[Bug c++/71913] [5/6/7 Regression] Missing copy elision with operator new

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71913

--- Comment #14 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Pádraig Brady from comment #13)
> It would be good to have this backported to the 5 branch.

What do you mean?  I applied the bug fix to the 5 branch back in July (comment
#7), and the testcase fix was applied in August.