[Bug libstdc++/78420] std::less 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:

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                 CC|                            |ville.voutilainen at gmail dot 
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--- Comment #9 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Patch available:

https://gcc.gnu.org/ml/gcc-patches/2017-01/msg01688.html