cff9e77783
wg21.link/P2552 suggest that __has_cpp_attribute should return a non-zero value for all attributes that the implementation does something interesting with. Clang does something meaninful with all attributes except for: - no_unique_address which we do not support for msvc target - carries_dependency which arguably does nothing interesting. P2552 shies away from specifying a behavior for that attribute (despite being the only one for which a recommandation would have been interesting, arguably) As such, we have nothing to change for this paper. This paper is a DR and clang always behaved reasonably.
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