Argh, this is so often overlooked. NULL POINTER DEREFERENCE IS A POSSIBLE SECURITY HOLE. Sorry about the shouting, I've gone through this so much I feel like my

Argh, this is so often overlooked. NULL POINTER DEREFERENCE IS A POSSIBLE SECURITY HOLE. Sorry about the shouting, I've gone through this so much I feel like my brain is going to explode. Here, read this: http://lwn.net/Articles/360328/ http://lwn.net/Articles/360328/ Don't trust NULL pointer dereference. Even in user code -- it puts you in bad habits.