|  | // Copyright (c) 2013, 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. | 
|  |  | 
|  | /// This is a regression test from issue #29310. The global type-inferrer does | 
|  | /// tracing of closures including allocated classes that implement a `call` | 
|  | /// method. We incorrectly considered also classes with invoked factory | 
|  | /// constructors, even if those were only abstract interfaces or mixins that | 
|  | /// weren't actually allocated explicitly. | 
|  | library regression_29130; | 
|  |  | 
|  | main() { | 
|  | new B(); | 
|  | new C(); | 
|  | } | 
|  |  | 
|  | class A { | 
|  | call() {} | 
|  | } | 
|  |  | 
|  | // interface scenario: we shouldn't trace B | 
|  | abstract class B implements A { | 
|  | factory B() => null; | 
|  | } | 
|  |  | 
|  | // mixin scenario: we should trace C, but we should trace _C | 
|  | abstract class C implements A { | 
|  | factory C() => new D(); | 
|  | } | 
|  |  | 
|  | class D = A with C; |