validation-test/compiler_crashers_2_fixed/0066-sr3687.swift

// RUN: %target-swift-frontend %s -emit-ir
// <rdar://problem/31798398>

public protocol QHash : Collection, ExpressibleByArrayLiteral {
  associatedtype Key
  typealias Element = Key

  init()
}

extension QHash {
  init(withElements newElements: Key...) {
    self.init()
  }
}