https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117788

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Is the paper that simple?  I thought it says that the array to pointer
conversions no longer happen unless the other operand is a pointer.  Doesn't
that affect overloaded operators as well?
I mean say
struct S {
  bool operator== (int *);
};

bool
foo ()
{
  int a[4] = {};
  return S {} == a;
}
Or are those handled elsewhere?
"The converted operands shall have arithmetic, enumeration, or pointer type."
and corresponding equality sentences would imply that.

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