[llvm-branch-commits] [libcxx] [libc++] Add accessor functions to __tree_node_base (PR #147679)

[Louis Dionne via llvm-branch-commits]

https://github.com/ldionne commented:

I think this could be rebased onto `main` -- it doesn't depend on `__pointer_int_pair` in itself.

https://github.com/llvm/llvm-project/pull/147679