[Bug c++/109247] [13/14 Regression] optional o; o = {x}; wants to use explicit optional(U) constructor since r13-6765-ga226590fefb35ed6

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109247

--- Comment #16 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jason Merrill from comment #15)
> Discussion in CWG led to this more specific rule that only affects the
> copy/move special member functions, and so doesn't affect the 84849
> testcases:

Correction: it does fix the first three 84849 testcases, which are non-template
forms of the same issue.