@propertyWrapper
struct Foo<T> {
  init(initialValue: T) {
    wrappedValue = initialValue
  }

  var wrappedValue: T
}

@propertyWrapper
struct Bar<T> {
  init(initialValue: T) {
    wrappedValue = initialValue
  }

  var wrappedValue: T
}

struct S {
  @Foo @Foo var x: Int = 3

  // This works fine though:
  // @Foo @Bar var x: Int = 3

  mutating func foo() {
    let _ = $x
  }
}

var s = S()
s.foo()