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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: ObjCContainersASTChecker.cpp

//== ObjCContainersASTChecker.cpp - CoreFoundation containers API *- 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
//
//===----------------------------------------------------------------------===//
//
// An AST checker that looks for common pitfalls when using 'CFArray',
// 'CFDictionary', 'CFSet' APIs.
//
//===----------------------------------------------------------------------===//
#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Analysis/AnalysisDeclContext.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/raw_ostream.h"

using namespace clang;
using namespace ento;

namespace {
class WalkAST : public StmtVisitor<WalkAST> {
  BugReporter &BR;
  const CheckerBase *Checker;
  AnalysisDeclContext* AC;
  ASTContext &ASTC;
  uint64_t PtrWidth;

/// Check if the type has pointer size (very conservative).
  inline bool isPointerSize(const Type *T) {
    if (!T)
      return true;
    if (T->isIncompleteType())
      return true;
    return (ASTC.getTypeSize(T) == PtrWidth);
  }

/// Check if the type is a pointer/array to pointer sized values.
  inline bool hasPointerToPointerSizedType(const Expr *E) {
    QualType T = E->getType();

// The type could be either a pointer or array.
    const Type *TP = T.getTypePtr();
    QualType PointeeT = TP->getPointeeType();
    if (!PointeeT.isNull()) {
      // If the type is a pointer to an array, check the size of the array
      // elements. To avoid false positives coming from assumption that the
      // values x and &x are equal when x is an array.
      if (const Type *TElem = PointeeT->getArrayElementTypeNoTypeQual())
        if (isPointerSize(TElem))
          return true;

// Else, check the pointee size.
      return isPointerSize(PointeeT.getTypePtr());
    }

if (const Type *TElem = TP->getArrayElementTypeNoTypeQual())
      return isPointerSize(TElem);

// The type must be an array/pointer type.

// This could be a null constant, which is allowed.
    return static_cast<bool>(
        E->isNullPointerConstant(ASTC, Expr::NPC_ValueDependentIsNull));
  }

public:
  WalkAST(BugReporter &br, const CheckerBase *checker, AnalysisDeclContext *ac)
      : BR(br), Checker(checker), AC(ac), ASTC(AC->getASTContext()),
        PtrWidth(ASTC.getTargetInfo().getPointerWidth(0)) {}

// Statement visitor methods.
  void VisitChildren(Stmt *S);
  void VisitStmt(Stmt *S) { VisitChildren(S); }
  void VisitCallExpr(CallExpr *CE);
};
} // end anonymous namespace

static StringRef getCalleeName(CallExpr *CE) {
  const FunctionDecl *FD = CE->getDirectCallee();
  if (!FD)
    return StringRef();

IdentifierInfo *II = FD->getIdentifier();
  if (!II)   // if no identifier, not a simple C function
    return StringRef();

return II->getName();
}

void WalkAST::VisitCallExpr(CallExpr *CE) {
  StringRef Name = getCalleeName(CE);
  if (Name.empty())
    return;

const Expr *Arg = nullptr;
  unsigned ArgNum;

if (Name.equals("CFArrayCreate") || Name.equals("CFSetCreate")) {
    if (CE->getNumArgs() != 4)
      return;
    ArgNum = 1;
    Arg = CE->getArg(ArgNum)->IgnoreParenCasts();
    if (hasPointerToPointerSizedType(Arg))
        return;
  } else if (Name.equals("CFDictionaryCreate")) {
    if (CE->getNumArgs() != 6)
      return;
    // Check first argument.
    ArgNum = 1;
    Arg = CE->getArg(ArgNum)->IgnoreParenCasts();
    if (hasPointerToPointerSizedType(Arg)) {
      // Check second argument.
      ArgNum = 2;
      Arg = CE->getArg(ArgNum)->IgnoreParenCasts();
      if (hasPointerToPointerSizedType(Arg))
        // Both are good, return.
        return;
    }
  }

if (Arg) {
    assert(ArgNum == 1 || ArgNum == 2);

SmallString<64> BufName;
    llvm::raw_svector_ostream OsName(BufName);
    OsName << " Invalid use of '" << Name << "'" ;

SmallString<256> Buf;
    llvm::raw_svector_ostream Os(Buf);
    // Use "second" and "third" since users will expect 1-based indexing
    // for parameter names when mentioned in prose.
    Os << " The "<< ((ArgNum == 1) ? "second" : "third") << " argument to '"
        << Name << "' must be a C array of pointer-sized values, not '"
        << Arg->getType().getAsString() << "'";

PathDiagnosticLocation CELoc =
        PathDiagnosticLocation::createBegin(CE, BR.getSourceManager(), AC);
    BR.EmitBasicReport(AC->getDecl(), Checker, OsName.str(),
                       categories::CoreFoundationObjectiveC, Os.str(), CELoc,
                       Arg->getSourceRange());
  }

// Recurse and check children.
  VisitChildren(CE);
}

void WalkAST::VisitChildren(Stmt *S) {
  for (Stmt *Child : S->children())
    if (Child)
      Visit(Child);
}

namespace {
class ObjCContainersASTChecker : public Checker<check::ASTCodeBody> {
public:

void checkASTCodeBody(const Decl *D, AnalysisManager& Mgr,
                        BugReporter &BR) const {
    WalkAST walker(BR, this, Mgr.getAnalysisDeclContext(D));
    walker.Visit(D->getBody());
  }
};
}

void ento::registerObjCContainersASTChecker(CheckerManager &mgr) {
  mgr.registerChecker<ObjCContainersASTChecker>();
}

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

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Editing: ObjCContainersASTChecker.cpp

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