[Bug c++/92771] [9/10 Regression] Concept won't use default template argument

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92771

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-12-03
      Known to work|                            |8.3.1
     Ever confirmed|0                           |1
      Known to fail|                            |10.0, 9.1.0, 9.2.0, 9.2.1