[Bug c++/87300] -Wredundant-move gives false positives in C++11 mode

[steinar+gcc at gunderson dot no]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87300

--- Comment #4 from Steinar H. Gunderson <steinar+gcc at gunderson dot no> ---
Wait, can it elide the move even if it's a conversion? How could that work in
the general case?