[Bug c++/65942] [5/6 Regression] [C++14] cannot use std::function as comparator in algorithms

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65942

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #7)
> Yes, and so do 4.8 and 4.9 

That was in response to "clang rejects your testcase, too."