Digikam::AbstractMarkerTiler::Tile Class Reference

Inheritance diagram for Digikam::AbstractMarkerTiler::Tile:

Public Member Functions
virtual	~Tile ()
Tile *	addChild (const int linearIndex, Tile *tilePointer)
bool	childrenEmpty () const
void	deleteChild (Tile *const childTile, const int knownLinearIndex=-1)
	Sets the pointer to a child tile to zero and deletes the child.
Tile *	getChild (const int linearIndex)
int	nextNonEmptyIndex (int linearIndex) const
	returns the next non empty child index or -1.

Constructor & Destructor Documentation

~Tile()

Digikam::AbstractMarkerTiler::Tile::~Tile ( )

virtual

Note

The destructor must be virtual: tiles are created by the tileNew() factory of the subclasses and are always deleted through Tile pointers (rootTile, ~Tile(), deleteChild()). Making only the subclass destructor virtual moves the Tile subobject to a nonzero offset, so deleting through a Tile pointer frees an interior pointer and crashes. With no virtual destructor at all the subclass destructor is skipped (leaking its members) and C++14 sized deallocation passes the wrong size, which aborts under allocators enforcing it, like hardened_malloc. See bug #522748.