Re: [committed] libstdc++: Guard tr2::bases and tr2::direct_bases with __has_builtin

[Jonathan Wakely]

On Thu, 8 Feb 2024 at 16:02, Jonathan Wakely wrote:

> Tested x86_64-linux. Pusued to trunk. I'll backport it too.
>

Only to gcc-13 though, because __has_builtin(__bases) is false for gcc-12.