[PATCH] D36969: [Basic] Add a DiagnosticOr type

[Alex Lorenz via Phabricator via cfe-commits]

arphaman created this revision.

Clang's `DiagnosticOr` type mimics the `Expected` type from LLVM. It either stores a partial diagnostic and its location or a value. I'll be using in https://reviews.llvm.org/D36075.


Repository:
  rL LLVM

https://reviews.llvm.org/D36969

Files:
  include/clang/Basic/DiagnosticOr.h
  unittests/Basic/DiagnosticTest.cpp

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