Pavel Yaskevich 66a79301b4 [CSDiagnostics] Diagnose contextual closure result mismatches via fixes ...

Let's keep track of type mismatch between type deduced
for the body of the closure vs. what is requested
contextually, it makes it much easier to diagnose
problems like:

```swift
func foo(_: () -> Int) {}
foo { "hello" }
```

Because we can pin-point problematic area of the source
when the rest of the system is consistent.

Resolves: rdar://problem/40537960

2018-11-07 14:28:50 -08:00

7.7 KiB

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