Hello there i don’t know is this a bug but it would be nice that application don’t crash when i do such thing:
CCPoint position; //Set for example position.x to NaN;
getSprite()->setPosition(position);
Crush is litle bit funny in CCGeometry::setRect
Also i would like to fix this bug if you accept it 
just give me link to github with issue.
PS. On Android application just do a memory leak so big that it crush app 