[Bug c++/98642] [10 Regression] wrong "use of deleted function" error

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98642

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |needs-bisection
      Known to work|                            |10.2.0
      Known to fail|                            |10.2.1

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed it broke on the GCC 10 branch after the GCC 10.2 release which
worked,
thus indeed P1 but only is rejected with -std=c++17 not with the default -std
level.

What broke it on the branch?  (maybe reversion is a better fix there?)