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CheckMemoryLeakNoVar Class Reference

detect simple memory leaks (address not taken) More...

#include <checkmemoryleak.h>

Inheritance diagram for CheckMemoryLeakNoVar:
Check CheckMemoryLeak

Public Member Functions

 CheckMemoryLeakNoVar ()
 
- 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
 
Checkoperator= (const Check &)=delete
 
const std::string & name () const
 class name, used to generate documentation More...
 
virtual FileInfogetFileInfo (const Tokenizer &, const Settings &) const
 
virtual FileInfoloadFileInfoFromXml (const tinyxml2::XMLElement *xmlElement) const
 
virtual bool analyseWholeProgram (const CTU::FileInfo *ctu, const std::list< FileInfo * > &fileInfo, const Settings &, ErrorLogger &)
 

Private Member Functions

 CheckMemoryLeakNoVar (const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
 
void runChecks (const Tokenizer &tokenizer, ErrorLogger *errorLogger) override
 run checks, the token list is not simplified More...
 
void check ()
 
void checkForUnreleasedInputArgument (const Scope *scope)
 Check if an input argument to a function is the return value of an allocation function like malloc(), and the function does not release it. More...
 
void checkForUnusedReturnValue (const Scope *scope)
 Check if a call to an allocation function like malloc() is made and its return value is not assigned. More...
 
void checkForUnsafeArgAlloc (const Scope *scope)
 Check if an exception could cause a leak in an argument constructed with shared_ptr/unique_ptr. More...
 
void functionCallLeak (const Token *loc, const std::string &alloc, const std::string &functionCall)
 
void returnValueNotUsedError (const Token *tok, const std::string &alloc)
 
void unsafeArgAllocError (const Token *tok, const std::string &funcName, const std::string &ptrType, const std::string &objType)
 
void getErrorMessages (ErrorLogger *e, const Settings *settings) const override
 get error messages More...
 
std::string classInfo () const override
 get information about this class, used to generate documentation More...
 
- Private Member Functions inherited from CheckMemoryLeak
 CheckMemoryLeak ()=delete
 
 CheckMemoryLeak (const CheckMemoryLeak &)=delete
 
CheckMemoryLeakoperator= (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...
 

Static Private Member Functions

static std::string myName ()
 

Friends

class TestMemleakNoVar
 

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

Detailed Description

detect simple memory leaks (address not taken)

Definition at line 307 of file checkmemoryleak.h.

Constructor & Destructor Documentation

◆ CheckMemoryLeakNoVar() [1/2]

CheckMemoryLeakNoVar::CheckMemoryLeakNoVar ( )
inline

Definition at line 311 of file checkmemoryleak.h.

◆ CheckMemoryLeakNoVar() [2/2]

CheckMemoryLeakNoVar::CheckMemoryLeakNoVar ( const Tokenizer tokenizer,
const Settings settings,
ErrorLogger errorLogger 
)
inlineprivate

Definition at line 314 of file checkmemoryleak.h.

Member Function Documentation

◆ check()

void CheckMemoryLeakNoVar::check ( )
private

◆ checkForUnreleasedInputArgument()

void CheckMemoryLeakNoVar::checkForUnreleasedInputArgument ( const Scope scope)
private

◆ checkForUnsafeArgAlloc()

void CheckMemoryLeakNoVar::checkForUnsafeArgAlloc ( const Scope scope)
private

◆ checkForUnusedReturnValue()

void CheckMemoryLeakNoVar::checkForUnusedReturnValue ( const Scope scope)
private

◆ classInfo()

std::string CheckMemoryLeakNoVar::classInfo ( ) const
inlineoverrideprivatevirtual

get information about this class, used to generate documentation

Implements Check.

Definition at line 358 of file checkmemoryleak.h.

◆ functionCallLeak()

void CheckMemoryLeakNoVar::functionCallLeak ( const Token loc,
const std::string &  alloc,
const std::string &  functionCall 
)
private

Definition at line 1143 of file checkmemoryleak.cpp.

References CWE772, error, normal, and Check::reportError().

Referenced by checkForUnreleasedInputArgument(), and getErrorMessages().

◆ getErrorMessages()

void CheckMemoryLeakNoVar::getErrorMessages ( ErrorLogger errorLogger,
const Settings settings 
) const
inlineoverrideprivatevirtual

get error messages

Implements Check.

Definition at line 347 of file checkmemoryleak.h.

References functionCallLeak(), returnValueNotUsedError(), and unsafeArgAllocError().

◆ myName()

static std::string CheckMemoryLeakNoVar::myName ( )
inlinestaticprivate

Definition at line 354 of file checkmemoryleak.h.

◆ returnValueNotUsedError()

void CheckMemoryLeakNoVar::returnValueNotUsedError ( const Token tok,
const std::string &  alloc 
)
private

Definition at line 1148 of file checkmemoryleak.cpp.

References CWE771, error, normal, and Check::reportError().

Referenced by checkForUnusedReturnValue(), and getErrorMessages().

◆ runChecks()

void CheckMemoryLeakNoVar::runChecks ( const Tokenizer ,
ErrorLogger  
)
inlineoverrideprivatevirtual

run checks, the token list is not simplified

Implements Check.

Definition at line 317 of file checkmemoryleak.h.

References check(), and Tokenizer::getSettings().

◆ unsafeArgAllocError()

void CheckMemoryLeakNoVar::unsafeArgAllocError ( const Token tok,
const std::string &  funcName,
const std::string &  ptrType,
const std::string &  objType 
)
private

Definition at line 1153 of file checkmemoryleak.cpp.

References CWE401, inconclusive, Check::reportError(), and warning.

Referenced by checkForUnsafeArgAlloc(), and getErrorMessages().

Friends And Related Function Documentation

◆ TestMemleakNoVar

friend class TestMemleakNoVar
friend

Definition at line 308 of file checkmemoryleak.h.


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