[PATCH] D12299: [libcxx] ABI-Breaking Fix for ALL undefined behavior in <list>.

[Eric Fiselier via cfe-commits]

EricWF created this revision.
EricWF added reviewers: mclow.lists, danalbert, jroelofs.
EricWF added a subscriber: cfe-commits.

This patch is an ABI-breaking version of D12297. However unlike D12297, this patch does not have any undefined behavior when `element_type` has a stricter alignment requirement than a pointer.

Note: More investigation needs to be done to see *how* ABI-breaking this patch is because it simply replaces `__node_pointer`'s via `__node_base_pointers` and we may be able to sneak that change in.

http://reviews.llvm.org/D12299

Files:
  include/list

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