[Bug c++/70610] [6 regression] error: invalid initialization of non-const reference of type

[ppalka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70610

--- Comment #3 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Not limited to operator overloads either:

void bar (const int &, int &);
void bar (int &, const int &);
void bar (const int &, const int &);

int a, b;

template <typename T>
void
foo ()
{
  bar (a + 1, b + 2);
}