Base class for memory leaks checking. More...

#include <checkmemoryleak.h>

Inheritance diagram for CheckMemoryLeak:

Public Types
enum	AllocType { No , Malloc , New , NewArray , File , Fd , Pipe , OtherMem , OtherRes , Many }
	What type of allocation are used. More...

Public Member Functions
	CheckMemoryLeak ()=delete

	CheckMemoryLeak (const CheckMemoryLeak &)=delete

CheckMemoryLeak &	operator= (const CheckMemoryLeak &)=delete

	CheckMemoryLeak (const Tokenizer t, ErrorLogger e, const Settings *s)

void	memoryLeak (const Token *tok, const std::string &varname, AllocType alloctype) const

AllocType	getDeallocationType (const Token *tok, nonneg int varid) const
	Get type of deallocation at given position. More...

AllocType	getAllocationType (const Token tok2, nonneg int varid, std::list< const Function > *callstack=nullptr) const
	Get type of allocation at given position. More...

AllocType	getReallocationType (const Token *tok2, nonneg int varid) const
	Get type of reallocation at given position. More...

bool	isReopenStandardStream (const Token *tok) const
	Check if token reopens a standard stream. More...

bool	isOpenDevNull (const Token *tok) const
	Check if token opens /dev/null. More...

void	memleakError (const Token *tok, const std::string &varname) const
	Report that there is a memory leak (new/malloc/etc) More...

void	resourceLeakError (const Token *tok, const std::string &varname) const
	Report that there is a resource leak (fopen/popen/etc) More...

void	deallocuseError (const Token *tok, const std::string &varname) const

void	mismatchAllocDealloc (const std::list< const Token * > &callstack, const std::string &varname) const

void	memleakUponReallocFailureError (const Token *tok, const std::string &reallocfunction, const std::string &varname) const

AllocType	functionReturnType (const Function func, std::list< const Function > *callstack=nullptr) const
	What type of allocated memory does the given function return? More...

Private Member Functions
void	reportErr (const Token *tok, Severity severity, const std::string &id, const std::string &msg, const CWE &cwe) const
	Report error. More...

void	reportErr (const std::list< const Token * > &callstack, Severity severity, const std::string &id, const std::string &msg, const CWE &cwe) const
	Report error. More...

Private Attributes
const Tokenizer *const	mTokenizer_
	For access to the tokens. More...

ErrorLogger *const	mErrorLogger_
	ErrorLogger used to report errors. More...

const Settings *const	mSettings_
	Enabled standards. More...

Detailed Description

Base class for memory leaks checking.

Definition at line 55 of file checkmemoryleak.h.

Member Enumeration Documentation

◆ AllocType

enum CheckMemoryLeak::AllocType

What type of allocation are used.

. the "Many" means that several types of allocation and deallocation are used

Enumerator
No
Malloc
New
NewArray
File
Fd
Pipe
OtherMem
OtherRes
Many

Definition at line 95 of file checkmemoryleak.h.

Constructor & Destructor Documentation

◆ CheckMemoryLeak() [1/3]

CheckMemoryLeak::CheckMemoryLeak ( )

delete

◆ CheckMemoryLeak() [2/3]

CheckMemoryLeak::CheckMemoryLeak ( const CheckMemoryLeak & )

delete

◆ CheckMemoryLeak() [3/3]

CheckMemoryLeak::CheckMemoryLeak	(	const Tokenizer *	t,
		ErrorLogger *	e,
		const Settings *	s
	)

inline

Definition at line 91 of file checkmemoryleak.h.

Member Function Documentation

◆ deallocuseError()

void CheckMemoryLeak::deallocuseError	(	const Token *	tok,
		const std::string &	varname
	)		const

Definition at line 320 of file checkmemoryleak.cpp.

References CWE, error, and reportErr().

Referenced by CheckLeakAutoVar::deallocUseError(), and CheckMemoryLeakInFunction::getErrorMessages().

◆ functionReturnType()

CheckMemoryLeak::AllocType CheckMemoryLeak::functionReturnType	(	const Function *	func,
		std::list< const Function * > *	callstack = `nullptr`
	)		const

What type of allocated memory does the given function return?

Definition at line 330 of file checkmemoryleak.cpp.

References Token::astOperand1(), Token::astOperand2(), Scope::bodyEnd, Scope::bodyStart, Variable::declarationId(), findLambdaEndToken(), Function::functionScope, getAllocationType(), Function::hasBody(), Variable::isLocal(), Variable::isStatic(), Token::Match(), Token::next(), No, nonneg, and Token::variable().

Referenced by getAllocationType().

◆ getAllocationType()

CheckMemoryLeak::AllocType CheckMemoryLeak::getAllocationType	(	const Token *	tok2,
		nonneg int	varid,
		std::list< const Function * > *	callstack = `nullptr`
	)		const

Get type of allocation at given position.

Definition at line 55 of file checkmemoryleak.cpp.

References Token::astOperand1(), Library::deallocId(), Fd, File, Token::function(), functionReturnType(), Library::getAllocId(), getReallocationType(), Settings::hasLib(), Token::isCpp(), Library::ismemory(), Token::isName(), Settings::library, Token::link(), Malloc, Token::Match(), mSettings_, New, NewArray, Token::next(), No, numberOfArguments(), Scope::numConstructors, OtherMem, OtherRes, Pipe, Token::simpleMatch(), Token::str(), Token::strAt(), Token::tokAt(), and Token::type().

Referenced by CheckMemoryLeakNoVar::checkForUnreleasedInputArgument(), CheckMemoryLeakNoVar::checkForUnusedReturnValue(), CheckMemoryLeakInClass::checkPublicFunctions(), CheckMemoryLeakStructMember::checkStructVariable(), functionReturnType(), and CheckMemoryLeakInClass::variable().

◆ getDeallocationType()

CheckMemoryLeak::AllocType CheckMemoryLeak::getDeallocationType	(	const Token *	tok,
		nonneg int	varid
	)		const

Get type of deallocation at given position.

Parameters

tok	position
varid	variable id

Returns: type of deallocation

Definition at line 188 of file checkmemoryleak.cpp.

References Token::astOperand1(), Token::astOperand2(), Library::deallocId(), Fd, File, Library::getDeallocId(), Settings::hasLib(), Token::isCpp(), Library::ismemory(), Settings::library, Malloc, Token::Match(), mSettings_, New, NewArray, Token::next(), Token::nextArgument(), No, OtherMem, OtherRes, Pipe, Token::simpleMatch(), Token::str(), Token::strAt(), Token::tokAt(), and Token::varId().

Referenced by CheckMemoryLeakStructMember::checkStructVariable(), and CheckMemoryLeakInClass::variable().

◆ getReallocationType()

CheckMemoryLeak::AllocType CheckMemoryLeak::getReallocationType	(	const Token *	tok2,
		nonneg int	varid
	)		const

Get type of reallocation at given position.

Definition at line 148 of file checkmemoryleak.cpp.

References Token::astOperand1(), Library::deallocId(), File, getArguments(), Library::getReallocFuncInfo(), Library::getReallocId(), Token::isCast(), Library::ismemory(), Token::isUnaryOp(), Settings::library, Token::link(), Malloc, Token::Match(), mSettings_, Token::next(), No, numberOfArguments(), OtherMem, OtherRes, Library::AllocFunc::reallocArg, and Token::str().

Referenced by CheckMemoryLeakInFunction::checkReallocUsage(), getAllocationType(), and isReopenStandardStream().

◆ isOpenDevNull()

bool CheckMemoryLeak::isOpenDevNull ( const Token * tok ) const

Check if token opens /dev/null.

Parameters

tok	token to check

Definition at line 256 of file checkmemoryleak.cpp.

References getArguments(), Settings::hasLib(), mSettings_, numberOfArguments(), Token::simpleMatch(), and Token::str().

Referenced by CheckMemoryLeakNoVar::checkForUnusedReturnValue().

◆ isReopenStandardStream()

bool CheckMemoryLeak::isReopenStandardStream ( const Token * tok ) const

Check if token reopens a standard stream.

Parameters

tok	token to check

Definition at line 243 of file checkmemoryleak.cpp.

References File, getArguments(), getReallocationType(), Library::getReallocFuncInfo(), Settings::library, Token::Match(), mSettings_, numberOfArguments(), and Library::AllocFunc::reallocArg.

Referenced by CheckMemoryLeakNoVar::checkForUnreleasedInputArgument(), and CheckMemoryLeakNoVar::checkForUnusedReturnValue().

◆ memleakError()

void CheckMemoryLeak::memleakError	(	const Token *	tok,
		const std::string &	varname
	)		const

Report that there is a memory leak (new/malloc/etc)

Parameters

tok	token where memory is leaked
varname	name of variable

Definition at line 302 of file checkmemoryleak.cpp.

References CWE, error, and reportErr().

Referenced by CheckMemoryLeakInFunction::getErrorMessages(), CheckLeakAutoVar::leakError(), and memoryLeak().

◆ memleakUponReallocFailureError()

void CheckMemoryLeak::memleakUponReallocFailureError	(	const Token *	tok,
		const std::string &	reallocfunction,
		const std::string &	varname
	)		const

Definition at line 307 of file checkmemoryleak.cpp.

References CWE, error, and reportErr().

Referenced by CheckMemoryLeakInFunction::checkReallocUsage(), and CheckMemoryLeakInFunction::getErrorMessages().

◆ memoryLeak()

void CheckMemoryLeak::memoryLeak	(	const Token *	tok,
		const std::string &	varname,
		AllocType	alloctype
	)		const

Definition at line 271 of file checkmemoryleak.cpp.

References Fd, File, memleakError(), OtherRes, Pipe, and resourceLeakError().

Referenced by CheckMemoryLeakStructMember::checkStructVariable().

◆ mismatchAllocDealloc()

void CheckMemoryLeak::mismatchAllocDealloc	(	const std::list< const Token * > &	callstack,
		const std::string &	varname
	)		const

Definition at line 325 of file checkmemoryleak.cpp.

References CWE, error, and reportErr().

Referenced by CheckMemoryLeakInFunction::getErrorMessages(), CheckLeakAutoVar::mismatchError(), and CheckMemoryLeakInClass::variable().

◆ operator=()

CheckMemoryLeak& CheckMemoryLeak::operator= ( const CheckMemoryLeak & )

delete

◆ reportErr() [1/2]

void CheckMemoryLeak::reportErr	(	const std::list< const Token * > &	callstack,
		Severity	severity,
		const std::string &	id,
		const std::string &	msg,
		const CWE &	cwe
	)		const

private

Report error.

Similar with the function Check::reportError

Parameters

callstack	callstack of error
severity	the severity of the bug
id	type of message
msg	text
cwe	cwe number

Definition at line 293 of file checkmemoryleak.cpp.

References Tokenizer::list, mErrorLogger_, mTokenizer_, normal, ErrorLogger::reportErr(), and Check::writeToErrorList().

◆ reportErr() [2/2]

void CheckMemoryLeak::reportErr	(	const Token *	tok,
		Severity	severity,
		const std::string &	id,
		const std::string &	msg,
		const CWE &	cwe
	)		const

private

Report error.

Similar with the function Check::reportError

Parameters

tok	the token where the error occurs
severity	the severity of the bug
id	type of message
msg	text
cwe	cwe number

Definition at line 283 of file checkmemoryleak.cpp.

Referenced by deallocuseError(), memleakError(), memleakUponReallocFailureError(), mismatchAllocDealloc(), and resourceLeakError().

◆ resourceLeakError()

void CheckMemoryLeak::resourceLeakError	(	const Token *	tok,
		const std::string &	varname
	)		const

Report that there is a resource leak (fopen/popen/etc)

Parameters

tok	token where resource is leaked
varname	name of variable

Definition at line 312 of file checkmemoryleak.cpp.

References CWE, error, and reportErr().

Referenced by CheckMemoryLeakInFunction::getErrorMessages(), CheckLeakAutoVar::leakError(), and memoryLeak().

Member Data Documentation

◆ mErrorLogger_

ErrorLogger* const CheckMemoryLeak::mErrorLogger_

private

ErrorLogger used to report errors.

Definition at line 61 of file checkmemoryleak.h.

Referenced by reportErr().

◆ mSettings_

const Settings* const CheckMemoryLeak::mSettings_

private

Enabled standards.

Definition at line 64 of file checkmemoryleak.h.

Referenced by getAllocationType(), getDeallocationType(), getReallocationType(), isOpenDevNull(), and isReopenStandardStream().

◆ mTokenizer_

const Tokenizer* const CheckMemoryLeak::mTokenizer_

private

For access to the tokens.

Definition at line 58 of file checkmemoryleak.h.

Referenced by reportErr().

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

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ AllocType

Constructor & Destructor Documentation

◆ CheckMemoryLeak() [1/3]

◆ CheckMemoryLeak() [2/3]

◆ CheckMemoryLeak() [3/3]

Member Function Documentation

◆ deallocuseError()

◆ functionReturnType()

◆ getAllocationType()

◆ getDeallocationType()

◆ getReallocationType()

◆ isOpenDevNull()

◆ isReopenStandardStream()

◆ memleakError()

◆ memleakUponReallocFailureError()

◆ memoryLeak()

◆ mismatchAllocDealloc()

◆ operator=()

◆ reportErr() [1/2]

◆ reportErr() [2/2]

◆ resourceLeakError()

Member Data Documentation

◆ mErrorLogger_

◆ mSettings_

◆ mTokenizer_