[libcxx-commits] [libcxx] [lldb] [libcxx] adds size-based `__split_buffer` representation to unstable ABI (PR #139632)

[Christopher Di Bella via libcxx-commits]

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cjdb wrote:

I still think that `_LIBCPP_SIZE_BASED_VECTOR` is the most appropriate name, since this work was entirely motivated by size-based vector, and this PR is a precursor to enabling size-based vector in libc++. The changes to `std::deque` are only happenstance, and if I could get away with not making them, then I would.

https://github.com/llvm/llvm-project/pull/139632