Check that constant locals have constant initializers.

sdk/lib/_internal/compiler/implementation/resolution/members.dart

 // Copyright (c) 2012, 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.
 
 part of resolution;
 
 abstract class TreeElements {
   Element get currentElement;
   Set<Node> get superUses;
 
@@ skipping 3913 matching lines @@
     }
     return node.source;
   }
 
   visitNodeList(NodeList node) {
     for (Link<Node> link = node.nodes; !link.isEmpty; link = link.tail) {
       SourceString name = visit(link.head);
       VariableElement element =
           new VariableElementX(name, variables, kind, link.head);
       resolver.defineElement(link.head, element);
+      if (definitions.modifiers.isConst()) {
+        compiler.enqueuer.resolution.addPostProcessAction(element, () {
+          compiler.constantHandler.compileVariable(element, isConst: true);
+        });
+      }
     }
   }
 }
 
 /**
  * [SignatureResolver] resolves function signatures.
  */
 class SignatureResolver extends CommonResolverVisitor<Element> {
   final Element enclosingElement;
   final bool defaultValuesAllowed;
@@ skipping 378 matching lines @@
     return e;
   }
 
   /// Assumed to be called by [resolveRedirectingFactory].
   Element visitReturn(Return node) {
     Node expression = node.expression;
     return finishConstructorReference(visit(expression),
                                       expression, expression);
   }
 }