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If a final instance variable is initialized at the point of declaration, it is a runtime error if it is initialized again in a constructor’s initializer list or by an initializing formal. If any instance field is initialized more than once in the initializer list of a constructor, or by an initializing formal parameter, it is a compile time error. Adding a new test to cover the expected runtime error. Fixes issue 13335. R=regis@google.com Review URL: https://codereview.chromium.org//505033002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@39562 260f80e4-7a28-3924-810f-c04153c831b5
25 lines
728 B
Dart
25 lines
728 B
Dart
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Check that duplicate initialization of a final field is a runtime error.
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class Class {
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final f = 10;
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Class(v) : f = v; /// 01: runtime error, static type warning
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Class(this.f); /// 02: runtime error, static type warning
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// If a field is initialized multiple times in the initializer
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// list, it's a compile time error.
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Class(this.f) : f = 0; /// 03: compile-time error
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}
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main() {
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new Class(5); /// 01: continued
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new Class(5); /// 02: continued
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new Class(5); /// 03: continued
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}
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