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usr / src / contrib / llvm-project / clang / lib / StaticAnalyzer / Checkers /

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📄 AllocationState.h(1.41 KB)
📄 AnalysisOrderChecker.cpp(8.62 KB)
📄 AnalyzerStatsChecker.cpp(5.04 KB)
📄 ArrayBoundChecker.cpp(3.22 KB)
📄 ArrayBoundCheckerV2.cpp(13.07 KB)
📄 BasicObjCFoundationChecks.cpp(43.82 KB)
📄 BlockInCriticalSectionChecker.cpp(6.69 KB)
📄 BoolAssignmentChecker.cpp(3.45 KB)
📄 BuiltinFunctionChecker.cpp(5 KB)
📄 CStringChecker.cpp(93.24 KB)
📄 CStringSyntaxChecker.cpp(9.8 KB)
📄 CXXSelfAssignmentChecker.cpp(3.08 KB)
📄 CallAndMessageChecker.cpp(26.57 KB)
📄 CastSizeChecker.cpp(4.96 KB)
📄 CastToStructChecker.cpp(4.43 KB)
📄 CastValueChecker.cpp(19.65 KB)
📄 CheckObjCDealloc.cpp(37.83 KB)
📄 CheckObjCInstMethSignature.cpp(4.8 KB)
📄 CheckPlacementNew.cpp(11.91 KB)
📄 CheckSecuritySyntaxOnly.cpp(38.79 KB)
📄 CheckSizeofPointer.cpp(3.16 KB)
📄 CheckerDocumentation.cpp(14.64 KB)
📄 ChrootChecker.cpp(4.88 KB)
📄 CloneChecker.cpp(8.28 KB)
📄 ContainerModeling.cpp(39.85 KB)
📄 ConversionChecker.cpp(7.11 KB)
📄 DeadStoresChecker.cpp(17.82 KB)
📄 DebugCheckers.cpp(10.41 KB)
📄 DebugContainerModeling.cpp(4.94 KB)
📄 DebugIteratorModeling.cpp(5.15 KB)
📄 DeleteWithNonVirtualDtorChecker.cpp(5.35 KB)
📄 DereferenceChecker.cpp(10.54 KB)
📄 DirectIvarAssignment.cpp(8.02 KB)
📄 DivZeroChecker.cpp(3.42 KB)
📄 DynamicTypeChecker.cpp(7.31 KB)
📄 DynamicTypePropagation.cpp(42.11 KB)
📄 EnumCastOutOfRangeChecker.cpp(5.75 KB)
📄 ExprInspectionChecker.cpp(15.6 KB)
📄 FixedAddressChecker.cpp(2.33 KB)
📄 FuchsiaHandleChecker.cpp(23.1 KB)
📄 GCDAntipatternChecker.cpp(7.85 KB)
📄 GTestChecker.cpp(10.52 KB)
📄 GenericTaintChecker.cpp(34.31 KB)
📄 IdenticalExprChecker.cpp(18.88 KB)
📄 InnerPointerChecker.cpp(11.54 KB)
📄 InterCheckerAPI.h(1.09 KB)
📄 InvalidatedIteratorChecker.cpp(4.93 KB)
📄 Iterator.cpp(10.62 KB)
📄 Iterator.h(6.32 KB)
📄 IteratorModeling.cpp(31.33 KB)
📄 IteratorRangeChecker.cpp(12.64 KB)
📄 IvarInvalidationChecker.cpp(27.63 KB)
📄 LLVMConventionsChecker.cpp(9.9 KB)
📄 LocalizationChecker.cpp(52.38 KB)
📄 MIGChecker.cpp(11.3 KB)
📁 MPI-Checker
📄 MacOSKeychainAPIChecker.cpp(25.21 KB)
📄 MacOSXAPIChecker.cpp(6.61 KB)
📄 MallocChecker.cpp(127.38 KB)
📄 MallocOverflowSecurityChecker.cpp(11.91 KB)
📄 MallocSizeofChecker.cpp(8.03 KB)
📄 MismatchedIteratorChecker.cpp(11.01 KB)
📄 MmapWriteExecChecker.cpp(3.22 KB)
📄 Move.h(1.07 KB)
📄 MoveChecker.cpp(27 KB)
📄 NSAutoreleasePoolChecker.cpp(2.93 KB)
📄 NSErrorChecker.cpp(10.6 KB)
📄 NoReturnFunctionChecker.cpp(5.48 KB)
📄 NonNullParamChecker.cpp(11.22 KB)
📄 NonnullGlobalConstantsChecker.cpp(5.09 KB)
📄 NullabilityChecker.cpp(46.95 KB)
📄 NumberObjectConversionChecker.cpp(13.69 KB)
📄 OSObjectCStyleCast.cpp(3.14 KB)
📄 ObjCAtSyncChecker.cpp(3.34 KB)
📄 ObjCAutoreleaseWriteChecker.cpp(8.62 KB)
📄 ObjCContainersASTChecker.cpp(5.5 KB)
📄 ObjCContainersChecker.cpp(6.71 KB)
📄 ObjCMissingSuperCallChecker.cpp(9.23 KB)
📄 ObjCPropertyChecker.cpp(3.03 KB)
📄 ObjCSelfInitChecker.cpp(16.21 KB)
📄 ObjCSuperDeallocChecker.cpp(9.33 KB)
📄 ObjCUnusedIVarsChecker.cpp(6.01 KB)
📄 PaddingChecker.cpp(14.26 KB)
📄 PointerArithChecker.cpp(12.18 KB)
📄 PointerIterationChecker.cpp(3.79 KB)
📄 PointerSortingChecker.cpp(4.5 KB)
📄 PointerSubChecker.cpp(2.56 KB)
📄 PthreadLockChecker.cpp(28.42 KB)
📁 RetainCountChecker
📄 ReturnPointerRangeChecker.cpp(3.39 KB)
📄 ReturnUndefChecker.cpp(4.1 KB)
📄 ReturnValueChecker.cpp(5.79 KB)
📄 RunLoopAutoreleaseLeakChecker.cpp(7.2 KB)
📄 STLAlgorithmModeling.cpp(7 KB)
📄 SimpleStreamChecker.cpp(9.43 KB)
📄 SmartPtr.h(1.17 KB)
📄 SmartPtrChecker.cpp(2.68 KB)
📄 SmartPtrModeling.cpp(8.05 KB)
📄 StackAddrEscapeChecker.cpp(15 KB)
📄 StdLibraryFunctionsChecker.cpp(74.86 KB)
📄 StreamChecker.cpp(37.36 KB)
📄 Taint.cpp(9.04 KB)
📄 Taint.h(4.19 KB)
📄 TaintTesterChecker.cpp(2.17 KB)
📄 TestAfterDivZeroChecker.cpp(8.19 KB)
📄 TraversalChecker.cpp(4.38 KB)
📄 TrustNonnullChecker.cpp(9.12 KB)
📄 UndefBranchChecker.cpp(3.82 KB)
📄 UndefCapturedBlockVarChecker.cpp(3.64 KB)
📄 UndefResultChecker.cpp(7.19 KB)
📄 UndefinedArraySubscriptChecker.cpp(2.36 KB)
📄 UndefinedAssignmentChecker.cpp(3.74 KB)
📁 UninitializedObject
📄 UnixAPIChecker.cpp(18.05 KB)
📄 UnreachableCodeChecker.cpp(9.59 KB)
📄 VLASizeChecker.cpp(10.95 KB)
📄 ValistChecker.cpp(15.65 KB)
📄 VforkChecker.cpp(7.67 KB)
📄 VirtualCallChecker.cpp(8.11 KB)
📁 WebKit
📄 Yaml.h(2.06 KB)
📁 cert

Editing: InvalidatedIteratorChecker.cpp

//===-- InvalidatedIteratorChecker.cpp ----------------------------*- 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
//
//===----------------------------------------------------------------------===//
//
// Defines a checker for access of invalidated iterators.
//
//===----------------------------------------------------------------------===//

#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"

#include "Iterator.h"

using namespace clang;
using namespace ento;
using namespace iterator;

namespace {

class InvalidatedIteratorChecker
  : public Checker<check::PreCall, check::PreStmt<UnaryOperator>,
                   check::PreStmt<BinaryOperator>,
                   check::PreStmt<ArraySubscriptExpr>,
                   check::PreStmt<MemberExpr>> {

std::unique_ptr<BugType> InvalidatedBugType;

void verifyAccess(CheckerContext &C, const SVal &Val) const;
  void reportBug(const StringRef &Message, const SVal &Val,
                 CheckerContext &C, ExplodedNode *ErrNode) const;
public:
  InvalidatedIteratorChecker();

void checkPreCall(const CallEvent &Call, CheckerContext &C) const;
  void checkPreStmt(const UnaryOperator *UO, CheckerContext &C) const;
  void checkPreStmt(const BinaryOperator *BO, CheckerContext &C) const;
  void checkPreStmt(const ArraySubscriptExpr *ASE, CheckerContext &C) const;
  void checkPreStmt(const MemberExpr *ME, CheckerContext &C) const;

};

} //namespace

InvalidatedIteratorChecker::InvalidatedIteratorChecker() {
  InvalidatedBugType.reset(
      new BugType(this, "Iterator invalidated", "Misuse of STL APIs"));
}

void InvalidatedIteratorChecker::checkPreCall(const CallEvent &Call,
                                              CheckerContext &C) const {
  // Check for access of invalidated position
  const auto *Func = dyn_cast_or_null<FunctionDecl>(Call.getDecl());
  if (!Func)
    return;

if (Func->isOverloadedOperator() &&
      isAccessOperator(Func->getOverloadedOperator())) {
    // Check for any kind of access of invalidated iterator positions
    if (const auto *InstCall = dyn_cast<CXXInstanceCall>(&Call)) {
      verifyAccess(C, InstCall->getCXXThisVal());
    } else {
      verifyAccess(C, Call.getArgSVal(0));
    }
  }
}

void InvalidatedIteratorChecker::checkPreStmt(const UnaryOperator *UO,
                                              CheckerContext &C) const {
  if (isa<CXXThisExpr>(UO->getSubExpr()))
    return;

ProgramStateRef State = C.getState();
  UnaryOperatorKind OK = UO->getOpcode();
  SVal SubVal = State->getSVal(UO->getSubExpr(), C.getLocationContext());

if (isAccessOperator(OK)) {
    verifyAccess(C, SubVal);
  }
}

void InvalidatedIteratorChecker::checkPreStmt(const BinaryOperator *BO,
                                              CheckerContext &C) const {
  ProgramStateRef State = C.getState();
  BinaryOperatorKind OK = BO->getOpcode();
  SVal LVal = State->getSVal(BO->getLHS(), C.getLocationContext());

if (isAccessOperator(OK)) {
    verifyAccess(C, LVal);
  }
}

void InvalidatedIteratorChecker::checkPreStmt(const ArraySubscriptExpr *ASE,
                                              CheckerContext &C) const {
  ProgramStateRef State = C.getState();
  SVal LVal = State->getSVal(ASE->getLHS(), C.getLocationContext());
  verifyAccess(C, LVal);
}

void InvalidatedIteratorChecker::checkPreStmt(const MemberExpr *ME,
                                              CheckerContext &C) const {
  if (!ME->isArrow() || ME->isImplicitAccess())
    return;

ProgramStateRef State = C.getState();
  SVal BaseVal = State->getSVal(ME->getBase(), C.getLocationContext());
  verifyAccess(C, BaseVal);
}

void InvalidatedIteratorChecker::verifyAccess(CheckerContext &C, const SVal &Val) const {
  auto State = C.getState();
  const auto *Pos = getIteratorPosition(State, Val);
  if (Pos && !Pos->isValid()) {
    auto *N = C.generateErrorNode(State);
    if (!N) {
      return;
    }
    reportBug("Invalidated iterator accessed.", Val, C, N);
  }
}

void InvalidatedIteratorChecker::reportBug(const StringRef &Message,
                                           const SVal &Val, CheckerContext &C,
                                           ExplodedNode *ErrNode) const {
  auto R = std::make_unique<PathSensitiveBugReport>(*InvalidatedBugType,
                                                    Message, ErrNode);
  R->markInteresting(Val);
  C.emitReport(std::move(R));
}

void ento::registerInvalidatedIteratorChecker(CheckerManager &mgr) {
  mgr.registerChecker<InvalidatedIteratorChecker>();
}

bool ento::shouldRegisterInvalidatedIteratorChecker(const CheckerManager &mgr) {
  return true;
}

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Editing: InvalidatedIteratorChecker.cpp

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