Introduce .isMalformed

pkg/compiler/lib/src/cps_ir/cps_ir_builder.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.
 
 library dart2js.ir_builder;
 
 import '../closure.dart' hide ClosureScope;
 import '../common.dart';
 import '../common/names.dart' show
     Names,
@@ skipping 1390 matching lines @@
         new ir.InvokeMethod(
             iterator,
             Selectors.current,
             currentMask,
             emptyArguments, currentInvoked)));
     // TODO(sra): Does this cover all cases? The general setter case include
     // super.
     // TODO(johnniwinther): Extract this as a provided strategy.
     if (Elements.isLocal(variableElement)) {
       bodyBuilder.buildLocalVariableSet(variableElement, currentValue);
-    } else if (Elements.isErroneous(variableElement)) {
+    } else if (Elements.isMalformed(variableElement)) {
       bodyBuilder.buildErroneousInvocation(variableElement,
           new Selector.setter(
               new Name(variableElement.name, variableElement.library)),
           <ir.Primitive>[currentValue]);
     } else if (Elements.isStaticOrTopLevel(variableElement)) {
       if (variableElement.isField) {
         bodyBuilder.buildStaticFieldSet(variableElement, currentValue);
       } else {
         bodyBuilder.buildStaticSetterSet(variableElement, currentValue);
       }
@@ skipping 1464 matching lines @@
 }
 
 class SwitchCaseInfo {
   final List<ir.Primitive> constants = <ir.Primitive>[];
   final SubbuildFunction buildBody;
 
   SwitchCaseInfo(this.buildBody);
 
   void addConstant(ir.Primitive constant) => constants.add(constant);
 }