[libcxx-commits] [libcxx] [libc++] Allow the use of extensions in the implementation (PR #79532)

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EricWF wrote:

Is there a way to observe the issue or at least the structure that causes
the issue in the AST?

On Thu, Mar 14, 2024 at 9:41 AM Sam McCall ***@***.***> wrote:

> Thanks! If we can avoid this entirely that seems ideal for everyone.
>
> We only see the regression in our modular builds. (Which unfortunately is
> our main mode).
> We use clang header modules, but I'd guess this isn't specific to that
> mode.
> libc++ has modules buildbots right? I'll see if I can scrape some timings
> out of those, 50% might be possible to see through noise.
>
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https://github.com/llvm/llvm-project/pull/79532