Check if enclosingElement is null.

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 operator[](Node node);
   Selector getSelector(Send send);
   Selector getGetterSelectorInComplexSendSet(SendSet node);
@@ skipping 1619 matching lines @@
       // When the element is a field, we are actually resolving its
       // initial value, which should not have access to instance
       // fields.
       inInstanceContext = (element.isInstanceMember() && !element.isField())
           || element.isGenerativeConstructor(),
       this.currentClass = element.isMember() ? element.getEnclosingClass()
                                              : null,
       this.statementScope = new StatementScope(),
       typeResolver = new TypeResolver(compiler),
       scope = element.buildScope(),
       inCheckContext = compiler.enableTypeAssertions &&

[ngeoffray, 2013/03/01 09:49:18]

Comment?

[karlklose, 2013/03/01 10:21:44]

Created a CL.

-          !element.enclosingElement.isTypedef(),
+          (element.enclosingElement == null ||
+           !element.enclosingElement.isTypedef()),

[ngeoffray, 2013/03/01 09:49:18]

So we're creating a ResolverVisitor for things contained in a Typedef? What are
those? Parameters, type parameters? This looks kind of odd.

[ahe, 2013/03/01 09:54:36]

I'm also confused about this. This fix does not look right to me.

[karlklose, 2013/03/01 10:21:44]

When the signature resolver asks the VariableListElement of the typdef for its
type, the creates a ResolverVisitor to call resolveReturnType.

[ahe, 2013/03/12 08:15:40]

That does not explain why you have an element that does not have an enclosing
element here.

       inCatchBlock = false,
       super(compiler);
 
   ResolutionEnqueuer get world => compiler.enqueuer.resolution;
 
   Element lookup(Node node, SourceString name) {
     Element result = scope.lookup(name);
     if (!Elements.isUnresolved(result)) {
       if (!inInstanceContext && result.isInstanceMember()) {
         compiler.reportErrorCode(
@@ skipping 2147 matching lines @@
     return e;
   }
 
   /// Assumed to be called by [resolveRedirectingFactory].
   Element visitReturn(Return node) {
     Node expression = node.expression;
     return finishConstructorReference(visit(expression),
                                       expression, expression);
   }
 }