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

📁 ..
📄 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: DebugContainerModeling.cpp

//==-- DebugContainerModeling.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 debugging iterator modeling.
//
//===----------------------------------------------------------------------===//

#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 DebugContainerModeling
  : public Checker<eval::Call> {

std::unique_ptr<BugType> DebugMsgBugType;

template <typename Getter>
  void analyzerContainerDataField(const CallExpr *CE, CheckerContext &C,
                                  Getter get) const;
  void analyzerContainerBegin(const CallExpr *CE, CheckerContext &C) const;
  void analyzerContainerEnd(const CallExpr *CE, CheckerContext &C) const;
  ExplodedNode *reportDebugMsg(llvm::StringRef Msg, CheckerContext &C) const;

typedef void (DebugContainerModeling::*FnCheck)(const CallExpr *,
                                                 CheckerContext &) const;

CallDescriptionMap<FnCheck> Callbacks = {
    {{0, "clang_analyzer_container_begin", 1},
     &DebugContainerModeling::analyzerContainerBegin},
    {{0, "clang_analyzer_container_end", 1},
     &DebugContainerModeling::analyzerContainerEnd},
  };

public:
  DebugContainerModeling();

bool evalCall(const CallEvent &Call, CheckerContext &C) const;
};

} //namespace

DebugContainerModeling::DebugContainerModeling() {
  DebugMsgBugType.reset(
      new BugType(this, "Checking analyzer assumptions", "debug",
                  /*SuppressOnSink=*/true));
}

bool DebugContainerModeling::evalCall(const CallEvent &Call,
                                      CheckerContext &C) const {
  const auto *CE = dyn_cast_or_null<CallExpr>(Call.getOriginExpr());
  if (!CE)
    return false;

const FnCheck *Handler = Callbacks.lookup(Call);
  if (!Handler)
    return false;

(this->**Handler)(CE, C);
  return true;
}

template <typename Getter>
void DebugContainerModeling::analyzerContainerDataField(const CallExpr *CE,
                                                        CheckerContext &C,
                                                        Getter get) const {
  if (CE->getNumArgs() == 0) {
    reportDebugMsg("Missing container argument", C);
    return;
  }

auto State = C.getState();
  const MemRegion *Cont = C.getSVal(CE->getArg(0)).getAsRegion();
  if (Cont) {
    const auto *Data = getContainerData(State, Cont);
    if (Data) {
      SymbolRef Field = get(Data);
      if (Field) {
        State = State->BindExpr(CE, C.getLocationContext(),
                                nonloc::SymbolVal(Field));

// Progpagate interestingness from the container's data (marked
        // interesting by an `ExprInspection` debug call to the container
        // itself.
        const NoteTag *InterestingTag =
          C.getNoteTag(
              [Cont, Field](PathSensitiveBugReport &BR) -> std::string {
                if (BR.isInteresting(Field)) {
                  BR.markInteresting(Cont);
                }
                return "";
              });
        C.addTransition(State, InterestingTag);
        return;
      }
    }
  }

auto &BVF = C.getSValBuilder().getBasicValueFactory();
  State = State->BindExpr(CE, C.getLocationContext(),
                   nonloc::ConcreteInt(BVF.getValue(llvm::APSInt::get(0))));
}

void DebugContainerModeling::analyzerContainerBegin(const CallExpr *CE,
                                                    CheckerContext &C) const {
  analyzerContainerDataField(CE, C, [](const ContainerData *D) {
      return D->getBegin();
    });
}

void DebugContainerModeling::analyzerContainerEnd(const CallExpr *CE,
                                                  CheckerContext &C) const {
  analyzerContainerDataField(CE, C, [](const ContainerData *D) {
      return D->getEnd();
    });
}

ExplodedNode *DebugContainerModeling::reportDebugMsg(llvm::StringRef Msg,
                                                     CheckerContext &C) const {
  ExplodedNode *N = C.generateNonFatalErrorNode();
  if (!N)
    return nullptr;

auto &BR = C.getBugReporter();
  BR.emitReport(std::make_unique<PathSensitiveBugReport>(*DebugMsgBugType,
                                                         Msg, N));
  return N;
}

void ento::registerDebugContainerModeling(CheckerManager &mgr) {
  mgr.registerChecker<DebugContainerModeling>();
}

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

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Editing: DebugContainerModeling.cpp

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