[Bug libstdc++/87704] [6/7/8/9 Regression] unique_ptr(nullptr_t) requires T to be complete

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87704

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2018-10-23
      Known to work|                            |4.7.4
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org
     Ever confirmed|0                           |1
      Known to fail|                            |4.8.0, 4.8.5, 4.9.4, 5.5.0,
                   |                            |6.4.0, 7.3.0, 8.2.0, 9.0