template<...> class A;

template<...> friend class A;

template<...>
class A
{
  template<...>
  class  B
  {...}
  template<>
  class B
  {...}
};

class ChunkMaster
  {
    typedef std::set<Chunk *> ChunkSet;
    typedef std::set<Chunk *> FreeChunkSet;
    typedef ChunkSet::iterator ChunkSetIter;
    typedef FreeChunkSet::iterator FreeChunkSetIter;
    ChunkSet _chunks;
    Chunk *_lastAlloc;
    Chunk *_wholeEmpty;
    Chunk *_lastFree;
    FreeChunkSet _freeChunks;
    unsigned char _maxSlots;
  public:
    ChunkMaster(int maxSlots):_lastAlloc(0),_wholeEmpty(0),_lastFree(0),_maxSlots(maxSlots) {}