// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 2.9

/// @assertion Let e be a setOrMapLiteral.
/// If e has a context C, and the base type of C is Cbase (that is, Cbase is C
/// with all wrapping FutureOrs removed), and Cbase is not ?, then let S be the
/// greatest closure.
/// ...
/// if S is defined and is a subtype of Iterable<Object> and S is not a subtype
/// of Map<Object, Object>, then e is a set literal.
///
/// @description Checks that if C is some subclass of Set<X>, then the literal is
/// a set literal, but it is also a guaranteed type error even if the literal is
/// a set but a wrong type
/// @author sgrekhov@unipro.ru

import "dart:collection";

main() {
  SplayTreeSet s1 = {};            //# 01: compile-time error
  SplayTreeSet<int> s2 = {};       //# 02: compile-time error
  SplayTreeSet<int> s3 = <int>{};  //# 03: compile-time error
}