[Bug libstdc++/82891] stable_sort() won't compile with function object that takes parameters by non-const reference

[TonyELewis at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82891

--- Comment #1 from Tony E Lewis <TonyELewis at hotmail dot com> ---
I should say that I've also raised the same issue against libc++ :

https://bugs.llvm.org/show_bug.cgi?id=35235