[Bug libstdc++/108952] [10/11/12/13 Regression] Regression in uses_allocator_construction_args for pair of rvalue references

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108952

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Regression in               |[10/11/12/13 Regression]
                   |uses_allocator_construction |Regression in
                   |_args for pair of rvalue    |uses_allocator_construction
                   |references                  |_args for pair of rvalue
                   |                            |references
           Keywords|                            |rejects-valid
      Known to fail|                            |10.1.0, 11.1.0, 12.1.0,
                   |                            |13.0, 9.2.0
      Known to work|                            |8.5.0, 9.1.0

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Aha, I broke std::get(pair<T1, T2>&&) for C++20 mode.