[Patch] SFINAE on is_same first in variant's _Tp&& constructor

[Tim Shen via libstdc++]

On Mon, May 22, 2017 at 11:05 AM, Tim Shen <timshen@google.com> wrote:
> On Mon, May 22, 2017 at 6:21 AM, Jonathan Wakely <jwakely@redhat.com> wrote:
> I suggest to cc a front-end person (Jason?) to take a look, as I
> suggested in the bug, and the example: https://godbolt.org/g/AxUv16.

See more discussion in pr80737. Basically in the godbolt example,
turning on and off -DBUG results in different behaviors, but it
shouldn't.


-- 
Regards,
Tim Shen