Visitor that tries to report interesting diagnostics from conditions. More...

#include "clang/StaticAnalyzer/Core/BugReporter/BugReporterVisitors.h"

Inheritance diagram for clang::ento::ConditionBRVisitor:

Public Member Functions
void	Profile (llvm::FoldingSetNodeID &ID) const override

PathDiagnosticPieceRef	VisitNode (const ExplodedNode *N, BugReporterContext &BRC, PathSensitiveBugReport &BR) override
	Return a diagnostic piece which should be associated with the given node.

PathDiagnosticPieceRef	VisitNodeImpl (const ExplodedNode *N, BugReporterContext &BRC, PathSensitiveBugReport &BR)

PathDiagnosticPieceRef	VisitTerminator (const Stmt Term, const ExplodedNode N, const CFGBlock SrcBlk, const CFGBlock DstBlk, PathSensitiveBugReport &R, BugReporterContext &BRC)

PathDiagnosticPieceRef	VisitTrueTest (const Expr Cond, BugReporterContext &BRC, PathSensitiveBugReport &R, const ExplodedNode N, bool TookTrue)

PathDiagnosticPieceRef	VisitTrueTest (const Expr Cond, const DeclRefExpr DR, BugReporterContext &BRC, PathSensitiveBugReport &R, const ExplodedNode *N, bool TookTrue, bool IsAssuming)

PathDiagnosticPieceRef	VisitTrueTest (const Expr Cond, const BinaryOperator BExpr, BugReporterContext &BRC, PathSensitiveBugReport &R, const ExplodedNode *N, bool TookTrue, bool IsAssuming)

PathDiagnosticPieceRef	VisitTrueTest (const Expr Cond, const MemberExpr ME, BugReporterContext &BRC, PathSensitiveBugReport &R, const ExplodedNode *N, bool TookTrue, bool IsAssuming)

PathDiagnosticPieceRef	VisitConditionVariable (StringRef LhsString, const Expr CondVarExpr, BugReporterContext &BRC, PathSensitiveBugReport &R, const ExplodedNode N, bool TookTrue)

bool	printValue (const Expr CondVarExpr, raw_ostream &Out, const ExplodedNode N, bool TookTrue, bool IsAssuming)
	Tries to print the value of the given expression.

bool	patternMatch (const Expr Ex, const Expr ParentEx, raw_ostream &Out, BugReporterContext &BRC, PathSensitiveBugReport &R, const ExplodedNode *N, std::optional< bool > &prunable, bool IsSameFieldName)

Public Member Functions inherited from clang::ento::BugReporterVisitor
	BugReporterVisitor ()=default

	BugReporterVisitor (const BugReporterVisitor &)=default

	BugReporterVisitor (BugReporterVisitor &&)

BugReporterVisitor &	operator= (const BugReporterVisitor &)=delete

BugReporterVisitor &	operator= (BugReporterVisitor &&)=delete

virtual	~BugReporterVisitor ()

virtual PathDiagnosticPieceRef	VisitNode (const ExplodedNode *Succ, BugReporterContext &BRC, PathSensitiveBugReport &BR)=0
	Return a diagnostic piece which should be associated with the given node.

virtual void	finalizeVisitor (BugReporterContext &BRC, const ExplodedNode *EndPathNode, PathSensitiveBugReport &BR)
	Last function called on the visitor, no further calls to VisitNode would follow.

virtual PathDiagnosticPieceRef	getEndPath (BugReporterContext &BRC, const ExplodedNode *N, PathSensitiveBugReport &BR)
	Provide custom definition for the final diagnostic piece on the path - the piece, which is displayed before the path is expanded.

virtual void	Profile (llvm::FoldingSetNodeID &ID) const =0

Static Public Member Functions
static const char *	getTag ()
	Return the tag associated with this visitor.

static bool	isPieceMessageGeneric (const PathDiagnosticPiece *Piece)

Static Public Member Functions inherited from clang::ento::BugReporterVisitor
static PathDiagnosticPieceRef	getDefaultEndPath (const BugReporterContext &BRC, const ExplodedNode *N, const PathSensitiveBugReport &BR)
	Generates the default final diagnostic piece.

Detailed Description

Visitor that tries to report interesting diagnostics from conditions.

Definition at line 447 of file BugReporterVisitors.h.

Member Function Documentation

◆ getTag()

const char * ConditionBRVisitor::getTag ( )

static

Return the tag associated with this visitor.

This tag will be used to make all PathDiagnosticPieces created by this visitor.

Definition at line 2763 of file BugReporterVisitors.cpp.

Referenced by eventsDescribeSameCondition().

◆ isPieceMessageGeneric()

bool ConditionBRVisitor::isPieceMessageGeneric ( const PathDiagnosticPiece * Piece )

static

Definition at line 3299 of file BugReporterVisitors.cpp.

References clang::ento::PathDiagnosticPiece::getString().

Referenced by eventsDescribeSameCondition().

◆ patternMatch()

bool ConditionBRVisitor::patternMatch	(	const Expr *	Ex,
		const Expr *	ParentEx,
		raw_ostream &	Out,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	R,
		const ExplodedNode *	N,
		std::optional< bool > &	prunable,
		bool	IsSameFieldName
	)

Definition at line 2953 of file BugReporterVisitors.cpp.

References clang::Lexer::getAsCharRange(), clang::ento::SVal::getAsRegion(), clang::ento::BugReporterContext::getASTContext(), clang::Stmt::getBeginLoc(), clang::Stmt::getEndLoc(), clang::ASTContext::getLangOpts(), clang::ento::ExplodedNode::getLocationContext(), clang::ento::ProgramState::getLValue(), clang::ento::BugReporterContext::getSourceManager(), clang::Stmt::getSourceRange(), clang::Lexer::getSourceText(), clang::ento::ExplodedNode::getState(), clang::ento::ProgramState::getSVal(), clang::CharSourceRange::getTokenRange(), clang::Expr::getType(), clang::Expr::IgnoreParenCasts(), clang::isa(), clang::Lexer::isAtEndOfMacroExpansion(), clang::Lexer::isAtStartOfMacroExpansion(), clang::ento::PathSensitiveBugReport::isInteresting(), clang::SourceLocation::isMacroID(), clang::Type::isObjCObjectPointerType(), clang::Type::isPointerType(), SM, and V.

◆ printValue()

bool ConditionBRVisitor::printValue	(	const Expr *	CondVarExpr,
		raw_ostream &	Out,
		const ExplodedNode *	N,
		bool	TookTrue,
		bool	IsAssuming
	)

Tries to print the value of the given expression.

Parameters

CondVarExpr	The expression to print its value.
Out	The stream to print.
N	The node where we encountered the condition.
TookTrue	Whether we took the `true` branch of the condition.

Returns: Whether the print was successful. (The printing is successful if we model the value and we could obtain it.)

Definition at line 3259 of file BugReporterVisitors.cpp.

References getConcreteIntegerValue(), clang::Expr::getType(), clang::Type::isBooleanType(), clang::Type::isIntegralOrEnumerationType(), clang::Type::isObjCObjectPointerType(), and clang::Type::isPointerType().

◆ Profile()

void clang::ento::ConditionBRVisitor::Profile ( llvm::FoldingSetNodeID & ID ) const

inlineoverridevirtual

Implements clang::ento::BugReporterVisitor.

Definition at line 455 of file BugReporterVisitors.h.

References ID.

◆ VisitConditionVariable()

PathDiagnosticPieceRef ConditionBRVisitor::VisitConditionVariable	(	StringRef	LhsString,
		const Expr *	CondVarExpr,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	R,
		const ExplodedNode *	N,
		bool	TookTrue
	)

Definition at line 3158 of file BugReporterVisitors.cpp.

References clang::ento::ExplodedNode::getLocationContext(), clang::ento::BugReporterContext::getSourceManager(), isInterestingExpr(), isVarAnInterestingCondition(), and WillBeUsedForACondition.

◆ VisitNode()

PathDiagnosticPieceRef ConditionBRVisitor::VisitNode	(	const ExplodedNode *	Succ,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	BR
	)

overridevirtual

Return a diagnostic piece which should be associated with the given node.

Note that this function does not get run on the very last node of the report, as the PathDiagnosticPiece associated with the last node should be unique. Use getEndPath to customize the note associated with the report end instead.

The last parameter can be used to register a new visitor with the given BugReport while processing a node.

Implements clang::ento::BugReporterVisitor.

Definition at line 2766 of file BugReporterVisitors.cpp.

◆ VisitNodeImpl()

PathDiagnosticPieceRef ConditionBRVisitor::VisitNodeImpl	(	const ExplodedNode *	N,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	BR
	)

Definition at line 2778 of file BugReporterVisitors.cpp.

References clang::ProgramPoint::getAs(), clang::ento::ExprEngine::geteagerlyAssumeBinOpBifurcationTags(), clang::ento::ExplodedNode::getFirstPred(), clang::ento::ExplodedNode::getLocation(), clang::ProgramPoint::getTag(), and clang::CFGBlock::getTerminatorStmt().

◆ VisitTerminator()

PathDiagnosticPieceRef ConditionBRVisitor::VisitTerminator	(	const Stmt *	Term,
		const ExplodedNode *	N,
		const CFGBlock *	SrcBlk,
		const CFGBlock *	DstBlk,
		PathSensitiveBugReport &	R,
		BugReporterContext &	BRC
	)

Definition at line 2816 of file BugReporterVisitors.cpp.

References clang::Stmt::getStmtClass(), clang::Expr::IgnoreParens(), clang::CFGBlock::succ_begin(), and clang::CFGBlock::succ_size().

◆ VisitTrueTest() [1/4]

PathDiagnosticPieceRef ConditionBRVisitor::VisitTrueTest	(	const Expr *	Cond,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	R,
		const ExplodedNode *	N,
		bool	TookTrue
	)

Definition at line 2875 of file BugReporterVisitors.cpp.

References clang::ento::ExplodedNode::getFirstPred(), clang::ento::ExplodedNode::getLocationContext(), clang::ento::BugReporterContext::getSourceManager(), clang::ento::ExplodedNode::getState(), clang::ento::BugReporterContext::getStateManager(), clang::Stmt::getStmtClass(), clang::ento::ProgramStateManager::haveEqualConstraints(), clang::Expr::IgnoreParenCasts(), clang::ento::DefinedSVal::isValid(), and P.

◆ VisitTrueTest() [2/4]

PathDiagnosticPieceRef ConditionBRVisitor::VisitTrueTest	(	const Expr *	Cond,
		const BinaryOperator *	BExpr,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	R,
		const ExplodedNode *	N,
		bool	TookTrue,
		bool	IsAssuming
	)

Definition at line 3038 of file BugReporterVisitors.cpp.

References clang::BinaryOperator::getLHS(), clang::ento::ExplodedNode::getLocationContext(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getOpcodeStr(), clang::BinaryOperator::getRHS(), clang::ento::BugReporterContext::getSourceManager(), clang::Expr::IgnoreParenCasts(), clang::BinaryOperator::isAssignmentOp(), clang::BinaryOperator::isComparisonOp(), isVarAnInterestingCondition(), SM, and WillBeUsedForACondition.

◆ VisitTrueTest() [3/4]

PathDiagnosticPieceRef ConditionBRVisitor::VisitTrueTest	(	const Expr *	Cond,
		const DeclRefExpr *	DR,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	R,
		const ExplodedNode *	N,
		bool	TookTrue,
		bool	IsAssuming
	)

Definition at line 3185 of file BugReporterVisitors.cpp.

References clang::DeclRefExpr::getDecl(), clang::ento::ExplodedNode::getLocationContext(), clang::ento::BugReporterContext::getSourceManager(), isInterestingExpr(), isVarAnInterestingCondition(), and WillBeUsedForACondition.

◆ VisitTrueTest() [4/4]

PathDiagnosticPieceRef ConditionBRVisitor::VisitTrueTest	(	const Expr *	Cond,
		const MemberExpr *	ME,
		BugReporterContext &	BRC,
		PathSensitiveBugReport &	R,
		const ExplodedNode *	N,
		bool	TookTrue,
		bool	IsAssuming
	)

Definition at line 3221 of file BugReporterVisitors.cpp.

References clang::ento::ExplodedNode::getLocationContext(), clang::MemberExpr::getMemberDecl(), clang::MemberExpr::getMemberLoc(), clang::NamedDecl::getName(), clang::ento::BugReporterContext::getSourceManager(), isInterestingExpr(), clang::SourceLocation::isValid(), clang::ento::DefinedSVal::isValid(), isVarAnInterestingCondition(), and WillBeUsedForACondition.

The documentation for this class was generated from the following files:

include/clang/StaticAnalyzer/Core/BugReporter/BugReporterVisitors.h
lib/StaticAnalyzer/Core/BugReporterVisitors.cpp

Public Member Functions

Static Public Member Functions