[PATCH] D96175: [clang] Add support for attribute 'swift_async_error'

[Erik Pilkington via Phabricator via cfe-commits]

erik.pilkington created this revision.
erik.pilkington added reviewers: doug.gregor, aaron.ballman.
Herald added subscribers: jdoerfert, jkorous.
erik.pilkington requested review of this revision.

This attribute specifies how an error is represented for a swift async method. rdar://71941280


https://reviews.llvm.org/D96175

Files:
  clang/include/clang/Basic/Attr.td
  clang/include/clang/Basic/AttrDocs.td
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/lib/Sema/SemaDeclAttr.cpp
  clang/test/Misc/pragma-attribute-supported-attributes-list.test
  clang/test/SemaObjC/attr-swift-async-error.m

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