A great example at: http://blogs.msdn.com/b/oldnewthing/archive/2014/06/27/10537...
I have read that article before; the usage of the word time travel is nonsense. Author could just as well say the code preceding the ub can get mangled and avoid confusion.
That's a very aggressive way to phrase, "Sorry, I stated that unclearly."
A great example at: http://blogs.msdn.com/b/oldnewthing/archive/2014/06/27/10537...