checks dealing with suspicious usage of boolean type (not for evaluating conditions) More...

#include <checkbool.h>

Inheritance diagram for CheckBool:

Public Member Functions
	CheckBool ()
	This constructor is used when registering the CheckClass. More...

Public Member Functions inherited from Check
	Check (const std::string &aname)
	This constructor is used when registering the CheckClass. More...

virtual	~Check ()

	Check (const Check &)=delete

Check &	operator= (const Check &)=delete

const std::string &	name () const
	class name, used to generate documentation More...

virtual FileInfo *	getFileInfo (const Tokenizer &, const Settings &) const

virtual FileInfo *	loadFileInfoFromXml (const tinyxml2::XMLElement *xmlElement) const

virtual bool	analyseWholeProgram (const CTU::FileInfo ctu, const std::list< FileInfo > &fileInfo, const Settings &, ErrorLogger &)

Private Member Functions
	CheckBool (const Tokenizer tokenizer, const Settings settings, ErrorLogger *errorLogger)
	This constructor is used when running checks. More...

void	runChecks (const Tokenizer &tokenizer, ErrorLogger *errorLogger) override
	Run checks against the normal token list. More...

void	checkComparisonOfFuncReturningBool ()
	Check for comparison of function returning bool More...

void	checkComparisonOfBoolWithBool ()
	Check for comparison of variable of type bool More...

void	checkIncrementBoolean ()
	Check for using postfix increment on bool More...

void	checkComparisonOfBoolWithInt ()
	Check for suspicious comparison of a bool and a non-zero (and non-one) value (e.g. More...

void	checkAssignBoolToPointer ()
	assigning bool to pointer More...

void	checkAssignBoolToFloat ()
	assigning bool to float More...

void	checkBitwiseOnBoolean ()
	Check for using bool in bitwise expression More...

void	checkComparisonOfBoolExpressionWithInt ()
	Check for comparing a bool expression with an integer other than 0 or 1 More...

void	pointerArithBool ()
	Check for 'if (p+1)' etc. More...

void	pointerArithBoolCond (const Token *tok)

void	returnValueOfFunctionReturningBool ()
	Check if a function returning bool returns an integer other than 0 or 1 More...

void	comparisonOfFuncReturningBoolError (const Token *tok, const std::string &expression)

void	comparisonOfTwoFuncsReturningBoolError (const Token *tok, const std::string &expression1, const std::string &expression2)

void	comparisonOfBoolWithBoolError (const Token *tok, const std::string &expression)

void	incrementBooleanError (const Token *tok)

void	comparisonOfBoolWithInvalidComparator (const Token *tok, const std::string &expression)

void	assignBoolToPointerError (const Token *tok)

void	assignBoolToFloatError (const Token *tok)

void	bitwiseOnBooleanError (const Token *tok, const std::string &expression, const std::string &op, bool isCompound=false)

void	comparisonOfBoolExpressionWithIntError (const Token *tok, bool not0or1)

void	pointerArithBoolError (const Token *tok)

void	returnValueBoolError (const Token *tok)

void	getErrorMessages (ErrorLogger errorLogger, const Settings settings) const override
	get error messages More...

std::string	classInfo () const override
	get information about this class, used to generate documentation More...

Static Private Member Functions
static std::string	myName ()

Additional Inherited Members
Static Public Member Functions inherited from Check
static std::list< Check * > &	instances ()
	List of registered check classes. More...

static void	writeToErrorList (const ErrorMessage &errmsg)
	Write given error to stdout in xml format. More...

Protected Member Functions inherited from Check
	Check (std::string aname, const Tokenizer tokenizer, const Settings settings, ErrorLogger *errorLogger)
	This constructor is used when running checks. More...

void	reportError (const Token *tok, const Severity severity, const std::string &id, const std::string &msg)
	report an error More...

void	reportError (const Token *tok, const Severity severity, const std::string &id, const std::string &msg, const CWE &cwe, Certainty certainty)
	report an error More...

void	reportError (const std::list< const Token * > &callstack, Severity severity, const std::string &id, const std::string &msg)
	report an error More...

void	reportError (const std::list< const Token * > &callstack, Severity severity, const std::string &id, const std::string &msg, const CWE &cwe, Certainty certainty)
	report an error More...

void	reportError (const ErrorPath &errorPath, Severity severity, const char id[], const std::string &msg, const CWE &cwe, Certainty certainty)

void	logChecker (const char id[])
	log checker More...

ErrorPath	getErrorPath (const Token errtok, const ValueFlow::Value value, std::string bug) const

bool	wrongData (const Token tok, const char str)
	Use WRONG_DATA in checkers when you check for wrong data. More...

Static Protected Member Functions inherited from Check
static std::string	getMessageId (const ValueFlow::Value &value, const char id[])

Protected Attributes inherited from Check
const Tokenizer *const	mTokenizer {}

const Settings *const	mSettings {}

ErrorLogger *const	mErrorLogger {}

Detailed Description

checks dealing with suspicious usage of boolean type (not for evaluating conditions)

Definition at line 41 of file checkbool.h.

Constructor & Destructor Documentation

◆ CheckBool() [1/2]

CheckBool::CheckBool ( )

inline

This constructor is used when registering the CheckClass.

Definition at line 44 of file checkbool.h.

◆ CheckBool() [2/2]

CheckBool::CheckBool	(	const Tokenizer *	tokenizer,
		const Settings *	settings,
		ErrorLogger *	errorLogger
	)

inlineprivate

This constructor is used when running checks.

Definition at line 48 of file checkbool.h.

Member Function Documentation

◆ assignBoolToFloatError()

void CheckBool::assignBoolToFloatError ( const Token * tok )

private

Definition at line 482 of file checkbool.cpp.

References CWE704, normal, Check::reportError(), and style.

Referenced by checkAssignBoolToFloat(), and getErrorMessages().

◆ assignBoolToPointerError()

void CheckBool::assignBoolToPointerError ( const Token * tok )

private

Definition at line 334 of file checkbool.cpp.

References CWE587, error, normal, and Check::reportError().

Referenced by checkAssignBoolToPointer(), and getErrorMessages().

◆ bitwiseOnBooleanError()

void CheckBool::bitwiseOnBooleanError	(	const Token *	tok,
		const std::string &	expression,
		const std::string &	op,
		bool	isCompound = `false`
	)

private

Definition at line 136 of file checkbool.cpp.

References CWE398, inconclusive, Check::reportError(), and style.

Referenced by checkBitwiseOnBoolean(), and getErrorMessages().

◆ checkAssignBoolToFloat()

void CheckBool::checkAssignBoolToFloat ( )

private

assigning bool to float

Definition at line 465 of file checkbool.cpp.

References assignBoolToFloatError(), astIsBool(), astIsFloat(), Scope::bodyEnd, Scope::bodyStart, SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), Tokenizer::isCPP(), SimpleEnableGroup< T >::isEnabled(), Check::logChecker(), Check::mSettings, Check::mTokenizer, Token::next(), Settings::severity, and style.

Referenced by runChecks().

◆ checkAssignBoolToPointer()

void CheckBool::checkAssignBoolToPointer ( )

private

assigning bool to pointer

Definition at line 321 of file checkbool.cpp.

References assignBoolToPointerError(), astIsBool(), astIsPointer(), Scope::bodyEnd, Scope::bodyStart, SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), Check::logChecker(), Check::mTokenizer, and Token::next().

Referenced by runChecks().

◆ checkBitwiseOnBoolean()

void CheckBool::checkBitwiseOnBoolean ( )

private

Check for using bool in bitwise expression

Definition at line 91 of file checkbool.cpp.

References astIsBool(), bitwiseOnBooleanError(), Scope::bodyEnd, Scope::bodyStart, Settings::certainty, SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), inconclusive, isConstExpression(), isConvertedToBool(), SimpleEnableGroup< T >::isEnabled(), Settings::library, Check::logChecker(), Check::mSettings, Check::mTokenizer, Token::next(), Settings::severity, and style.

Referenced by runChecks().

◆ checkComparisonOfBoolExpressionWithInt()

void CheckBool::checkComparisonOfBoolExpressionWithInt ( )

private

Check for comparing a bool expression with an integer other than 0 or 1

Definition at line 342 of file checkbool.cpp.

References astIsBool(), Token::astOperand1(), Token::astOperand2(), Scope::bodyEnd, Scope::bodyStart, comparisonOfBoolExpressionWithIntError(), SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), Token::getValueGE(), Token::getValueLE(), ValueFlow::Value::intvalue, SimpleEnableGroup< T >::isEnabled(), Token::isName(), Token::isOp(), Check::logChecker(), Token::Match(), Check::mSettings, Check::mTokenizer, Token::next(), Settings::severity, and warning.

Referenced by runChecks().

◆ checkComparisonOfBoolWithBool()

void CheckBool::checkComparisonOfBoolWithBool ( )

private

Check for comparison of variable of type bool

Definition at line 270 of file checkbool.cpp.

References Scope::bodyEnd, Scope::bodyStart, comparisonOfBoolWithBoolError(), SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), isBool(), Tokenizer::isCPP(), SimpleEnableGroup< T >::isEnabled(), Check::logChecker(), Check::mSettings, Check::mTokenizer, Token::next(), Token::previous(), Settings::severity, Token::str(), style, Token::variable(), and Token::varId().

Referenced by runChecks().

◆ checkComparisonOfBoolWithInt()

void CheckBool::checkComparisonOfBoolWithInt ( )

private

Check for suspicious comparison of a bool and a non-zero (and non-one) value (e.g.

"if (!x==4)")

Definition at line 153 of file checkbool.cpp.

References Token::astOperand1(), Token::astOperand2(), Scope::bodyEnd, Scope::bodyStart, comparisonOfBoolWithInvalidComparator(), SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), Token::isBoolean(), Tokenizer::isCPP(), SimpleEnableGroup< T >::isEnabled(), Check::logChecker(), Check::mSettings, Check::mTokenizer, Token::next(), Settings::severity, Token::str(), Token::varId(), and warning.

Referenced by runChecks().

◆ checkComparisonOfFuncReturningBool()

void CheckBool::checkComparisonOfFuncReturningBool ( )

private

Check for comparison of function returning bool

Definition at line 204 of file checkbool.cpp.

References Token::astOperand1(), Scope::bodyEnd, Scope::bodyStart, comparisonOfFuncReturningBoolError(), comparisonOfTwoFuncsReturningBoolError(), SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), Tokenizer::isCPP(), isCPPCast(), SimpleEnableGroup< T >::isEnabled(), Check::logChecker(), Check::mSettings, Check::mTokenizer, Token::next(), Token::previous(), Settings::severity, Token::simpleMatch(), Token::str(), style, and tokenIsFunctionReturningBool().

Referenced by runChecks().

◆ checkIncrementBoolean()

void CheckBool::checkIncrementBoolean ( )

private

Check for using postfix increment on bool

Definition at line 51 of file checkbool.cpp.

References astIsBool(), Scope::bodyEnd, Scope::bodyStart, SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), incrementBooleanError(), SimpleEnableGroup< T >::isEnabled(), Settings::isPremiumEnabled(), Check::logChecker(), Check::mSettings, Check::mTokenizer, Token::next(), Settings::severity, and style.

Referenced by runChecks().

◆ classInfo()

std::string CheckBool::classInfo ( ) const

inlineoverrideprivatevirtual

get information about this class, used to generate documentation

Implements Check.

Definition at line 131 of file checkbool.h.

◆ comparisonOfBoolExpressionWithIntError()

void CheckBool::comparisonOfBoolExpressionWithIntError	(	const Token *	tok,
		bool	not0or1
	)

private

Definition at line 402 of file checkbool.cpp.

References CWE398, normal, Check::reportError(), and warning.

Referenced by checkComparisonOfBoolExpressionWithInt(), and getErrorMessages().

◆ comparisonOfBoolWithBoolError()

void CheckBool::comparisonOfBoolWithBoolError	(	const Token *	tok,
		const std::string &	expression
	)

private

Definition at line 311 of file checkbool.cpp.

References CWE398, normal, Check::reportError(), and style.

Referenced by checkComparisonOfBoolWithBool(), and getErrorMessages().

◆ comparisonOfBoolWithInvalidComparator()

void CheckBool::comparisonOfBoolWithInvalidComparator	(	const Token *	tok,
		const std::string &	expression
	)

private

Definition at line 180 of file checkbool.cpp.

References Check::reportError(), and warning.

Referenced by checkComparisonOfBoolWithInt(), and getErrorMessages().

◆ comparisonOfFuncReturningBoolError()

void CheckBool::comparisonOfFuncReturningBoolError	(	const Token *	tok,
		const std::string &	expression
	)

private

Definition at line 248 of file checkbool.cpp.

References CWE398, normal, Check::reportError(), and style.

Referenced by checkComparisonOfFuncReturningBool(), and getErrorMessages().

◆ comparisonOfTwoFuncsReturningBoolError()

void CheckBool::comparisonOfTwoFuncsReturningBoolError	(	const Token *	tok,
		const std::string &	expression1,
		const std::string &	expression2
	)

private

Definition at line 257 of file checkbool.cpp.

References CWE398, normal, Check::reportError(), and style.

Referenced by checkComparisonOfFuncReturningBool(), and getErrorMessages().

◆ getErrorMessages()

void CheckBool::getErrorMessages	(	ErrorLogger *	errorLogger,
		const Settings *	settings
	)		const

inlineoverrideprivatevirtual

get error messages

Implements Check.

Definition at line 112 of file checkbool.h.

References assignBoolToFloatError(), assignBoolToPointerError(), bitwiseOnBooleanError(), comparisonOfBoolExpressionWithIntError(), comparisonOfBoolWithBoolError(), comparisonOfBoolWithInvalidComparator(), comparisonOfFuncReturningBoolError(), comparisonOfTwoFuncsReturningBoolError(), incrementBooleanError(), pointerArithBoolError(), and returnValueBoolError().

◆ incrementBooleanError()

void CheckBool::incrementBooleanError ( const Token * tok )

private

Definition at line 68 of file checkbool.cpp.

References CWE398, normal, Check::reportError(), and style.

Referenced by checkIncrementBoolean(), and getErrorMessages().

◆ myName()

static std::string CheckBool::myName ( )

inlinestaticprivate

Definition at line 127 of file checkbool.h.

◆ pointerArithBool()

void CheckBool::pointerArithBool ( )

private

Check for 'if (p+1)' etc.

either somebody forgot to dereference, or else somebody uses pointer overflow

Definition at line 413 of file checkbool.cpp.

References Token::astOperand1(), Token::astOperand2(), Scope::bodyEnd, Scope::classDef, Scope::eDo, Scope::eFor, Scope::eIf, Token::findsimplematch(), Tokenizer::getSymbolDatabase(), Scope::isLoopScope(), Check::logChecker(), Check::mTokenizer, Token::next(), pointerArithBoolCond(), SymbolDatabase::scopeList, Token::tokAt(), and Scope::type.

Referenced by runChecks().

◆ pointerArithBoolCond()

void CheckBool::pointerArithBoolCond ( const Token * tok )

private

Definition at line 436 of file checkbool.cpp.

References Token::astOperand1(), Token::astOperand2(), Token::isBinaryOp(), Token::Match(), pointerArithBoolError(), and Token::str().

Referenced by pointerArithBool().

◆ pointerArithBoolError()

void CheckBool::pointerArithBoolError ( const Token * tok )

private

Definition at line 456 of file checkbool.cpp.

References CWE571, error, normal, and Check::reportError().

Referenced by getErrorMessages(), and pointerArithBoolCond().

◆ returnValueBoolError()

void CheckBool::returnValueBoolError ( const Token * tok )

private

Definition at line 516 of file checkbool.cpp.

References Check::reportError(), and style.

Referenced by getErrorMessages(), and returnValueOfFunctionReturningBool().

◆ returnValueOfFunctionReturningBool()

void CheckBool::returnValueOfFunctionReturningBool ( )

private

Check if a function returning bool returns an integer other than 0 or 1

Definition at line 488 of file checkbool.cpp.

References Scope::bodyEnd, Scope::bodyStart, findLambdaEndToken(), Scope::function, SymbolDatabase::functionScopes, Tokenizer::getSymbolDatabase(), SimpleEnableGroup< T >::isEnabled(), Check::logChecker(), Token::Match(), Check::mSettings, Check::mTokenizer, Token::next(), Function::retDef, returnValueBoolError(), Token::scope(), Settings::severity, Token::simpleMatch(), and style.

Referenced by runChecks().

◆ runChecks()

void CheckBool::runChecks	(	const Tokenizer &	tokenizer,
		ErrorLogger *	errorLogger
	)

inlineoverrideprivatevirtual

Run checks against the normal token list.

Implements Check.

Definition at line 52 of file checkbool.h.

References checkAssignBoolToFloat(), checkAssignBoolToPointer(), checkBitwiseOnBoolean(), checkComparisonOfBoolExpressionWithInt(), checkComparisonOfBoolWithBool(), checkComparisonOfBoolWithInt(), checkComparisonOfFuncReturningBool(), checkIncrementBoolean(), Tokenizer::getSettings(), pointerArithBool(), and returnValueOfFunctionReturningBool().

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

Public Member Functions

Private Member Functions

Static Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ CheckBool() [1/2]

◆ CheckBool() [2/2]

Member Function Documentation

◆ assignBoolToFloatError()

◆ assignBoolToPointerError()

◆ bitwiseOnBooleanError()

◆ checkAssignBoolToFloat()

◆ checkAssignBoolToPointer()

◆ checkBitwiseOnBoolean()

◆ checkComparisonOfBoolExpressionWithInt()

◆ checkComparisonOfBoolWithBool()

◆ checkComparisonOfBoolWithInt()

◆ checkComparisonOfFuncReturningBool()

◆ checkIncrementBoolean()

◆ classInfo()

◆ comparisonOfBoolExpressionWithIntError()

◆ comparisonOfBoolWithBoolError()

◆ comparisonOfBoolWithInvalidComparator()

◆ comparisonOfFuncReturningBoolError()

◆ comparisonOfTwoFuncsReturningBoolError()

◆ getErrorMessages()

◆ incrementBooleanError()

◆ myName()

◆ pointerArithBool()

◆ pointerArithBoolCond()

◆ pointerArithBoolError()

◆ returnValueBoolError()

◆ returnValueOfFunctionReturningBool()

◆ runChecks()