Yes, "managed C++" is very poorly managed. You can still do things like:

   char foo[42];
   foo[-4] = 0xcafebabe;

and watch your program crash and burn. (Sometimes, though, you get an exception you can catch with try{}/catch{}, instead of an actual segv. It would be hilarious... if only the app I was working on did not use this behavior as part of its string-parsing routine...)