[PATCH] D61858: Make `__is_base_of` more friendly with unions

[Richard Smith - zygoloid via Phabricator via cfe-commits]

rsmith accepted this revision.
rsmith added a comment.

Yeah, this seems to match the library wording. (I think it's short-sighted and over-fitting -- this is baking into the library specification that the language happens to not allow unions to have base classes today -- but this isn't the venue for that discussion.)


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D61858/new/

https://reviews.llvm.org/D61858