std::auto_ptr and GDB.

I needed to gain access to the contents of an auto_ptr inside of GDB. However, GDB doesn't like the overloaded -> operator, so the simple foo->fnImInterestedIn() doesn't work. Here's the simple pattern:

class bar_t {
  public:
     int fnImInterestedIn();
};

std::auto_ptr<bar_t> foo;
(gdb) p ((struct bar_t *)foo._M_ptr)->fnImInterestedIn()