How to trace memory leaks

[rmirani]

Hi,

I'm having some problems with detecting the cause of memory leaks in my code.
The problem here is that at the end of a debug I get a memory dump of all detected leaks, but line in the code where the memory was assigned is not provided.

So for example a dump will look like this:

Detected memory leaks!
Dumping objects ->
{78} normal block at 0x001910D0, 32 bytes long.
Data: < > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Object dump complete.
The thread 0x1158 has exited with code 0 (0x0).
The program 'C:\SOFTWARE\memoryleaks\Debug\memoryleaks.exe' has exited with code 0 (0x0).


But not the location in the code.
Is there some way of getting this information?

Thanks!

[ovidiucucu]

Add this at the beginning of source (.cpp) file

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

[rmirani]

Got that one already.

But that only works for things such as:

double * d;
d=new double;

but not for

double * d;
d=(double *)calloc(4,sizeof(double));

It's the second one where I suspect my memory leaks are, and the ifdef DEBUG line doesn't work here.

[STLDude]

Not a help with memory leak, but why are you mixing C and C++ memory allocations?

[Paul McKenzie]

Got that one already.

But that only works for things such as:

double * d;
d=new double;

but not for

double * d;
d=(double *)calloc(4,sizeof(double));

It's the second one where I suspect my memory leaks are, and the ifdef DEBUG line doesn't work here.

Then replace that calloc() line with operator "new".

Heck, even better -- replace that whole thing with std::vector<double>. Then you don't worry about memory leaks at all.

Regards,

Paul McKenzie