Represents an abstract call to a function or method along a particular path. More...

#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"

Inheritance diagram for clang::ento::CallEvent:

Collaboration diagram for clang::ento::CallEvent:

Public Types
using	Kind = CallEventKind

using	FrameBindingTy = std::pair< SVal, SVal >

using	BindingsTy = SmallVectorImpl< FrameBindingTy >

using	param_type_iterator = llvm::mapped_iterator< ArrayRef< ParmVarDecl * >::iterator, GetTypeFn >

Public Member Functions
CallEvent &	operator= (const CallEvent &)=delete

virtual	~CallEvent ()=default

virtual Kind	getKind () const =0
	Returns the kind of call this is. More...

virtual const Decl *	getDecl () const
	Returns the declaration of the function or method that will be called. More...

const ProgramStateRef &	getState () const
	The state in which the call is being evaluated. More...

const LocationContext *	getLocationContext () const
	The context in which the call is being evaluated. More...

virtual RuntimeDefinition	getRuntimeDefinition () const =0
	Returns the definition of the function or method that will be called. More...

const Expr *	getOriginExpr () const
	Returns the expression whose value will be the result of this call. More...

virtual unsigned	getNumArgs () const =0
	Returns the number of arguments (explicit and implicit). More...

bool	isInSystemHeader () const
	Returns true if the callee is known to be from a system header. More...

bool	isCalled (const CallDescription &CD) const
	Returns true if the CallEvent is a call to a function that matches the CallDescription. More...

virtual SourceRange	getSourceRange () const
	Returns a source range for the entire call, suitable for outputting in diagnostics. More...

virtual SVal	getArgSVal (unsigned Index) const
	Returns the value of a given argument at the time of the call. More...

virtual const Expr *	getArgExpr (unsigned Index) const
	Returns the expression associated with a given argument. More...

virtual SourceRange	getArgSourceRange (unsigned Index) const
	Returns the source range for errors associated with this argument. More...

QualType	getResultType () const
	Returns the result type, adjusted for references. More...

SVal	getReturnValue () const
	Returns the return value of the call. More...

bool	hasNonNullArgumentsWithType (bool(*Condition)(QualType)) const
	Returns true if the type of any of the non-null arguments satisfies the condition. More...

bool	hasNonZeroCallbackArg () const
	Returns true if any of the arguments appear to represent callbacks. More...

bool	hasVoidPointerToNonConstArg () const
	Returns true if any of the arguments is void*. More...

virtual bool	argumentsMayEscape () const
	Returns true if any of the arguments are known to escape to long- term storage, even if this method will not modify them. More...

bool	isGlobalCFunction (StringRef SpecificName=StringRef()) const
	Returns true if the callee is an externally-visible function in the top-level namespace, such as `malloc`. More...

const IdentifierInfo *	getCalleeIdentifier () const
	Returns the name of the callee, if its name is a simple identifier. More...

ProgramPoint	getProgramPoint (bool IsPreVisit=false, const ProgramPointTag *Tag=nullptr) const
	Returns an appropriate ProgramPoint for this call. More...

ProgramStateRef	invalidateRegions (unsigned BlockCount, ProgramStateRef Orig=nullptr) const
	Returns a new state with all argument regions invalidated. More...

virtual void	getInitialStackFrameContents (const StackFrameContext *CalleeCtx, BindingsTy &Bindings) const =0
	Populates the given SmallVector with the bindings in the callee's stack frame at the start of this call. More...

template<typename T >
CallEventRef< T >	cloneWithState (ProgramStateRef NewState) const
	Returns a copy of this CallEvent, but using the given state. More...

CallEventRef	cloneWithState (ProgramStateRef NewState) const
	Returns a copy of this CallEvent, but using the given state. More...

AnalysisDeclContext *	getCalleeAnalysisDeclContext () const
	Returns AnalysisDeclContext for the callee stack frame. More...

const StackFrameContext *	getCalleeStackFrame (unsigned BlockCount) const
	Returns the callee stack frame. More...

const VarRegion *	getParameterLocation (unsigned Index, unsigned BlockCount) const
	Returns memory location for a parameter variable within the callee stack frame. More...

bool	isArgumentConstructedDirectly (unsigned Index) const
	Returns true if on the current path, the argument was constructed by calling a C++ constructor over it. More...

virtual Optional< unsigned >	getAdjustedParameterIndex (unsigned ASTArgumentIndex) const
	Some calls have parameter numbering mismatched from argument numbering. More...

virtual unsigned	getASTArgumentIndex (unsigned CallArgumentIndex) const
	Some call event sub-classes conveniently adjust mismatching AST indices to match parameter indices. More...

virtual ArrayRef< ParmVarDecl * >	parameters () const =0
	Return call's formal parameters. More...

param_type_iterator	param_type_begin () const
	Returns an iterator over the types of the call's formal parameters. More...

param_type_iterator	param_type_end () const

void	dump (raw_ostream &Out) const

void	dump () const

template<typename T >
CallEventRef< T >	cloneWithState (ProgramStateRef NewState) const

Static Public Member Functions
static bool	isCallStmt (const Stmt *S)
	Returns true if this is a statement is a function or method call of some kind. More...

static QualType	getDeclaredResultType (const Decl *D)
	Returns the result type of a function or method declaration. More...

static bool	isVariadic (const Decl *D)
	Returns true if the given decl is known to be variadic. More...

Protected Types
using	ValueList = SmallVectorImpl< SVal >

Protected Member Functions
	CallEvent (const Expr E, ProgramStateRef state, const LocationContext lctx)

	CallEvent (const Decl D, ProgramStateRef state, const LocationContext lctx)

	CallEvent (const CallEvent &Original)

virtual void	cloneTo (void *Dest) const =0
	Copies this CallEvent, with vtable intact, into a new block of memory. More...

SVal	getSVal (const Stmt *S) const
	Get the value of arbitrary expressions at this point in the path. More...

virtual void	getExtraInvalidatedValues (ValueList &Values, RegionAndSymbolInvalidationTraits *ETraits) const
	Used to specify non-argument regions that will be invalidated as a result of this call. More...

Protected Attributes
const void *	Data

SourceLocation	Location

Friends
template<typename T >
struct	llvm::IntrusiveRefCntPtrInfo

class	CallEventManager

Detailed Description

Represents an abstract call to a function or method along a particular path.

CallEvents are created through the factory methods of CallEventManager.

CallEvents should always be cheap to create and destroy. In order for CallEventManager to be able to re-use CallEvent-sized memory blocks, subclasses of CallEvent may not add any data members to the base class. Use the "Data" and "Location" fields instead.

Definition at line 138 of file CallEvent.h.

Member Typedef Documentation

◆ BindingsTy

using clang::ento::CallEvent::BindingsTy = SmallVectorImpl<FrameBindingTy>

Definition at line 351 of file CallEvent.h.

◆ FrameBindingTy

using clang::ento::CallEvent::FrameBindingTy = std::pair<SVal, SVal>

Definition at line 350 of file CallEvent.h.

◆ Kind

using clang::ento::CallEvent::Kind = CallEventKind

Definition at line 140 of file CallEvent.h.

◆ param_type_iterator

using clang::ento::CallEvent::param_type_iterator = llvm::mapped_iterator<ArrayRef<ParmVarDecl *>::iterator, GetTypeFn>

Definition at line 439 of file CallEvent.h.

◆ ValueList

using clang::ento::CallEvent::ValueList = SmallVectorImpl<SVal>

protected

Definition at line 186 of file CallEvent.h.

Constructor & Destructor Documentation

◆ CallEvent() [1/3]

clang::ento::CallEvent::CallEvent	(	const Expr *	E,
		ProgramStateRef	state,
		const LocationContext *	lctx
	)

inlineprotected

Definition at line 167 of file CallEvent.h.

◆ CallEvent() [2/3]

clang::ento::CallEvent::CallEvent	(	const Decl *	D,
		ProgramStateRef	state,
		const LocationContext *	lctx
	)

inlineprotected

Definition at line 170 of file CallEvent.h.

◆ CallEvent() [3/3]

clang::ento::CallEvent::CallEvent ( const CallEvent & Original )

inlineprotected

Definition at line 174 of file CallEvent.h.

◆ ~CallEvent()

virtual clang::ento::CallEvent::~CallEvent ( )

virtualdefault

Member Function Documentation

◆ argumentsMayEscape()

virtual bool clang::ento::CallEvent::argumentsMayEscape ( ) const

inlinevirtual

Returns true if any of the arguments are known to escape to long- term storage, even if this method will not modify them.

Reimplemented in clang::ento::AnyFunctionCall.

Definition at line 303 of file CallEvent.h.

Referenced by clang::ento::AnyFunctionCall::argumentsMayEscape(), clang::ObjCMethodCall::argumentsMayEscape(), and invalidateRegions().

◆ cloneTo()

virtual void clang::ento::CallEvent::cloneTo ( void * Dest ) const

protectedpure virtual

Copies this CallEvent, with vtable intact, into a new block of memory.

Implemented in clang::ento::SimpleFunctionCall.

◆ cloneWithState() [1/3]

template<typename T >

CallEventRef<T> clang::ento::CallEvent::cloneWithState ( ProgramStateRef NewState ) const

Returns a copy of this CallEvent, but using the given state.

Referenced by clang::ento::ExprEngine::defaultEvalCall(), and clang::ento::CheckerManager::runCheckersForObjCMessage().

◆ cloneWithState() [2/3]

CallEventRef clang::ento::CallEvent::cloneWithState ( ProgramStateRef NewState ) const

inline

Returns a copy of this CallEvent, but using the given state.

Definition at line 363 of file CallEvent.h.

◆ cloneWithState() [3/3]

template<typename T >

CallEventRef<T> clang::ento::CallEvent::cloneWithState ( ProgramStateRef NewState ) const

Definition at line 1243 of file CallEvent.h.

References getKind(), and State.

◆ dump() [1/2]

void CallEvent::dump ( raw_ostream & Out ) const

Definition at line 438 of file CallEvent.cpp.

References getDecl(), getKind(), getOriginExpr(), clang::ASTContext::getPrintingPolicy(), and getState().

◆ dump() [2/2]

LLVM_DUMP_METHOD void CallEvent::dump ( ) const

Definition at line 436 of file CallEvent.cpp.

◆ getAdjustedParameterIndex()

virtual Optional<unsigned> clang::ento::CallEvent::getAdjustedParameterIndex ( unsigned ASTArgumentIndex ) const

inlinevirtual

Some calls have parameter numbering mismatched from argument numbering.

This function converts an argument index to the corresponding parameter index. Returns None is the argument doesn't correspond to any parameter variable.

Definition at line 413 of file CallEvent.h.

Referenced by invalidateRegions().

◆ getArgExpr()

virtual const Expr* clang::ento::CallEvent::getArgExpr ( unsigned Index ) const

inlinevirtual

Returns the expression associated with a given argument.

May be null if this expression does not appear in the source.

Reimplemented in clang::ento::SimpleFunctionCall.

Definition at line 272 of file CallEvent.h.

Referenced by clang::ento::mpi::MPIChecker::checkMissingWaits().

◆ getArgSourceRange()

SourceRange CallEvent::getArgSourceRange ( unsigned Index ) const

virtual

Returns the source range for errors associated with this argument.

May be invalid if the argument is not written in the source.

Definition at line 422 of file CallEvent.cpp.

Referenced by clang::ento::retaincountchecker::RetainCountChecker::checkSummary().

◆ getArgSVal()

SVal CallEvent::getArgSVal ( unsigned Index ) const

virtual

Returns the value of a given argument at the time of the call.

Definition at line 415 of file CallEvent.cpp.

Referenced by clang::ento::mpi::MPIChecker::checkDoubleNonblocking(), clang::ento::mpi::MPIChecker::checkMissingWaits(), clang::ento::retaincountchecker::RetainCountChecker::checkSummary(), clang::ento::ExprEngine::CreateCXXTemporaryObject(), hasNonNullArgumentsWithType(), invalidateRegions(), clang::ento::retaincountchecker::RetainCountChecker::processSummaryOfInlined(), and updateOutParameters().

◆ getASTArgumentIndex()

virtual unsigned clang::ento::CallEvent::getASTArgumentIndex ( unsigned CallArgumentIndex ) const

inlinevirtual

Some call event sub-classes conveniently adjust mismatching AST indices to match parameter indices.

This function converts an argument index as understood by CallEvent to the argument index as understood by the AST.

Definition at line 420 of file CallEvent.h.

References clang::ValueDecl::getType().

Referenced by clang::ento::ExprEngine::VisitCallExpr().

◆ getCalleeAnalysisDeclContext()

AnalysisDeclContext * CallEvent::getCalleeAnalysisDeclContext ( ) const

Returns AnalysisDeclContext for the callee stack frame.

Currently may fail; returns null on failure.

Definition at line 169 of file CallEvent.cpp.

References clang::LocationContext::getAnalysisDeclContext(), clang::AnalysisDeclContextManager::getContext(), clang::AnalysisDeclContext::getDecl(), clang::ento::RuntimeDefinition::getDecl(), getDecl(), clang::AnalysisDeclContext::getManager(), getRuntimeDefinition(), and clang::ento::RuntimeDefinition::mayHaveOtherDefinitions().

Referenced by getCalleeStackFrame().

◆ getCalleeIdentifier()

const IdentifierInfo* clang::ento::CallEvent::getCalleeIdentifier ( ) const

inline

Returns the name of the callee, if its name is a simple identifier.

Note that this will fail for Objective-C methods, blocks, and C++ overloaded operators. The former is named by a Selector rather than a simple identifier, and the latter two do not have names.

Definition at line 332 of file CallEvent.h.

Referenced by clang::ento::mpi::MPIChecker::checkDoubleNonblocking(), clang::ento::mpi::MPIChecker::checkMissingWaits(), clang::ento::mpi::MPIChecker::checkUnmatchedWaits(), and isCalled().

◆ getCalleeStackFrame()

const StackFrameContext * CallEvent::getCalleeStackFrame ( unsigned BlockCount ) const

Returns the callee stack frame.

That stack frame will only be entered during analysis if the call is inlined, but it may still be useful in intermediate calculations even if the call isn't inlined. May fail; returns null on failure.

Definition at line 195 of file CallEvent.cpp.

References clang::LocationContext::getAnalysisDeclContext(), clang::CFGStmtMap::getBlock(), getCalleeAnalysisDeclContext(), clang::AnalysisDeclContext::getCFGStmtMap(), clang::AnalysisDeclContext::getManager(), getOriginExpr(), clang::AnalysisDeclContextManager::getStackFrame(), and clang::CFGBlock::size().

◆ getDecl()

virtual const Decl* clang::ento::CallEvent::getDecl ( ) const

inlinevirtual

Returns the declaration of the function or method that will be called.

May be null.

Reimplemented in clang::ento::SimpleFunctionCall, and clang::ento::AnyFunctionCall.

Definition at line 202 of file CallEvent.h.

Referenced by clang::ento::AnyFunctionCall::argumentsMayEscape(), clang::ento::ExprEngine::CreateCXXTemporaryObject(), dump(), clang::ento::retaincountchecker::RetainCountChecker::evalCall(), clang::ObjCMethodCall::getAccessedProperty(), getCalleeAnalysisDeclContext(), clang::ento::AnyFunctionCall::getDecl(), clang::CXXInstanceCall::getExtraInvalidatedValues(), clang::CXXInstanceCall::getInitialStackFrameContents(), getProgramPoint(), clang::ento::AnyFunctionCall::getRuntimeDefinition(), clang::CXXInstanceCall::getRuntimeDefinition(), getSummary(), hasNonNullArgumentsWithType(), invalidateRegions(), isCalled(), isGlobalCFunction(), clang::ento::AnyFunctionCall::parameters(), clang::BlockCall::parameters(), and clang::ObjCMethodCall::parameters().

◆ getDeclaredResultType()

QualType CallEvent::getDeclaredResultType ( const Decl * D )

static

Returns the result type of a function or method declaration.

This will return a null QualType if the result type cannot be determined.

Definition at line 462 of file CallEvent.cpp.

References clang::Type::getAs(), and clang::Type::isDependentType().

Referenced by clang::ento::ExprEngine::processCallExit().

◆ getExtraInvalidatedValues()

virtual void clang::ento::CallEvent::getExtraInvalidatedValues	(	ValueList &	Values,
		RegionAndSymbolInvalidationTraits *	ETraits
	)		const

inlineprotectedvirtual

Used to specify non-argument regions that will be invalidated as a result of this call.

Definition at line 190 of file CallEvent.h.

References getKind().

Referenced by invalidateRegions().

◆ getInitialStackFrameContents()

virtual void clang::ento::CallEvent::getInitialStackFrameContents	(	const StackFrameContext *	CalleeCtx,
		BindingsTy &	Bindings
	)		const

pure virtual

Populates the given SmallVector with the bindings in the callee's stack frame at the start of this call.

Implemented in clang::ento::AnyFunctionCall.

Referenced by clang::ento::StoreManager::enterStackFrame().

◆ getKind()

virtual Kind clang::ento::CallEvent::getKind ( ) const

pure virtual

Returns the kind of call this is.

Implemented in clang::ento::SimpleFunctionCall.

Referenced by clang::ento::ExprEngine::bindReturnValue(), clang::ento::AnyFunctionCall::classof(), clang::ento::SimpleFunctionCall::classof(), dump(), invalidateRegions(), and isCalled().

◆ getLocationContext()

const LocationContext* clang::ento::CallEvent::getLocationContext ( ) const

inline

The context in which the call is being evaluated.

Definition at line 212 of file CallEvent.h.

Referenced by clang::ObjCMethodCall::getMessageKind(), getProgramPoint(), clang::ento::AnyFunctionCall::getRuntimeDefinition(), clang::ObjCMethodCall::getSelfSVal(), invalidateRegions(), isReceiverUnconsumedSelf(), and clang::ento::ExprEngine::VisitCallExpr().

◆ getNumArgs()

virtual unsigned clang::ento::CallEvent::getNumArgs ( ) const

pure virtual

Returns the number of arguments (explicit and implicit).

Note that this may be greater than the number of parameters in the callee's declaration, and that it may include arguments not written in the source.

Implemented in clang::ento::SimpleFunctionCall.

Referenced by clang::ento::mpi::MPIChecker::checkDoubleNonblocking(), clang::ento::retaincountchecker::RetainCountChecker::checkSummary(), hasNonNullArgumentsWithType(), invalidateRegions(), isCalled(), clang::ento::retaincountchecker::RetainCountChecker::processSummaryOfInlined(), updateOutParameters(), and clang::ento::ExprEngine::VisitCallExpr().

◆ getOriginExpr()

const Expr* clang::ento::CallEvent::getOriginExpr ( ) const

inline

Returns the expression whose value will be the result of this call.

May be null.

Definition at line 222 of file CallEvent.h.

Referenced by clang::ento::ExprEngine::bindReturnValue(), clang::ento::retaincountchecker::RetainCountChecker::checkSummary(), clang::ento::ExprEngine::CreateCXXTemporaryObject(), dump(), clang::ento::retaincountchecker::RetainCountChecker::evalCall(), clang::BlockCall::getBlockRegion(), getCalleeStackFrame(), clang::CXXMemberCall::getCXXThisExpr(), clang::CXXMemberOperatorCall::getCXXThisExpr(), clang::ento::SimpleFunctionCall::getDecl(), clang::CXXInstanceCall::getDecl(), clang::ento::SimpleFunctionCall::getOriginExpr(), clang::BlockCall::getOriginExpr(), clang::CXXConstructorCall::getOriginExpr(), clang::CXXAllocatorCall::getOriginExpr(), clang::ObjCMethodCall::getOriginExpr(), getProgramPoint(), clang::ObjCMethodCall::getReceiverSVal(), getResultType(), getReturnValue(), clang::CXXMemberCall::getRuntimeDefinition(), clang::ObjCMethodCall::getRuntimeDefinition(), clang::ObjCMethodCall::getSourceRange(), getSummary(), invalidateRegions(), clang::ObjCMethodCall::isReceiverSelfOrSuper(), isReceiverUnconsumedSelf(), clang::ento::CheckerManager::runCheckersForEvalCall(), and clang::ento::ExprEngine::VisitCallExpr().

◆ getParameterLocation()

const VarRegion * CallEvent::getParameterLocation	(	unsigned	Index,
		unsigned	BlockCount
	)		const

Returns memory location for a parameter variable within the callee stack frame.

May fail; returns null on failure.

Definition at line 224 of file CallEvent.cpp.

Referenced by invalidateRegions().

◆ getProgramPoint()

ProgramPoint CallEvent::getProgramPoint	(	bool	IsPreVisit = `false`,
		const ProgramPointTag *	Tag = `nullptr`
	)		const

Returns an appropriate ProgramPoint for this call.

Definition at line 340 of file CallEvent.cpp.

References clang::SourceRange::getBegin(), getDecl(), getLocationContext(), getOriginExpr(), and getSourceRange().

Referenced by clang::ento::ExprEngine::bindReturnValue(), and clang::ento::CheckerManager::runCheckersForObjCMessage().

◆ getResultType()

QualType CallEvent::getResultType ( ) const

Returns the result type, adjusted for references.

Definition at line 69 of file CallEvent.cpp.

References clang::ASTContext::getLValueReferenceType(), getOriginExpr(), clang::ASTContext::getRValueReferenceType(), getState(), clang::Expr::getType(), clang::Expr::getValueKind(), clang::VK_LValue, clang::VK_RValue, clang::VK_XValue, and clang::ASTContext::VoidTy.

Referenced by clang::ento::ExprEngine::bindReturnValue(), clang::ento::retaincountchecker::RetainCountChecker::checkSummary(), clang::ento::retaincountchecker::RetainCountChecker::evalCall(), and updateOutParameters().

◆ getReturnValue()

SVal CallEvent::getReturnValue ( ) const

Returns the return value of the call.

This should only be called if the CallEvent was created using a state in which the return value has already been bound to the origin expression.

Definition at line 429 of file CallEvent.cpp.

References getOriginExpr(), and getSVal().

Referenced by clang::ento::retaincountchecker::RetainCountChecker::checkSummary(), clang::ento::retaincountchecker::RetainCountChecker::processSummaryOfInlined(), and updateOutParameters().

◆ getRuntimeDefinition()

virtual RuntimeDefinition clang::ento::CallEvent::getRuntimeDefinition ( ) const

pure virtual

Returns the definition of the function or method that will be called.

Implemented in clang::ento::AnyFunctionCall.

Referenced by getCalleeAnalysisDeclContext().

◆ getSourceRange()

virtual SourceRange clang::ento::CallEvent::getSourceRange ( ) const

inlinevirtual

Returns a source range for the entire call, suitable for outputting in diagnostics.

Definition at line 263 of file CallEvent.h.

Referenced by getProgramPoint(), clang::ento::mpi::MPIBugReporter::reportDoubleNonblocking(), and clang::ento::mpi::MPIBugReporter::reportUnmatchedWait().

◆ getState()

const ProgramStateRef& clang::ento::CallEvent::getState ( ) const

inline

The state in which the call is being evaluated.

Definition at line 207 of file CallEvent.h.

References State.

Referenced by clang::ObjCMethodCall::canBeOverridenInSubclass(), dump(), clang::ObjCMethodCall::getExtraInvalidatedValues(), clang::ento::AnyFunctionCall::getInitialStackFrameContents(), clang::BlockCall::getInitialStackFrameContents(), clang::CXXInstanceCall::getInitialStackFrameContents(), clang::CXXConstructorCall::getInitialStackFrameContents(), clang::ObjCMethodCall::getInitialStackFrameContents(), getResultType(), clang::ento::AnyFunctionCall::getRuntimeDefinition(), clang::CXXInstanceCall::getRuntimeDefinition(), clang::ObjCMethodCall::getRuntimeDefinition(), clang::ObjCMethodCall::getSelfSVal(), invalidateRegions(), and isCalled().

◆ getSVal()

SVal clang::ento::CallEvent::getSVal ( const Stmt * S ) const

inlineprotected

Get the value of arbitrary expressions at this point in the path.

Definition at line 182 of file CallEvent.h.

Referenced by clang::BlockCall::getBlockRegion(), clang::CXXInstanceCall::getCXXThisVal(), clang::ento::SimpleFunctionCall::getDecl(), clang::CXXInstanceCall::getDecl(), clang::ObjCMethodCall::getReceiverSVal(), getReturnValue(), and clang::ObjCMethodCall::isReceiverSelfOrSuper().

◆ hasNonNullArgumentsWithType()

bool CallEvent::hasNonNullArgumentsWithType ( bool(*)(QualType) Condition ) const

Returns true if the type of any of the non-null arguments satisfies the condition.

Definition at line 130 of file CallEvent.cpp.

References getArgSVal(), getDecl(), getNumArgs(), param_type_begin(), and param_type_end().

Referenced by hasNonZeroCallbackArg(), and hasVoidPointerToNonConstArg().

◆ hasNonZeroCallbackArg()

bool CallEvent::hasNonZeroCallbackArg ( ) const

Returns true if any of the arguments appear to represent callbacks.

Definition at line 153 of file CallEvent.cpp.

References hasNonNullArgumentsWithType(), and isCallback().

Referenced by getSummary().

◆ hasVoidPointerToNonConstArg()

bool CallEvent::hasVoidPointerToNonConstArg ( ) const

Returns true if any of the arguments is void*.

Definition at line 157 of file CallEvent.cpp.

References hasNonNullArgumentsWithType(), and isVoidPointerToNonConst().

Referenced by clang::ento::AnyFunctionCall::argumentsMayEscape().

◆ invalidateRegions()

ProgramStateRef CallEvent::invalidateRegions	(	unsigned	BlockCount,
		ProgramStateRef	Orig = `nullptr`
	)		const

Returns a new state with all argument regions invalidated.

This accepts an alternate state in case some processing has already occurred.

Definition at line 286 of file CallEvent.cpp.

References argumentsMayEscape(), clang::ento::CE_CXXAllocator, findPtrToConstParams(), getAdjustedParameterIndex(), getArgSVal(), clang::ento::SVal::getAsRegion(), getDecl(), getExtraInvalidatedValues(), getKind(), getLocationContext(), getNumArgs(), getOriginExpr(), getParameterLocation(), getState(), isArgumentConstructedDirectly(), clang::ento::RegionAndSymbolInvalidationTraits::setTrait(), and clang::ento::RegionAndSymbolInvalidationTraits::TK_PreserveContents.

Referenced by clang::ento::ExprEngine::bindReturnValue().

◆ isArgumentConstructedDirectly()

bool clang::ento::CallEvent::isArgumentConstructedDirectly ( unsigned Index ) const

inline

Returns true if on the current path, the argument was constructed by calling a C++ constructor over it.

This is an internal detail of the analysis which doesn't necessarily represent the program semantics: if we are supposed to construct an argument directly, we may still not do that because we don't know how (i.e., construction context is unavailable in the CFG or not supported by the analyzer).

Definition at line 402 of file CallEvent.h.

References clang::ento::ExprEngine::getObjectUnderConstruction().

Referenced by invalidateRegions().

◆ isCalled()

bool CallEvent::isCalled ( const CallDescription & CD ) const

Returns true if the CallEvent is a call to a function that matches the CallDescription.

Note that this function is not intended to be used to match Obj-C method calls.

Definition at line 357 of file CallEvent.cpp.

References clang::CDF_MaybeBuiltin, clang::ento::CE_ObjCMessage, getCalleeIdentifier(), getDecl(), clang::Decl::getDeclContext(), clang::CallDescription::getFunctionName(), getKind(), getNumArgs(), clang::DeclContext::getParent(), getState(), clang::ento::CheckerContext::isCLibraryFunction(), and parameters().

◆ isCallStmt()

bool CallEvent::isCallStmt ( const Stmt * S )

static

Returns true if this is a statement is a function or method call of some kind.

Definition at line 456 of file CallEvent.cpp.

Referenced by clang::ento::ExplodedGraph::isInterestingLValueExpr(), and shouldRemoveDeadBindings().

◆ isGlobalCFunction()

bool CallEvent::isGlobalCFunction ( StringRef SpecificName = StringRef() ) const

Returns true if the callee is an externally-visible function in the top-level namespace, such as malloc.

You can use this call to determine that a particular function really is a library function and not, say, a C++ member function with the same name.

If a name is provided, the function must additionally match the given name.

Note that this deliberately excludes C++ library functions in the std namespace, but will include C library functions accessed through the std namespace. This also does not check if the function is declared as 'extern "C"', or if it uses C++ name mangling.

Definition at line 161 of file CallEvent.cpp.

References getDecl(), and clang::ento::CheckerContext::isCLibraryFunction().

◆ isInSystemHeader()

bool clang::ento::CallEvent::isInSystemHeader ( ) const

inline

Returns true if the callee is known to be from a system header.

Definition at line 234 of file CallEvent.h.

References clang::Decl::getLocation(), clang::SourceManager::isInSystemHeader(), clang::SourceLocation::isValid(), and SM.

Referenced by clang::ObjCMethodCall::argumentsMayEscape().

◆ isVariadic()

bool CallEvent::isVariadic ( const Decl * D )

static

Returns true if the given decl is known to be variadic.

D must not be null.

Definition at line 491 of file CallEvent.cpp.

Referenced by clang::ento::ExprEngine::CreateCXXTemporaryObject(), and isCXXSharedPtrDtor().

◆ operator=()

CallEvent& clang::ento::CallEvent::operator= ( const CallEvent & )

delete

◆ param_type_begin()

param_type_iterator clang::ento::CallEvent::param_type_begin ( ) const

inline

Returns an iterator over the types of the call's formal parameters.

This uses the callee decl found by default name lookup rather than the definition because it represents a public interface, and probably has more annotations.

Definition at line 446 of file CallEvent.h.

Referenced by hasNonNullArgumentsWithType().

◆ param_type_end()

param_type_iterator clang::ento::CallEvent::param_type_end ( ) const

inline

See also: param_type_begin()

Definition at line 450 of file CallEvent.h.

References dump().

Referenced by hasNonNullArgumentsWithType().

◆ parameters()

virtual ArrayRef<ParmVarDecl *> clang::ento::CallEvent::parameters ( ) const

pure virtual

Return call's formal parameters.

Remember that the number of formal parameters may not match the number of arguments for all calls. However, the first parameter will always correspond with the argument value returned by getArgSVal(0).

Implemented in clang::ento::AnyFunctionCall.

Referenced by clang::BlockCall::getInitialStackFrameContents(), isCalled(), and shouldEscapeOSArgumentOnCall().

Friends And Related Function Documentation

◆ CallEventManager

friend class CallEventManager

friend

Definition at line 165 of file CallEvent.h.

◆ llvm::IntrusiveRefCntPtrInfo

template<typename T >

friend struct llvm::IntrusiveRefCntPtrInfo

friend

Definition at line 157 of file CallEvent.h.

Member Data Documentation

◆ Data

const void* clang::ento::CallEvent::Data

protected

Definition at line 149 of file CallEvent.h.

Referenced by clang::CXXDestructorCall::getCXXThisVal(), clang::CXXConstructorCall::getCXXThisVal(), clang::CXXConstructorCall::getExtraInvalidatedValues(), and clang::ObjCMethodCall::getMessageKind().

◆ Location

SourceLocation clang::ento::CallEvent::Location

protected

Definition at line 154 of file CallEvent.h.

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

include/clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h
lib/StaticAnalyzer/Core/CallEvent.cpp

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ BindingsTy

◆ FrameBindingTy

◆ Kind

◆ param_type_iterator

◆ ValueList

Constructor & Destructor Documentation

◆ CallEvent() [1/3]

◆ CallEvent() [2/3]

◆ CallEvent() [3/3]

◆ ~CallEvent()

Member Function Documentation

◆ argumentsMayEscape()

◆ cloneTo()

◆ cloneWithState() [1/3]

◆ cloneWithState() [2/3]

◆ cloneWithState() [3/3]

◆ dump() [1/2]

◆ dump() [2/2]

◆ getAdjustedParameterIndex()

◆ getArgExpr()

◆ getArgSourceRange()

◆ getArgSVal()

◆ getASTArgumentIndex()

◆ getCalleeAnalysisDeclContext()

◆ getCalleeIdentifier()

◆ getCalleeStackFrame()

◆ getDecl()

◆ getDeclaredResultType()

◆ getExtraInvalidatedValues()

◆ getInitialStackFrameContents()

◆ getKind()

◆ getLocationContext()

◆ getNumArgs()

◆ getOriginExpr()

◆ getParameterLocation()

◆ getProgramPoint()

◆ getResultType()

◆ getReturnValue()

◆ getRuntimeDefinition()

◆ getSourceRange()

◆ getState()

◆ getSVal()

◆ hasNonNullArgumentsWithType()

◆ hasNonZeroCallbackArg()

◆ hasVoidPointerToNonConstArg()

◆ invalidateRegions()

◆ isArgumentConstructedDirectly()

◆ isCalled()

◆ isCallStmt()

◆ isGlobalCFunction()

◆ isInSystemHeader()

◆ isVariadic()

◆ operator=()

◆ param_type_begin()

◆ param_type_end()

◆ parameters()

Friends And Related Function Documentation

◆ CallEventManager

◆ llvm::IntrusiveRefCntPtrInfo

Member Data Documentation

◆ Data

◆ Location