Deleting MaterialID and MaterialPair without Memory leak

Hi there
I added MaterialID and Pairs to my game today.
When the program exits, the materials are destroyed using
delete ....;

But they made memory leaks in exit.

How do you make the memory leaks disappear?

Can you give more details, how you create/delete the material, the result in the memory leak report? So it can help to find where the problem lies!

Variables with Mat at the start are MaterialID's
Variables with Mat at the end are MaterialPair's

Creating Materials

// Set MaterialIDs/Pairs
MatPlayerMoving = new OgreNewt::MaterialID( m_World );
MatPlayerStill = new OgreNewt::MaterialID( m_World );
MatProjectile = new OgreNewt::MaterialID( m_World );

OgreNewt::MaterialID *MatDefault = const_cast<OgreNewt::MaterialID*>(m_World->getDefaultMaterialID());

DefaultMat = new OgreNewt::MaterialPair(m_World, MatDefault, MatDefault);

DefaultMat->setDefaultElasticity(0);
DefaultMat->setDefaultFriction(0,0);

StillPlayerMat = new OgreNewt::MaterialPair( m_World, MatDefault, MatPlayerStill );

StillPlayerMat->setDefaultElasticity(0.0);
StillPlayerMat->setDefaultFriction(1, 1);

MovingPlayerMat = new OgreNewt::MaterialPair( m_World, MatDefault, MatPlayerMoving );

MovingPlayerMat->setDefaultElasticity(0);
MovingPlayerMat->setDefaultFriction(0,0);


Destroying materials

if(DefaultMat){
delete MovingPlayerMat;
MovingPlayerMat = 0;
}
if(MovingPlayerMat){
delete MovingPlayerMat;
MovingPlayerMat = 0;
}
if(StillPlayerMat){
delete MovingPlayerMat;
MovingPlayerMat = 0;
}
if(MatPlayerMoving){
delete MatPlayerMoving;
MatPlayerMoving = 0;
}
if(MatPlayerStill){
delete MatPlayerStill;
MatPlayerStill = 0;
}
if(MatProjectile){
delete MovingPlayerMat;
MovingPlayerMat = 0;
}


Memory leak log

016236 0x048587C0 0x00000008 0x048587B0 0x00000028 0x00000000 new N N playstate.cpp(80) PlayState::enter
016237 0x04858828 0x0000000C 0x04858818 0x0000002C 0x00000000 new N N playstate.cpp(84) PlayState::enter
016238 0x04858890 0x0000000C 0x04858880 0x0000002C 0x00000000 new N N playstate.cpp(89) PlayState::enter


And I'm quite certain this causes the leak because I had no memory leak until I added this code.

Have you already tried to debug step-by-step through the "if" braces and see if every object is really deleted?

greetings

There is also a tricky behavior with things like if(DefaultMat)
It works only if you declare DefaultMat=NULL; (then I am paranoid enough to only use if (PointerToTest != NULL), not if (PointerToTest) ).

But here are your leaks:


if(DefaultMat){
delete MovingPlayerMat;
MovingPlayerMat = 0;
}



if(StillPlayerMat){
delete MovingPlayerMat;
MovingPlayerMat = 0;
}


and here:


f(MatProjectile){
delete MovingPlayerMat;
MovingPlayerMat = 0;
}