[Bug c++/53281] poor error message for calling a non-const method from a const object

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53281

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
N.B. comment 6 is the subject of PR 85958 which is really a different bug to
this one. This is about invalid member function calls on cv-qualified objects,
and 85958 is about invalid attempts to bind references to cv-qualified objects.