[libcxx-commits] [libcxx] [ASan][libc++] Annotating `std::basic_string` with all allocators (PR #75845)

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https://github.com/EricWF approved this pull request.

I think this LGTM, but it needs updating since we're not going to land the `if constexpr` magic it's using. But I think we have a good handle on ensuring this is no overhead by other means.

If you wouldn't mind giving me a few days to test this internally before landing, I would appreciate it. But if there's time pressure to land this, that's OK too.

https://github.com/llvm/llvm-project/pull/75845