Pointer authentication (PAC) for clang#60
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NOTE: This is PR 1 of n for the upcoming v5 major release, targeting the
feature/v5branch. Once the feature branch is stable, it will be merged intomain. This PR introduces critical ABI-breaking changes.Changes
detail/facade_meta_traits.h, which introduces two new public APIs:compact_facade_meta_traitsandflat_facade_meta_traits. These are metadata policy in v5. Currently onlycompact_facade_meta_traitsis used fromcore.h. Later this will become a new dimension offacade, and the reference fromcore.hwill be removed.detail::invoker,detail::inline_meta_storageanddetail::static_meta_storageare the implementation types of the meta traits. When PAC is enabled for compiler ABI, they will have the same level of security strength as virtual functions.Documentation will be updated separately.
(CI is not triggered for the new feature branch (filed #61). Manual CI: https://github.com/mingxwa/proxy/actions/runs/29426699530)
Resolves #7