Produce run-time error when type parameters are accessed from static context.

sdk/lib/_internal/compiler/implementation/dart_backend/placeholder_collector.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 dart_backend;
 
 class LocalPlaceholder {
   final String identifier;
   final Set<Node> nodes;
   LocalPlaceholder(this.identifier) : nodes = new Set<Node>();
@@ skipping 347 matching lines @@
 
   visitNode(Node node) { node.visitChildren(this); }  // We must go deeper.
 
   visitNewExpression(NewExpression node) {
     Send send = node.send;
     InterfaceType type = treeElements.getType(node);
     assert(type != null);
     Element constructor = treeElements[send];
     assert(constructor != null);
     assert(send.receiver == null);
-    if (constructor is !ErroneousElement) {
+    if (!Elements.isErroneousElement(constructor) &&

[ngeoffray, 2012/11/27 09:37:35]

Can that be !Elements.isUnresolved(constructor) ?

[aam-me, 2012/11/28 01:49:47]

Yes, good idea!

+        !Elements.isMalformedElement(constructor)) {
       makeConstructorPlaceholder(node.send.selector, constructor, type);
       // TODO(smok): Should this be in visitNamedArgument?
       // Field names can be exposed as names of optional arguments, e.g.
       // class C {
       //   final field;
       //   C([this.field]);
       // }
       // Do not forget to rename them as well.
       FunctionElement constructorFunction = constructor;
       Link<Element> optionalParameters =
@@ skipping 236 matching lines @@
 
   visitBlock(Block node) {
     for (Node statement in node.statements.nodes) {
       if (statement is VariableDefinitions) {
         makeVarDeclarationTypePlaceholder(statement);
       }
     }
     node.visitChildren(this);
   }
 }