Slava Pestov f6e4355b69 Sema: Fix monthly TypeNullifier bug ...

This time, the issue is that TypeNullifier skips bodies of
multi-statement closures. However, ExprRewriter will type
happily pass them on to typeCheckClosureBody(). This could
trigger assertions. Fix this by skipping type checking of
multi-statement closures when diagnosing.

There seems to be a minor QoI regression in some test cases
that already looked pretty dodgy and/or had FIXMEs. However
I think its worth fixing a crash.

2015-12-11 08:58:52 -08:00

303 B

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