[Bug c++/65168] diagnostic: missing: reference cannot be bound to dereferenced null pointer

[jan.kratochvil at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65168

--- Comment #5 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
(In reply to Manuel López-Ibáñez from comment #3)
> Does this patch work in your real-world code?

There were just many tests like:
  if (!&r)
    return 0;
So it should really work, thanks.