[PATCH] libstdc++: Support std::is_aggregate on clang++ (was [cfe-dev] clang++: std::is_aggregate unusable with clang-5.0/libstdc++-7)

[Katsuhiko Nishimra]

On Mon, Jul 31, 2017 at 03:53:42PM +0100, Jonathan Wakely wrote:
> This __has_bultin check only exists for Clang, so should be replaced
> by the correct __is_identifier check, not left there in addition to
> it.

I see. Actually I've guessed so, and thank you for clarifying it.
I'm attaching a replacing patch. Please take a look at it.

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