   var match: [(Int, Int)] = []
   var row = 1
   var col = 2
-  
+
   match.append(row, col)  // expected-error {{instance method 'append' expects a single parameter of type '(Int, Int)'}} {{16-16=(}} {{24-24=)}}
 }
 

// Tuple size mismatch.
f1(
   f4 // expected-error {{cannot convert value of type '(Int) -> Int' to expected argument type '(Int, Float) -> Int'}}
   ) 

// Tuple element unused.
f0(i, i,

// <rdar://problem/22276040> QoI: not great error message with "withUnsafePointer" sametype constraints
func read2(_ p: UnsafeMutableRawPointer, maxLength: Int) {}
func read<T : BinaryInteger>() -> T? {
  var buffer : T
  let n = withUnsafePointer(to: &buffer) { (p) in
    read2(UnsafePointer(p), maxLength: MemoryLayout<T>.size) // expected-error {{cannot convert value of type 'UnsafePointer<_>' to expected argument type 'UnsafeMutableRawPointer'}}
  }
