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Stack Issues

by Mike Kuklinski · in Torque Game Engine Advanced · 04/22/2006 (3:19 pm) · 4 replies

I am getting a series of stack errors in this file during debug, right when the game is started. They prevent me from debugging, and disabling them crashes the app completely.

They are 'Stack around the variable blahblah was corrupted.' errors.

Most of the errors are occuring in the

'string DXDiagNVUtil::lpcwstrToString( const LPCWSTR in_lpcwstr )'

function.

Any idea what might be wrong?

The below is '/engine/gfx/D3D/DXDiagNVUtil.cpp'. (just that function, because the file is too large to post in it's entirety.)

string DXDiagNVUtil::lpcwstrToString( const LPCWSTR in_lpcwstr )
{
//@ consider using windows.h WideCharToMultiByte(..)
char * mbBuf;
size_t sz;
sz = 2 * wcslen( in_lpcwstr );
mbBuf = new char[sz];
wcstombs( mbBuf, in_lpcwstr, sz ); // convert the string
string outstr;
outstr = mbBuf;
SAFE_ARRAY_DELETE( mbBuf );
return( outstr );
}

It usually gives me the stack error on the return with outstr.
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Torque Owner Jeremiah Fulbright
#1
04/23/2006 (10:45 am)
Is this with MS3, as I thought this was fixed, as it was related to the Unicode system. See where lpcwstrToString is called inside of that class (assuming for console printing of the DirectX Version (which does have issues))... and just comment out areas to disable it all together.

Torque Owner Mike Kuklinski
#2
05/07/2006 (9:54 pm)
Most definately NOT fixed for me in MS3.

To expand:

Run-Time Check Failure #2 - Stack around the variable 'outstr' was corrupted

string DXDiagNVUtil::lpcwstrToString( const LPCWSTR in_lpcwstr )
{
	//@ consider using windows.h  WideCharToMultiByte(..)
	char * mbBuf;
	size_t sz;
	sz = 2 * wcslen( in_lpcwstr );
	mbBuf = new char[sz+1];
	wcstombs( mbBuf, in_lpcwstr, sz+1 );		// convert the string 
	string outstr;
	outstr = mbBuf;
	SAFE_ARRAY_DELETE( mbBuf );
	return( outstr );
}

In actuality, anywhere in that entire file where a string is declared, I get a stack corruption error.

For instance, if I blank that function and have it return "0", this function breaks:

Run-Time Check Failure #2 - Stack around the variable 't' was corrupted

int hackWToI( wstring & in_wstring)
{
   string t = DXDiagNVUtil::WStringToString(in_wstring);
   return atoi(t.c_str());
}

I am using Visual C++ 2005 Express.

Torque Owner Brian Richardson
#3
05/08/2006 (10:57 am)
Have you checked to see if the function is getting NULL passed to it? Might be a simple fix.

Torque Owner Mike Kuklinski
#4
05/08/2006 (11:10 am)
Nope, it is always getting a real string... the function that calls it does a null check already.