[Bug libstdc++/78420] std::less<T*> is not a total order with -O2 enabled

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78420

Ville Voutilainen <ville.voutilainen at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.5.4
      Known to fail|                            |4.6.4, 4.7.3, 4.8.5, 4.9.3,
                   |                            |5.3.0, 6.1.0, 7.0

--- Comment #10 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Oh well, the patch is using a reinterpret_cast, and I can't fathom how to work
around that problem without compiler help. This problem has been with us since
4.6, so I don't think we should fix it for 7 in its stage4.