// Copyright (c) 2015, 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 = 2.7

// This program crashes the SSA backend. http://dartbug.com/24635.

import "package:expect/expect.dart";

class A {
  var a;
  var b;

  factory A(a, x) = A.q;

  // @pragma('dart2js:noInline')  // This annotation causes the test to compile on SSA backend.
  A.q(this.a, x) : b = x == null ? null : new W(x);
}

class W {
  var a;
  W(this.a);
}

measure(x, m) {
  if (x == null) {
    m['null']++;
  } else if (x is W) {
    m['W']++;
    measure(x.a, m);
  } else if (x is A) {
    m['A']++;
    measure(x.a, m);
    measure(x.b, m);
  }
  return m;
}

main() {
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null))))))), new A(new A(new A(new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null)))), new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))))), new A(new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null)))), new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null)))))), new A(new A(new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null)))), new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))))), new A(new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null)))), new A(new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))), new A(new A(new A(null, null), new A(null, null)), new A(new A(null, null), new A(null, null))))))))))));

  var m = measure(e, {'null': 0, 'A': 0, 'W': 0});
  Expect.equals(4096, m['null']);
  Expect.equals(4095, m['A']);
  Expect.equals(2047, m['W']);
}