Debugging and memory

0xCC: uninitialised memory (e.g. on the stack).

0xCD: uninitialised memory allocated on the heap (when using the debug version of the heap manager)

0xDD: deleted memory on the heap (when using the debug version of the heap manager)

0xFD: unused guard bytes either side of a memory block allocated on the heap (when using the debug version of the heap manager)