[Bug libstdc++/68880] [4.9 Regression][Bisected to r202992] std::operator< overload ignored when using std::lower_bound

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68880

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I see, sorry, I read "The output below is from gcc 5.3.0, but I just checked
that it is still broken in SVN trunk" to mean it was ok in 4.9

Then it should have been "[4.9/5/6 Regression]" (and all regressions need to
have at least the "known to work" field set).