[Bug libstdc++/90745] [9/10 Regression] std::tuple::operator= parameter causes error outside immediate context

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90745

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2019-06-04
      Known to work|                            |8.3.1
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org
   Target Milestone|---                         |9.2
     Ever confirmed|0                           |1
      Known to fail|                            |10.0, 9.1.0