LanguageFeatures/nnbd/const_type_var_elimination_A01_t02.dart

// Copyright (c) 2020, 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.

/**
 * @assertion If performing inference on a const value of a generic class
 * results in inferred type arguments to the generic class which contain free
 * type variables from an enclosing generic class or method, the free type
 * variables shall be eliminated by taking the least closure of the inferred
 * type with respect to the free type variables.
 *
 *   class G<T> {
 *    void foo() {
 *    const List<T> c = <T>[]; // Error
 *    const List<T> d = [];    // The list literal is inferred as <Never>[]
 *    }
 *   }
 *
 * @description Check that [const List<T>] variable of a generic class [G<T>]
 * cannot contain [null].
 *
 * @author iarkh@unipro.ru
 */

class G<T> {
  void foo() {
    const List<T> l1 = [null];
//                      ^^^^
// [analyzer] unspecified
// [cfe] unspecified
  }
}

main() {
  G().foo();
}