[Bug libstdc++/116529] Construction of unique_ptr with reference type is rejected because of auto_ptr constructor

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116529

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Do you have an actual use case for this, or are you just reporting it because
there's divergence between implementations?

I raised it with the standards committee and everybody agrees that we should
not support this, so I'm creating a new library issue for it.