[libcxx-commits] [libcxx] [libc++] Document our ABI guarantees and what ABI flags exist to modify these guarantees (PR #132615)

[Louis Dionne via libcxx-commits]

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+libc++'s ABI Guarantees
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ldionne wrote:

About the location of this file, I'd be okay with putting it in `libcxx/docs/ABIGuarantees.rst` and merely linking it from the vendor documentation page.

https://github.com/llvm/llvm-project/pull/132615