased()) {
-        if (I.getData().Kind == RPToBeFreedAfterFailure)
-          state = state->set<RegionState>(ReallocSym,
-              RefState::getAllocated(RS->getAllocationFamily(), RS->getStmt()));
-        else if (I.getData().Kind == RPDoNotTrackAfterFailure)
-          state = state->remove<RegionState>(ReallocSym);
-        else
-          assert(I.getData().Kind == RPIsFreeOnFailure);
-      }
-    }
-    state = state->remove<ReallocPairs>(I.getKey());
-  }
-
-  return state;
-}
-
-bool MallocChecker::mayFreeAnyEscapedMemoryOrIsModeledExplicitly(
-                                              const CallEvent *Call,
-                                              ProgramStateRef State,
-                                              SymbolRef &EscapingSymbol) const {
-  assert(Call);
-  EscapingSymbol = nullptr;
-
-  // For now, assume that any C++ or block call can free memory.
-  // TODO: If we want to be more optimistic here, we'll need to make sure that
-  // regions escape to C++ containers. They seem to do that even now, but for
-  // mysterious reasons.
-  if (!(isa<SimpleFunctionCall>(Call) || isa<ObjCMethodCall>(Call)))
-    return true;
-
-  // Check Objective-C messages by selector name.
-  if (const ObjCMethodCall *Msg = dyn_cast<ObjCMethodCall>(Call)) {
-    // If it's not a framework call, or if it takes a callback, assume it
-    // can free memory.
-    if (!Call->isInSystemHeader() || Call->argumentsMayEscape())
-      return true;
-
-    // If it's a method we know about, handle it explicitly post-call.
-    // This should happen before the "freeWhenDone" check below.
-    if (isKnownDeallocObjCMethodName(*Msg))
-      return false;
-
-    // If there's a "freeWhenDone" parameter, but the method isn't one we know
-    // about, we can't be sure that the object will use free() to deallocate the
-    // memory, so we can't model it explicitly. The best we can do is use it to
-    // decide whether the pointer escapes.
-    if (Optional<bool> FreeWhenDone = getFreeWhenDoneArg(*Msg))
-      return *FreeWhenDone;
-
-    // If the first selector piece ends with "NoCopy", and there is no
-    // "freeWhenDone" parameter set to zero, we know ownership is being
-    // transferred. Again, though, we can't be sure that the object will use
-    // free() to deallocate the memory, so we can't model it explicitly.
-    StringRef FirstSlot = Msg->getSelector().getNameForSlot(0);
-    if (FirstSlot.endswith("NoCopy"))
-      return true;
-
-    // If the first selector starts with addPointer, insertPointer,
-    // or replacePointer, assume we are dealing with NSPointerArray or similar.
-    // This is similar to C++ containers (vector); we still might want to check
-    // that the pointers get freed by following the container itself.
-    if (FirstSlot.startswith("addPointer") ||
-        FirstSlot.startswith("insertPointer") ||
-        FirstSlot.startswith("replacePointer") ||
-        FirstSlot.equals("valueWithPointer")) {
-      return true;
-    }
-
-    // We should escape receiver on call to 'init'. This is especially relevant
-    // to the receiver, as the corresponding symbol is usually not referenced
-    // after the call.
-    if (Msg->getMethodFamily() == OMF_init) {
-      EscapingSymbol = Msg->getReceiverSVal().getAsSymbol();
-      return true;
-    }
-
-    // Otherwise, assume that the method does not free memory.
-    // Most framework methods do not free memory.
-    return false;
-  }
-
-  // At this point the only thing left to handle is straight function calls.
-  const FunctionDecl *FD = cast<SimpleFunctionCall>(Call)->getDecl();
-  if (!FD)
-    return true;
-
-  ASTContext &ASTC = State->getStateManager().getContext();
-
-  // If it's one of the allocation functions we can reason about, we model
-  // its behavior explicitly.
-  if (isMemFunction(FD, ASTC))
-    return false;
-
-  // If it's not a system call, assume it frees memory.
-  if (!Call->isInSystemHeader())
-    return true;
-
-  // White list the system functions whose arguments escape.
-  const IdentifierInfo *II = FD->getIdentifier();
-  if (!II)
-    return true;
-  StringRef FName = II->getName();
-
-  // White list the 'XXXNoCopy' CoreFoundation functions.
-  // We specifically check these before
-  if (FName.endswith("NoCopy")) {
-    // Look for the deallocator argument. We know that the memory ownership
-    // is not transferred only if the deallocator argument is
-    // 'kCFAllocatorNull'.
-    for (unsigned i = 1; i < Call->getNumArgs(); ++i) {
-      const Expr *ArgE = Call->getArgExpr(i)->IgnoreParenCasts();
-      if (const DeclRefExpr *DE = dyn_cast<DeclRefExpr>(ArgE)) {
-        StringRef DeallocatorName = DE->getFoundDecl()->getName();
-        if (DeallocatorName == "kCFAllocatorNull")
-          return false;
-      }
-    }
-    return true;
-  }
-
-  // Associating streams with malloced buffers. The pointer can escape if
-  // 'closefn' is specified (and if that function does free memory),
-  // but it will not if closefn is not specified.
-  // Currently, we do not inspect the 'closefn' function (PR12101).
-  if (FName == "funopen")
-    if (Call->getNumArgs() >= 4 && Call->getArgSVal(4).isConstant(0))
-      return false;
-
-  // Do not warn on pointers passed to 'setbuf' when used with std streams,
-  // these leaks might be intentional when setting the buffer for stdio.
-  // http://stackoverflow.com/questions/2671151/who-frees-setvbuf-buffer
-  if (FName == "setbuf" || FName =="setbuffer" ||
-      FName == "setlinebuf" || FName == "setvbuf") {
-    if (Call->getNumArgs() >= 1) {
-      const Expr *ArgE = Call->getArgExpr(0)->IgnoreParenCasts();
-      if (const DeclRefExpr *ArgDRE = dyn_cast<DeclRefExpr>(ArgE))
-        if (const VarDecl *D = dyn_cast<VarDecl>(ArgDRE->getDecl()))
-          if (D->getCanonicalDecl()->getName().find("std") != StringRef::npos)
-            return true;
-    }
-  }
-
-  // A bunch of other functions which either take ownership of a pointer or
-  // wrap the result up in a struct or object, meaning it can be freed later.
-  // (See RetainCountChecker.) Not all the parameters here are invalidated,
-  // but the Malloc checker cannot differentiate between them. The right way
-  // of doing this would be to implement a pointer escapes callback.
-  if (FName == "CGBitmapContextCreate" ||
-      FName == "CGBitmapContextCreateWithData" ||
-      FName == "CVPixelBufferCreateWithBytes" ||
-      FName == "CVPixelBufferCreateWithPlanarBytes" ||
-      FName == "OSAtomicEnqueue") {
-    return true;
-  }
-
-  if (FName == "postEvent" &&
-      FD->getQualifiedNameAsString() == "QCoreApplication::postEvent") {
-    return true;
-  }
-
-  if (FName == "postEvent" &&
-      FD->getQualifiedNameAsString() == "QCoreApplication::postEvent") {
-    return true;
-  }
-
-  if (FName == "connectImpl" &&
-      FD->getQualifiedNameAsString() == "QObject::connectImpl") {
-    return true;
-  }
-
-  // Handle cases where we know a buffer's /address/ can escape.
-  // Note that the above checks handle some special cases where we know that
-  // even though the address escapes, it's still our responsibility to free the
-  // buffer.
-  if (Call->argumentsMayEscape())
-    return true;
-
-  // Otherwise, assume that the function does not free memory.
-  // Most system calls do not free the memory.
-  return false;
-}
-
-static bool retTrue(const RefState *RS) {
-  return true;
-}
-
-static bool checkIfNewOrNewArrayFamily(const RefState *RS) {
-  return (RS->getAllocationFamily() == AF_CXXNewArray ||
-          RS->getAllocationFamily() == AF_CXXNew);
-}
-
-ProgramStateRef MallocChecker::checkPointerEscape(ProgramStateRef State,
-                                             const InvalidatedSymbols &Escaped,
-                                             const CallEvent *Call,
-                                             PointerEscapeKind Kind) const {
-  return checkPointerEscapeAux(State, Escaped, Call, Kind, &retTrue);
-}
-
-ProgramStateRef MallocChecker::checkConstPointerEscape(ProgramStateRef State,
-                                              const InvalidatedSymbols &Escaped,
-                                              const CallEvent *Call,
-                                              PointerEscapeKind Kind) const {
-  return checkPointerEscapeAux(State, Escaped, Call, Kind,
-                               &checkIfNewOrNewArrayFamily);
-}
-
-ProgramStateRef MallocChecker::checkPointerEscapeAux(ProgramStateRef State,
-                                              const InvalidatedSymbols &Escaped,
-                                              const CallEvent *Call,
-                                              PointerEscapeKind Kind,
-                                  bool(*CheckRefState)(const RefState*)) const {
-  // If we know that the call does not free memory, or we want to process the
-  // call later, keep tracking the top level arguments.
-  SymbolRef EscapingSymbol = nullptr;
-  if (Kind == PSK_DirectEscapeOnCall &&
-      !mayFreeAnyEscapedMemoryOrIsModeledExplicitly(Call, State,
-                                                    EscapingSymbol) &&
-      !EscapingSymbol) {
-    return State;
-  }
-
-  for (InvalidatedSymbols::const_iterator I = Escaped.begin(),
-       E = Escaped.end();
-       I != E; ++I) {
-    SymbolRef sym = *I;
-
-    if (EscapingSymbol && EscapingSymbol != sym)
-      continue;
-
-    if (const RefState *RS = State->get<RegionState>(sym)) {
-      if ((RS->isAllocated() || RS->isAllocatedOfSizeZero()) &&
-          CheckRefState(RS)) {
-        State = State->set<RegionState>(sym, RefState::getEscaped(RS));
-      }
-    }
-  }
-  return State;
-}
-
-static SymbolRef findFailedReallocSymbol(ProgramStateRef currState,
-                                         ProgramStateRef prevState) {
-  ReallocPairsTy currMap = currState->get<ReallocPairs>();
-  ReallocPairsTy prevMap = prevState->get<ReallocPairs>();
-
-  for (ReallocPairsTy::iterator I = prevMap.begin(), E = prevMap.end();
-       I != E; ++I) {
-    SymbolRef sym = I.getKey();
-    if (!currMap.lookup(sym))
-      return sym;
-  }
-
-  return nullptr;
-}
-
-static bool isReferenceCountingPointerDestructor(const CXXDestructorDecl *DD) {
-  if (const IdentifierInfo *II = DD->getParent()->getIdentifier()) {
-    StringRef N = II->getName();
-    if (N.contains_lower("ptr") || N.contains_lower("pointer")) {
-      if (N.contains_lower("ref") || N.contains_lower("cnt") ||
-          N.contains_lower("intrusive") || N.contains_lower("shared")) {
-        return true;
-      }
-    }
-  }
-  return false;
-}
-
-std::shared_ptr<PathDiagnosticPiece> MallocChecker::MallocBugVisitor::VisitNode(
-    const ExplodedNode *N, BugReporterContext &BRC, BugReport &BR) {
-
-  ProgramStateRef state = N->getState();
-  ProgramStateRef statePrev = N->getFirstPred()->getState();
-
-  const RefState *RS = state->get<RegionState>(Sym);
-  const RefState *RSPrev = statePrev->get<RegionState>(Sym);
-
-  const Stmt *S = PathDiagnosticLocation::getStmt(N);
-  // When dealing with containers, we sometimes want to give a note
-  // even if the statement is missing.
-  if (!S && (!RS || RS->getAllocationFamily() != AF_InnerBuffer))
-    return nullptr;
-
-  const LocationContext *CurrentLC = N->getLocationContext();
-
-  // If we find an atomic fetch_add or fetch_sub within the destructor in which
-  // the pointer was released (before the release), this is likely a destructor
-  // of a shared pointer.
-  // Because we don't model atomics, and also because we don't know that the
-  // original reference count is positive, we should not report use-after-frees
-  // on objects deleted in such destructors. This can probably be improved
-  // through better shared pointer modeling.
-  if (ReleaseDestructorLC) {
-    if (const auto *AE = dyn_cast<AtomicExpr>(S)) {
-      AtomicExpr::AtomicOp Op = AE->getOp();
-      if (Op == AtomicExpr::AO__c11_atomic_fetch_add ||
-          Op == AtomicExpr::AO__c11_atomic_fetch_sub) {
-        if (ReleaseDestructorLC == CurrentLC ||
-            ReleaseDestructorLC->isParentOf(CurrentLC)) {
-          BR.markInvalid(getTag(), S);
-        }
-      }
-    }
-  }
-
-  // FIXME: We will eventually need to handle non-statement-based events
-  // (__attribute__((cleanup))).
-
-  // Find out if this is an interesting point and what is the kind.
-  StringRef Msg;
-  StackHintGeneratorForSymbol *StackHint = nullptr;
-  SmallString<256> Buf;
-  llvm::raw_svector_ostream OS(Buf);
-
-  if (Mode == Normal) {
-    if (isAllocated(RS, RSPrev, S)) {
-      Msg = "Memory is allocated";
-      StackHint = new StackHintGeneratorForSymbol(Sym,
-                                                  "Returned allocated memory");
-    } else if (isReleased(RS, RSPrev, S)) {
-      const auto Family = RS->getAllocationFamily();
-      switch (Family) {
-        case AF_Alloca:
-        case AF_Malloc:
-        case AF_CXXNew:
-        case AF_CXXNewArray:
-        case AF_IfNameIndex:
-          Msg = "Memory is released";
-          StackHint = new StackHintGeneratorForSymbol(Sym,
-                                              "Returning; memory was released");
-          break;
-        case AF_InnerBuffer: {
-          const MemRegion *ObjRegion =
-              allocation_state::getContainerObjRegion(statePrev, Sym);
-          const auto *TypedRegion = cast<TypedValueRegion>(ObjRegion);
-          QualType ObjTy = TypedRegion->getValueType();
-          OS << "Inner buffer of '" << ObjTy.getAsString() << "' ";
-
-          if (N->getLocation().getKind() == ProgramPoint::PostImplicitCallKind) {
-            OS << "deallocated by call to destructor";
-            StackHint = new StackHintGeneratorForSymbol(Sym,
-                                      "Returning; inner buffer was deallocated");
-          } else {
-            OS << "reallocated by call to '";
-            const Stmt *S = RS->getStmt();
-            if (const auto *MemCallE = dyn_cast<CXXMemberCallExpr>(S)) {
-              OS << MemCallE->getMethodDecl()->getNameAsString();
-            } else if (const auto *OpCallE = dyn_cast<CXXOperatorCallExpr>(S)) {
-              OS << OpCallE->getDirectCallee()->getNameAsString();
-            } else if (const auto *CallE = dyn_cast<CallExpr>(S)) {
-              auto &CEMgr = BRC.getStateManager().getCallEventManager();
-              CallEventRef<> Call = CEMgr.getSimpleCall(CallE, state, CurrentLC);
-              const auto *D = dyn_cast_or_null<NamedDecl>(Call->getDecl());
-              OS << (D ? D->getNameAsString() : "unknown");
-            }
-            OS << "'";
-            StackHint = new StackHintGeneratorForSymbol(Sym,
-                                      "Returning; inner buffer was reallocated");
-          }
-          Msg = OS.str();
-          break;
-        }
-        case AF_None:
-          llvm_unreachable("Unhandled allocation family!");
-      }
-
-      // See if we're releasing memory while inlining a destructor
-      // (or one of its callees). This turns on various common
-      // false positive suppressions.
-      bool FoundAnyDestructor = false;
-      for (const LocationContext *LC = CurrentLC; LC; LC = LC->getParent()) {
-        if (const auto *DD = dyn_cast<CXXDestructorDecl>(LC->getDecl())) {
-          if (isReferenceCountingPointerDestructor(DD)) {
-            // This immediately looks like a reference-counting destructor.
-            // We're bad at guessing the original reference count of the object,
-            // so suppress the report for now.
-            BR.markInvalid(getTag(), DD);
-          } else if (!FoundAnyDestructor) {
-            assert(!ReleaseDestructorLC &&
-                   "There can be only one release point!");
-            // Suspect that it's a reference counting pointer destructor.
-            // On one of the next nodes might find out that it has atomic
-            // reference counting operations within it (see the code above),
-            // and if so, we'd conclude that it likely is a reference counting
-            // pointer destructor.
-            ReleaseDestructorLC = LC->getStackFrame();
-            // It is unlikely that releasing memory is delegated to a destructor
-            // inside a destructor of a shared pointer, because it's fairly hard
-            // to pass the information that the pointer indeed needs to be
-            // released into it. So we're only interested in the innermost
-            // destructor.
-            FoundAnyDestructor = true;
-          }
-        }
-      }
-    } else if (isRelinquished(RS, RSPrev, S)) {
-      Msg = "Memory ownership is transferred";
-      StackHint = new StackHintGeneratorForSymbol(Sym, "");
-    } else if (isReallocFailedCheck(RS, RSPrev, S)) {
-      Mode = ReallocationFailed;
-      Msg = "Reallocation failed";
-      StackHint = new StackHintGeneratorForReallocationFailed(Sym,
-                                                       "Reallocation failed");
-
-      if (SymbolRef sym = findFailedReallocSymbol(state, statePrev)) {
-        // Is it possible to fail two reallocs WITHOUT testing in between?
-        assert((!FailedReallocSymbol || FailedReallocSymbol == sym) &&
-          "We only support one failed realloc at a time.");
-        BR.markInteresting(sym);
-        FailedReallocSymbol = sym;
-      }
-    }
-
-  // We are in a special mode if a reallocation failed later in the path.
-  } else if (Mode == ReallocationFailed) {
-    assert(FailedReallocSymbol && "No symbol to look for.");
-
-    // Is this is the first appearance of the reallocated symbol?
-    if (!statePrev->get<RegionState>(FailedReallocSymbol)) {
-      // We're at the reallocation point.
-      Msg = "Attempt to reallocate memory";
-      StackHint = new StackHintGeneratorForSymbol(Sym,
-                                                 "Returned reallocated memory");
-      FailedReallocSymbol = nullptr;
-      Mode = Normal;
-    }
-  }
-
-  if (Msg.empty())
-    return nullptr;
-  assert(StackHint);
-
-  // Generate the extra diagnostic.
-  PathDiagnosticLocation Pos;
-  if (!S) {
-    assert(RS->getAllocationFamily() == AF_InnerBuffer);
-    auto PostImplCall = N->getLocation().getAs<PostImplicitCall>();
-    if (!PostImplCall)
-      return nullptr;
-    Pos = PathDiagnosticLocation(PostImplCall->getLocation(),
-                                 BRC.getSourceManager());
-  } else {
-    Pos = PathDiagnosticLocation(S, BRC.getSourceManager(),
-                                 N->getLocationContext());
-  }
-
-  return std::make_shared<PathDiagnosticEventPiece>(Pos, Msg, true, StackHint);
-}
-
-void MallocChecker::printState(raw_ostream &Out, ProgramStateRef State,
-                               const char *NL, const char *Sep) const {
-
-  RegionStateTy RS = State->get<RegionState>();
-
-  if (!RS.isEmpty()) {
-    Out << Sep << "MallocChecker :" << NL;
-    for (RegionStateTy::iterator I = RS.begin(), E = RS.end(); I != E; ++I) {
-      const RefState *RefS = State->get<RegionState>(I.getKey());
-      AllocationFamily Family = RefS->getAllocationFamily();
-      Optional<MallocChecker::CheckKind> CheckKind = getCheckIfTracked(Family);
-      if (!CheckKind.hasValue())
-         CheckKind = getCheckIfTracked(Family, true);
-
-      I.getKey()->dumpToStream(Out);
-      Out << " : ";
-      I.getData().dump(Out);
-      if (CheckKind.hasValue())
-        Out << " (" << CheckNames[*CheckKind].getName() << ")";
-      Out << NL;
-    }
-  }
-}
-
-namespace clang {
-namespace ento {
-namespace allocation_state {
-
-ProgramStateRef
-markReleased(ProgramStateRef State, SymbolRef Sym, const Expr *Origin) {
-  AllocationFamily Family = AF_InnerBuffer;
-  return State->set<RegionState>(Sym, RefState::getReleased(Family, Origin));
-}
-
-} // end namespace allocation_state
-} // end namespace ento
-} // end namespace clang
-
-// Intended to be used in InnerPointerChecker to register the part of
-// MallocChecker connected to it.
-void ento::registerInnerPointerCheckerAux(CheckerManager &mgr) {
-  MallocChecker *checker = mgr.getChecker<MallocChecker>();
-  checker->ChecksEnabled[MallocChecker::CK_InnerPointerChecker] = true;
-  checker->CheckNames[MallocChecker::CK_InnerPointerChecker] =
-      mgr.getCurrentCheckName();
-}
-
-void ento::registerDynamicMemoryModeling(CheckerManager &mgr) {
-  auto *checker = mgr.registerChecker<MallocChecker>();
-  checker->IsOptimistic = mgr.getAnalyzerOptions().getCheckerBooleanOption(
-                                                         checker, "Optimistic");
-}
-
-bool ento::shouldRegisterDynamicMemoryModeling(const LangOptions &LO) {
-  return true;
-}
-
-#define REGISTER_CHECKER(name)                                                 \
-  void ento::register##name(CheckerManager &mgr) {                             \
-    MallocChecker *checker = mgr.getChecker<MallocChecker>();                  \
-    checker->ChecksEnabled[MallocChecker::CK_##name] = true;                   \
-    checker->CheckNames[MallocChecker::CK_##name] = mgr.getCurrentCheckName(); \
-  }                                                                            \
-                                                                               \
-  bool ento::shouldRegister##name(const LangOptions &LO) {                     \
-    return true;                                                               \
-  }
-
-REGISTER_CHECKER(MallocChecker)
-REGISTER_CHECKER(NewDeleteChecker)
-REGISTER_CHECKER(NewDeleteLeaksChecker)
-REGISTER_CHECKER(MismatchedDeallocatorChecker)