[Bug c++/101677] [11/12 Regression] Concept with use of incomplete type succeeds on GCC 10.3.0, fails on GCC 11 onward

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101677

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[11 Regression] Concept     |[11/12 Regression] Concept
                   |with use of incomplete type |with use of incomplete type
                   |succeeds on GCC 10.3.0,     |succeeds on GCC 10.3.0,
                   |fails on GCC 11 onward      |fails on GCC 11 onward
      Known to work|                            |10.3.0
   Target Milestone|---                         |11.3
           Keywords|                            |rejects-valid