[Bug c++/93490] -Wsuggest-attribute=const suggests const attribute for non-static member function

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93490

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I don't see how the member function is any different from the following
function:

int &f(Class1 *a)
{
  return a->member_;
}