[llvm-branch-commits] [libcxx] Prepare libcxx and libcxxabi for pointer field protection. (PR #151651)

[Peter Collingbourne via llvm-branch-commits]

pcc wrote:

Thanks for the review!

> Now that this is the last patch missing for PFP support, is it feasible to add CI coverage in this patch? If not, let's understand what's missing for us to have coverage for it, since otherwise this code is technically all dead.

CI coverage will need an Arm Linux machine with a recent compiler build installed. After #152414 lands, we will be able to make that machine run `run-buildbot generic-pfp`.

https://github.com/llvm/llvm-project/pull/151651