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Issue Description:

Given this declaration

struct A<T> {
  let element: T
  
  func f() {}
}

And the code

let value = A(element: 0)
value

If we are running o a top-level code like main.swift and use that type bellow declaration it is fine the completion gives value: A<Int>

But if we use above declaration the code completion gives value: <<error-type>>

The expression `value.f()` type checks fine and compiles correctly. The problem seems to be only on completion.