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

[manu at gcc dot gnu.org]

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

--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Or even:

int fii(int p) {
  int &r=p;
  return !&r;
}