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Re: [SG10] bump __cpp_deduction_guides to 201703 for P0620?

From: Jason Merrill <jason_at_[hidden]>
Date: Wed, 30 May 2018 11:14:14 -0400
On Tue, May 29, 2018 at 6:20 PM, Richard Smith <richard_at_[hidden]> wrote:
> Hi,
> When implementing some of the recent stdlib class template argument
> deduction changes, we noticed that p0620 substantially changes the rules for
> deduction guides to the point where (eg) our standard library's testsuite
> fails on a compiler that defines __cpp_deduction_guides to the latest
> version described by SD-6.
> I suggest we bump the version from 201611 to 201703 for implementations that
> support P0620. (This leaves Clang 6.0.0 as defining the macro to the older
> version but providing the newer functionality, but that seems preferable to
> making the "full" rule set undetectable.)
> Thoughts?

Makes sense to me.


Received on 2018-05-30 17:14:37