Represents an implicit call to a C++ destructor. More...

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

Inheritance diagram for clang::ento::CXXDestructorCall:

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Public Member Functions
SourceRange	getSourceRange () const override
	Returns a source range for the entire call, suitable for outputting in diagnostics.

unsigned	getNumArgs () const override
	Returns the number of arguments (explicit and implicit).

RuntimeDefinition	getRuntimeDefinition () const override
	Returns the definition of the function or method that will be called.

SVal	getCXXThisVal () const override
	Returns the value of the implicit 'this' object.

bool	isBaseDestructor () const
	Returns true if this is a call to a base class destructor.

Kind	getKind () const override
	Returns the kind of call this is.

StringRef	getKindAsString () const override

Public Member Functions inherited from clang::ento::CXXInstanceCall
virtual const Expr *	getCXXThisExpr () const
	Returns the expression representing the implicit 'this' object.

virtual SVal	getCXXThisVal () const
	Returns the value of the implicit 'this' object.

const FunctionDecl *	getDecl () const override
	Returns the declaration of the function or method that will be called.

RuntimeDefinition	getRuntimeDefinition () const override
	Returns the definition of the function or method that will be called.

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

Public Member Functions inherited from clang::ento::AnyFunctionCall
const FunctionDecl *	getDecl () const override
	Returns the declaration of the function or method that will be called.

RuntimeDefinition	getRuntimeDefinition () const override
	Returns the definition of the function or method that will be called.

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

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

ArrayRef< ParmVarDecl * >	parameters () const override
	Return call's formal parameters.

Public Member Functions inherited from clang::ento::CallEvent
CallEvent &	operator= (const CallEvent &)=delete

virtual	~CallEvent ()=default

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

virtual StringRef	getKindAsString () const =0

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

bool	isForeign () const

void	setForeign (bool B) const

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

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

const CFGBlock::ConstCFGElementRef &	getCFGElementRef () const

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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.

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

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

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

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

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

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

virtual std::optional< unsigned >	getAdjustedParameterIndex (unsigned ASTArgumentIndex) const
	Some calls have parameter numbering mismatched from argument numbering.

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

const ConstructionContext *	getConstructionContext () const
	Returns the construction context of the call, if it is a C++ constructor call or a call of a function returning a C++ class instance.

std::optional< SVal >	getReturnValueUnderConstruction () const
	If the call returns a C++ record type then the region of its return value can be retrieved from its construction context.

const CallEventRef	getCaller () const

bool	isCalledFromSystemHeader () const

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

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

param_type_iterator	param_type_end () const

void	dump (raw_ostream &Out) const

void	dump () const

Static Public Member Functions
static bool	classof (const CallEvent *CA)

Static Public Member Functions inherited from clang::ento::CXXInstanceCall
static bool	classof (const CallEvent *CA)

Static Public Member Functions inherited from clang::ento::AnyFunctionCall
static bool	classof (const CallEvent *CA)

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

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

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

Protected Types
using	DtorDataTy = llvm::PointerIntPair< const MemRegion *, 1, bool >

Protected Types inherited from clang::ento::CallEvent
using	ValueList = SmallVectorImpl< SVal >

Protected Member Functions
	CXXDestructorCall (const CXXDestructorDecl DD, const Stmt Trigger, const MemRegion Target, bool IsBaseDestructor, ProgramStateRef St, const LocationContext LCtx, CFGBlock::ConstCFGElementRef ElemRef)
	Creates an implicit destructor.

	CXXDestructorCall (const CXXDestructorCall &Other)=default

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

Protected Member Functions inherited from clang::ento::CXXInstanceCall
	CXXInstanceCall (const CallExpr CE, ProgramStateRef St, const LocationContext LCtx, CFGBlock::ConstCFGElementRef ElemRef)

	CXXInstanceCall (const FunctionDecl D, ProgramStateRef St, const LocationContext LCtx, CFGBlock::ConstCFGElementRef ElemRef)

	CXXInstanceCall (const CXXInstanceCall &Other)=default

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

Protected Member Functions inherited from clang::ento::AnyFunctionCall
	AnyFunctionCall (const Expr E, ProgramStateRef St, const LocationContext LCtx, CFGBlock::ConstCFGElementRef ElemRef)

	AnyFunctionCall (const Decl D, ProgramStateRef St, const LocationContext LCtx, CFGBlock::ConstCFGElementRef ElemRef)

	AnyFunctionCall (const AnyFunctionCall &Other)=default

Protected Member Functions inherited from clang::ento::CallEvent
	CallEvent (const Expr E, ProgramStateRef state, const LocationContext lctx, CFGBlock::ConstCFGElementRef ElemRef)

	CallEvent (const Decl D, ProgramStateRef state, const LocationContext lctx, CFGBlock::ConstCFGElementRef ElemRef)

	CallEvent (const CallEvent &Original)

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

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

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

Friends
class	CallEventManager

Additional Inherited Members
Public Types inherited from clang::ento::CallEvent
using	Kind = CallEventKind

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

using	BindingsTy = SmallVectorImpl< FrameBindingTy >

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

Protected Attributes inherited from clang::ento::CallEvent
const void *	Data

SourceLocation	Location

Detailed Description

Represents an implicit call to a C++ destructor.

This can occur at the end of a scope (for automatic objects), at the end of a full-expression (for temporaries), or as part of a delete.

Definition at line 890 of file CallEvent.h.

Member Typedef Documentation

◆ DtorDataTy

using clang::ento::CXXDestructorCall::DtorDataTy = llvm::PointerIntPair<const MemRegion *, 1, bool>

protected

Definition at line 894 of file CallEvent.h.

Constructor & Destructor Documentation

◆ CXXDestructorCall() [1/2]

clang::ento::CXXDestructorCall::CXXDestructorCall	(	const CXXDestructorDecl *	DD,
		const Stmt *	Trigger,
		const MemRegion *	Target,
		bool	IsBaseDestructor,
		ProgramStateRef	St,
		const LocationContext *	LCtx,
		CFGBlock::ConstCFGElementRef	ElemRef
	)

inlineprotected

Creates an implicit destructor.

Parameters

DD	The destructor that will be called.
Trigger	The statement whose completion causes this destructor call.
Target	The object region to be destructed.
St	The path-sensitive state at this point in the program.
LCtx	The location context at this point in the program.
ElemRef	The reference to this destructor in the CFG.

FIXME: Eventually we want to drop

Parameters

Target	and deduce it from
ElemRef.	To do that we need to migrate the logic for target region lookup from ExprEngine::ProcessImplicitDtor() and make it independent from ExprEngine.

Definition at line 909 of file CallEvent.h.

References clang::ento::CallEvent::Data, clang::Stmt::getEndLoc(), and clang::ento::CallEvent::Location.