Jordan Rose 7c8117301a In Swift 3 mode, allow "tuple unsplatting" in certain cases. (#7077) ...

Swift 3.0 allowed constructing an enum or calling a function-typed
property with multiple arguments even when a single argument of tuple
type was expected. Emulate that in Swift 3 mode by wrapping in an
extra level of parentheses when the situation comes up.

Last vestiges of fallout from SE-0110. Hopefully last, anyway. A nice
follow-up to this commit might be to /warn/ in Swift 3 mode when this
happens.

rdar://problem/30171399

2017-01-27 11:19:07 -08:00

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