[Patch] Forward triviality in variant

[Tim Shen via libstdc++]

On Mon, May 29, 2017 at 11:29 PM, Tim Shen <timshen@google.com> wrote:
> This patch implements
> <https://lichray.github.io/trivially_variant.html>, but with more

Actually, it didn't. The copy assign and move assign conditions are
wrong in the patch. Fixed those.


-- 
Regards,
Tim Shen
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