clang 17.0.0git
Functions | Variables
BugReporterVisitors.cpp File Reference
#include "clang/StaticAnalyzer/Core/BugReporter/BugReporterVisitors.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/ExprObjC.h"
#include "clang/AST/Stmt.h"
#include "clang/AST/Type.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Analysis/Analyses/Dominators.h"
#include "clang/Analysis/AnalysisDeclContext.h"
#include "clang/Analysis/CFG.h"
#include "clang/Analysis/CFGStmtMap.h"
#include "clang/Analysis/PathDiagnostic.h"
#include "clang/Analysis/ProgramPoint.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Lex/Lexer.h"
#include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
#include "clang/StaticAnalyzer/Core/BugReporter/BugReporter.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/MemRegion.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState_Fwd.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/SMTConv.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/SValBuilder.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/SVals.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include <cassert>
#include <deque>
#include <memory>
#include <optional>
#include <string>
#include <utility>

Go to the source code of this file.

Functions

static const ExprpeelOffPointerArithmetic (const BinaryOperator *B)
 
static const ExprpeelOffOuterExpr (const Expr *Ex, const ExplodedNode *N)
 
static const MemRegiongetLocationRegionIfReference (const Expr *E, const ExplodedNode *N, bool LookingForReference=true)
 
static bool hasVisibleUpdate (const ExplodedNode *LeftNode, SVal LeftVal, const ExplodedNode *RightNode, SVal RightVal)
 Comparing internal representations of symbolic values (via SVal::operator==()) is a valid way to check if the value was updated, unless it's a LazyCompoundVal that may have a different internal representation every time it is loaded from the state.
 
static std::optional< SValgetSValForVar (const Expr *CondVarExpr, const ExplodedNode *N)
 
static std::optional< const llvm::APSInt * > getConcreteIntegerValue (const Expr *CondVarExpr, const ExplodedNode *N)
 
static bool isVarAnInterestingCondition (const Expr *CondVarExpr, const ExplodedNode *N, const PathSensitiveBugReport *B)
 
static bool isInterestingExpr (const Expr *E, const ExplodedNode *N, const PathSensitiveBugReport *B)
 
static StringRef getMacroName (SourceLocation Loc, BugReporterContext &BRC)
 
static bool isFunctionMacroExpansion (SourceLocation Loc, const SourceManager &SM)
 
static bool wasRegionOfInterestModifiedAt (const SubRegion *RegionOfInterest, const ExplodedNode *N, SVal ValueAfter)
 
static const ExplodedNodegetMatchingCallExitEnd (const ExplodedNode *N)
 
static bool potentiallyWritesIntoIvar (const Decl *Parent, const ObjCIvarDecl *Ivar)
 
static bool isPointerToConst (QualType Ty)
 
static bool isInitializationOfVar (const ExplodedNode *N, const VarRegion *VR)
 Returns true if N represents the DeclStmt declaring and initializing VR.
 
static bool isObjCPointer (const MemRegion *R)
 
static bool isObjCPointer (const ValueDecl *D)
 
static void showBRDiagnostics (llvm::raw_svector_ostream &OS, StoreInfo SI)
 Show diagnostics for initializing or declaring a region R with a bad value.
 
static void showBRParamDiagnostics (llvm::raw_svector_ostream &OS, StoreInfo SI)
 Display diagnostics for passing bad region as a parameter.
 
static void showBRDefaultDiagnostics (llvm::raw_svector_ostream &OS, StoreInfo SI)
 Show default diagnostics for storing bad region.
 
static bool isTrivialCopyOrMoveCtor (const CXXConstructExpr *CE)
 
static const ExprtryExtractInitializerFromList (const InitListExpr *ILE, const MemRegion *R)
 
static std::shared_ptr< PathDiagnosticEventPiececonstructDebugPieceForTrackedCondition (const Expr *Cond, const ExplodedNode *N, BugReporterContext &BRC)
 
static bool isAssertlikeBlock (const CFGBlock *B, ASTContext &Context)
 
static const ExplodedNodefindNodeForExpression (const ExplodedNode *N, const Expr *Inner)
 Find the ExplodedNode where the lvalue (the value of 'Ex') was computed.
 

Variables

static llvm::StringLiteral WillBeUsedForACondition
 

Function Documentation

◆ constructDebugPieceForTrackedCondition()

static std::shared_ptr< PathDiagnosticEventPiece > constructDebugPieceForTrackedCondition ( const Expr Cond,
const ExplodedNode N,
BugReporterContext BRC 
)
static

◆ findNodeForExpression()

static const ExplodedNode * findNodeForExpression ( const ExplodedNode N,
const Expr Inner 
)
static

Find the ExplodedNode where the lvalue (the value of 'Ex') was computed.

Definition at line 2187 of file BugReporterVisitors.cpp.

References clang::ento::ExplodedNode::getFirstPred(), and clang::ento::ExplodedNode::getStmtForDiagnostics().

Referenced by clang::ento::bugreporter::Tracker::track().

◆ getConcreteIntegerValue()

static std::optional< const llvm::APSInt * > getConcreteIntegerValue ( const Expr CondVarExpr,
const ExplodedNode N 
)
static

Definition at line 233 of file BugReporterVisitors.cpp.

References getSValForVar(), and V.

Referenced by clang::ento::ConditionBRVisitor::printValue().

◆ getLocationRegionIfReference()

static const MemRegion * getLocationRegionIfReference ( const Expr E,
const ExplodedNode N,
bool  LookingForReference = true 
)
static

◆ getMacroName()

static StringRef getMacroName ( SourceLocation  Loc,
BugReporterContext BRC 
)
static

◆ getMatchingCallExitEnd()

static const ExplodedNode * getMatchingCallExitEnd ( const ExplodedNode N)
static

◆ getSValForVar()

static std::optional< SVal > getSValForVar ( const Expr CondVarExpr,
const ExplodedNode N 
)
static

◆ hasVisibleUpdate()

static bool hasVisibleUpdate ( const ExplodedNode LeftNode,
SVal  LeftVal,
const ExplodedNode RightNode,
SVal  RightVal 
)
static

Comparing internal representations of symbolic values (via SVal::operator==()) is a valid way to check if the value was updated, unless it's a LazyCompoundVal that may have a different internal representation every time it is loaded from the state.

In this function we do an approximate comparison for lazy compound values, checking that they are the immediate snapshots of the tracked region's bindings within the node's respective states but not really checking that these snapshots actually contain the same set of bindings.

Definition at line 190 of file BugReporterVisitors.cpp.

References clang::ento::SVal::getAs(), clang::ento::nonloc::LazyCompoundVal::getRegion(), and clang::ento::ExplodedNode::getState().

◆ isAssertlikeBlock()

static bool isAssertlikeBlock ( const CFGBlock B,
ASTContext Context 
)
static

◆ isFunctionMacroExpansion()

static bool isFunctionMacroExpansion ( SourceLocation  Loc,
const SourceManager SM 
)
static
Returns
Whether given spelling location corresponds to an expansion of a function-like macro.

Definition at line 276 of file BugReporterVisitors.cpp.

References clang::SrcMgr::SLocEntry::getExpansion(), clang::SrcMgr::ExpansionInfo::isFunctionMacroExpansion(), and SM.

◆ isInitializationOfVar()

static bool isInitializationOfVar ( const ExplodedNode N,
const VarRegion VR 
)
static

◆ isInterestingExpr()

static bool isInterestingExpr ( const Expr E,
const ExplodedNode N,
const PathSensitiveBugReport B 
)
static

◆ isObjCPointer() [1/2]

static bool isObjCPointer ( const MemRegion R)
static

◆ isObjCPointer() [2/2]

static bool isObjCPointer ( const ValueDecl D)
static

◆ isPointerToConst()

static bool isPointerToConst ( QualType  Ty)
static
Returns
whether Ty points to a const type, or is a const reference.

Definition at line 705 of file BugReporterVisitors.cpp.

References clang::QualType::getCanonicalType(), clang::Type::getPointeeType(), clang::QualType::isConstQualified(), and clang::QualType::isNull().

◆ isTrivialCopyOrMoveCtor()

static bool isTrivialCopyOrMoveCtor ( const CXXConstructExpr CE)
static

◆ isVarAnInterestingCondition()

static bool isVarAnInterestingCondition ( const Expr CondVarExpr,
const ExplodedNode N,
const PathSensitiveBugReport B 
)
static

◆ peelOffOuterExpr()

static const Expr * peelOffOuterExpr ( const Expr Ex,
const ExplodedNode N 
)
static

◆ peelOffPointerArithmetic()

static const Expr * peelOffPointerArithmetic ( const BinaryOperator B)
static

◆ potentiallyWritesIntoIvar()

static bool potentiallyWritesIntoIvar ( const Decl Parent,
const ObjCIvarDecl Ivar 
)
static

◆ showBRDefaultDiagnostics()

static void showBRDefaultDiagnostics ( llvm::raw_svector_ostream &  OS,
StoreInfo  SI 
)
static

◆ showBRDiagnostics()

static void showBRDiagnostics ( llvm::raw_svector_ostream &  OS,
StoreInfo  SI 
)
static

◆ showBRParamDiagnostics()

static void showBRParamDiagnostics ( llvm::raw_svector_ostream &  OS,
StoreInfo  SI 
)
static

◆ tryExtractInitializerFromList()

static const Expr * tryExtractInitializerFromList ( const InitListExpr ILE,
const MemRegion R 
)
static

◆ wasRegionOfInterestModifiedAt()

static bool wasRegionOfInterestModifiedAt ( const SubRegion RegionOfInterest,
const ExplodedNode N,
SVal  ValueAfter 
)
static

Variable Documentation

◆ WillBeUsedForACondition

llvm::StringLiteral WillBeUsedForACondition
static
Initial value:
=
", which participates in a condition later"

Definition at line 754 of file BugReporterVisitors.cpp.

Referenced by clang::ento::ConditionBRVisitor::VisitConditionVariable(), and clang::ento::ConditionBRVisitor::VisitTrueTest().