What software and for what PL do You use to detect memory leaks?
Informed analysis exists FOR detecting memory leaks, in my opinion was the best
Deleaker for MSVC VC++.
But the last version was 2006 and was not renewed. You have to look for alternatives.
Why do you think it best? Because during debugging only it has a convenient interface and a following features:

And it is not necessary to scour the console dump a million rows.
Here is the video how to use
Deleaker.