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

[avi@cloudius-systems.com]

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

--- Comment #5 from Avi Kivity <avi@cloudius-systems.com> ---
That's clang + libstdc++-5.1, so if the problem is in libstdc++, it's the same
bug.