What is leaking?

[panzram]

Hi,

I have written an xll (an excel dll) and it leaks like hell. Because of how it's built I have a hard time debuggin it. Could this be leaking?

double test() {
 int dynamicSize = 5;
 std::vector<double> v(dynamicSize);
 double* r = NULL;
 r = new double[dynamicSize];

 delete [] r;
 v.clear();
}

Thanks.

[ashwink911]

how do u know it's leaking? did u check it against any standard memory leak programs or are you just getting an assertion failure at 'delete'?

[cilu]

No, there is no leak here.

[panzram]

ashwink: When I start Excel and look at how much memory it is using, I see that it leaks.

Cilu: Thank you, that's what I thought. It is something else.

[cilu]

Where are you looking for memory usage? Hopefully not in Task Manager, because that can't indicate anything about memory leaks.

[panzram]

Yes, I did look at the task manager. If Excel is constantly eating memory when my test xll is running (and not otherwise), then memory must be leaking as far as I know. I think I found the problem though, and now Excel isn't eating memory anymore.

[Doron Moraz]

Could this be leaking?

There are no memory leaks in the code you've posted.

Just in case that this is a pseudo code make sure that in your implementation, test() is not returning or throwing an exception between the memory allocation and the memory release.


Regards
Doron

[cilu]

Yes, I did look at the task manager. If Excel is constantly eating memory when my test xll is running (and not otherwise), then memory must be leaking as far as I know. I think I found the problem though, and now Excel isn't eating memory anymore.

OK, but don't rely on Task Manager to identify memory leaks. Use appropriate tools for that.

[Lindley]

The task manager is only a first indication that there may be a problem. Don't trust it for anything beyond that.