[Bug c++/85866] [8/9 Regression] too few arguments to function when sfinae on calling pointer to member function

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85866

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-05-22
                 CC|                            |jason at gcc dot gnu.org
      Known to work|                            |7.3.0
     Ever confirmed|0                           |1
      Known to fail|                            |8.1.0, 9.0

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Started with r258824

            PR c++/78489 - wrong SFINAE behavior.

            PR c++/84489
            * pt.c (type_unification_real): Don't defer substitution failure.