TEST
  1. TEST

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Joe Groff
f7a375e443f
Joe Groff committed 3e8b1eb0b82
ClangImporter: Import block parameters as ``@unchecked (T -> U)?``.

Enable the importing of block parameters as @unchecked optionals, allowing 'nil' to be passed. Fixes <rdar://problem/16193003>.

Swift SVN r16331