Debug Assertion Failed

Davitor

Hi All how to solve this Debug.

unhandled exception at 0x00541ccf in Test.exe:0xC0000005;Access vilolation reading location 0xfeeefeee

Plz help me

Cedric Moonen

Davitor wrote:

how to solve this Debug

One day you'll have to learn how to use your debugger instead of posting a question each time you have an assert failure. Furthermore, we can't help at all because you didn't provide any usefull information (no code, no crash location, ...).

Cédric Moonen Software developer
Charting control [v2.0] OpenGL game tutorial in C++

Rajesh R Subramanian

Without looking at the code that crashed and possibly the call stack at the time of crash, nobody can help you. Well, CPallini may be.

It is a crappy thing, but it's life -^ Carlo Pallini

Davitor

Thanks for reply. i use debugger but i havn't found that time exception.

void CDelayedDirectoryChangeHandler::On_FileAdded(const CString & strFileName)
{
CStringArray szaddcopyFiles;
CString strFileName;
CString path="D:\\DVD";
szaddcopyFiles.Add(strFileName);

int numofcopyitems = szaddcopyFiles.GetSize();
if (numofcopyitems > 0)
{
tr=1;
for(;aq<numofcopyitems;)
{
finalString=szaddcopyFiles.GetAt(i);

 strFileName1=finalString;
 for(int idc=0;idc<5;idc++)
 {
	AfxBeginThread(WorkerThreadProc1,NULL,THREAD\_PRIORITY\_NORMAL,0,0,NULL);
	WaitForSingleObject(WorkerThreadProc1, INFINITE);
 }

}
}

	if(tr==1)
	{
		
		szaddcopyFiles.RemoveAll();
		tr=0;
	}

}

UINT WorkerThreadProc(LPVOID Param)
{
CFileOperation fo;
CString tr=finalString;

	int nLen = tr.GetLength();
	
	LPCSTR lpszBuf = tr.GetBufferSetLength(nLen);
	tr.ReleaseBuffer(nLen);
	LPCSTR pF=lpszBuf;
	
	
		CStdioFile file;
		fo.SetOverwriteMode(TRUE);
		if(fo.Copy(pF,pT));
		

		//int nPos1121 = finalString.ReverseFind('\\\\');
		int nPos2121 = finalString.ReverseFind('.');

if( nPos2121 > -1)
{
if (file.Open(_T(finalString), CFile::modeRead | CFile::modeNoTruncate))
{

				ULONGLONG dwFileSize;
				dwFileSize = GetFileSize(file,  NULL);
				float fVar;
				str1.Format(\_T("%I64u"), dwFileSize);
				file.Close();
			}
		


	AfxBeginThread(WorkerThreadProccd,NULL,THREAD\_PRIORITY\_NORMAL,0,0,NULL);
	WaitForSingleObject(WorkerThreadProccd, INFINITE);

}
return TRUE;
}
UINT WorkerThreadProccd(LPVOID Param)
{
CFileOperation fo;
CString tr1=finalString;
int nLen1 = tr1.GetLength();
//LPCSTR lpszBuf1 = tr1.GetBuffer(nLen1);
LPCSTR lpszBuf1 = tr1.GetBufferSetLength(nLen1);
tr1.ReleaseBuffer(nLen1);
LPCSTR pF1=lpszBuf1;

	if(fo.Copy(pF1,pT));
return TRUE;

}

Now i hope you will help me..

Cedric Moonen

Davitor wrote:

Now i hope you will help me..

It would much easier if you provide the exact crash location, and eventually copy the call stack.

Cédric Moonen Software developer
Charting control [v2.0] OpenGL game tutorial in C++

Davitor

crash location showing here.

ATLASSERT( nLength <= GetData()->nAllocLength );

in file atlsimpstr.h. Plz help me..

Rajesh R Subramanian

Provide only the code that has relevance with this issue and take your time to align the code properly. Also, what is tr, finalstring, etc.,? There's a global tr (I don't see it declared anywhere) and another tr inside your worker thread function code with local scope. A perfect recipe for disaster. This is one rare case where I'm going to encourage cross-posting. You may kindly cross-post your code at the coding horror forum too.

It is a crappy thing, but it's life -^ Carlo Pallini

Davitor

Thanks Subramanian ji i had send code where issue will be generated.And next time i align code proper.

Rajesh R Subramanian

Hello! Which line of "your" code is triggering this assertion?

It is a crappy thing, but it's life -^ Carlo Pallini

Davitor

Yes tr, finalstring both are globle. Worker thread it's not tr it is tt.So sorry for that.

Davitor

That's a problem Subramanian ji. When i go through Debug then i han't got assertion and when i go through normal mode then i got some time this assertion.This assertion not come regullar.So i han't got exact line of code.If it is possible then help me

Cedric Moonen

Rajesh R Subramanian wrote:

This is one rare case where I'm going to encourage cross-posting. You may kindly cross-post your code at the coding horror forum too.

:laugh:

Cédric Moonen Software developer
Charting control [v2.0] OpenGL game tutorial in C++

chirag_chauhan

It's better if you can try out sample application with minimum code including function that cause the error that will help you to get into exact problem. And it will also helps others to find out exact cause of problem and to give appropriate solution.

Rajesh R Subramanian

Try different test cases and narrow down the number of cases for which the crash is occurring. You might as well output text to the debugger window from within your code (if you are not running under the VS debugger, you can still use an external debugger[^] (just connect it to the local machine) and use something like OutputDebugString[^] to print to the debugger). The actual problem might be something as trivial as writing to a pointer that has been released, accessing memory that you don't own, etc., But you need to locate it first.

It is a crappy thing, but it's life -^ Carlo Pallini

Davitor

Thanks for debugger information.How can i use it?

Davitor

external debugger

is not working.And i have no idia how to find assertion line plz help me

David Crow

An assertion is completely different than an exception. So which is it?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Lost User

Davitor wrote:

Access vilolation reading location 0xfeeefeee

0xfeeefeee is a Magic Number[^] which has a meaning. This essentially means that you are trying to access memory AFTER it has been freed. You should begin debugging by checking the variables that you are accessing in your worker thread. Best Wishes, -David Delaune

Stephen Hewitt

Google is your friend: try this[^].

Steve

CPallini

Welcome pal. BTW That's wonderful. :-D

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