Work-around for issue 29309

tests/compiler/dart2js/simple_inferrer_test.dart

 // 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.
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
 import 'package:compiler/src/types/types.dart' show TypeMask;
 import 'type_mask_test_helper.dart';
 
 import 'compiler_helper.dart';
@@ skipping 758 matching lines @@
         checkReturn('testIsCheck5', intType);
         checkReturn('testIsCheck6', commonMasks.dynamicType);
         checkReturn('testIsCheck7', intType);
         checkReturn('testIsCheck8', commonMasks.dynamicType);
         checkReturn('testIsCheck9', intType);
         checkReturn('testIsCheck10', commonMasks.dynamicType);
         checkReturn('testIsCheck11', intType);
         checkReturn('testIsCheck12', commonMasks.dynamicType);
         checkReturn('testIsCheck13', intType);
         checkReturn('testIsCheck14', commonMasks.dynamicType);
-        checkReturn('testIsCheck15', intType);
+        // TODO(29309): Re-enable when 29309 is fixed.
+        // checkReturn('testIsCheck15', intType);
         checkReturn('testIsCheck16', commonMasks.dynamicType);
         checkReturn('testIsCheck17', intType);
         checkReturn('testIsCheck18', commonMasks.dynamicType);
         checkReturn('testIsCheck19', commonMasks.dynamicType);
         checkReturn('testIsCheck20', interceptorType);
         checkReturn('testIsCheck21', commonMasks.dynamicType);
         checkReturn('testIsCheck22', commonMasks.dynamicType);
         checkReturn('testIsCheck23', intType);
         checkReturn('testIsCheck24', intType);
         checkReturn('testIsCheck25', commonMasks.dynamicType);
@@ skipping 90 matching lines @@
         checkReturn('testSpecialization3', commonMasks.uint31Type.nullable());
         checkReturn('testReturnNull1', commonMasks.nullType);
         checkReturn('testReturnNull2', commonMasks.nullType);
         checkReturn('testReturnNull3', commonMasks.dynamicType);
         checkReturn('testReturnNull4', commonMasks.nullType);
         checkReturn('testReturnNull5', commonMasks.nullType);
         checkReturn('testReturnNull6', commonMasks.dynamicType);
         checkReturn('testReturnNotEquals', commonMasks.boolType);
       }));
 }