[Bug c++/81527] Missing inherited constructor by "using-declarations"

[tuwwcn at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81527

--- Comment #4 from Wei-Wei Tu <tuwwcn at gmail dot com> ---
(In reply to Jonathan Wakely from comment #3)
> I don't think the code is valid, copy/move constructors are not inherited.
> See PR 69853 for a similar bug report.
> 
> *** This bug has been marked as a duplicate of bug 69853 ***

Yes, you are right. I've made a mistake about "using". Thank you for checking
this report.