Store FunctionType(s) of local functions by value.

pkg/analyzer/lib/src/summary/resynthesize.dart

 // Copyright (c) 2015, 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 summary_resynthesizer;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_ast_factory.dart';
@@ skipping 1637 matching lines @@
         return DynamicTypeImpl.instance;
       }
     }
     if (type.paramReference != 0) {
       return context.typeParameterContext
           .getTypeParameterType(type.paramReference);
     } else if (type.entityKind == EntityRefKind.genericFunctionType) {
       GenericFunctionTypeElement element =
           new GenericFunctionTypeElementImpl.forSerialized(context, type);
       return element.type;
-    } else if (type.syntheticReturnType != null) {
+    } else if (type.syntheticReturnType != null && type.reference == 0) {
       FunctionElementImpl element =
           new FunctionElementImpl_forLUB(context, type);
       return element.type;
     } else {
       DartType getTypeArgument(int i) {
         if (i < type.typeArguments.length) {
           return buildType(context, type.typeArguments[i],
               declaredType: declaredType);
         } else {
           return DynamicTypeImpl.instance;
@@ skipping 302 matching lines @@
   static String _getElementIdentifier(String name, ReferenceKind kind) {
     if (kind == ReferenceKind.topLevelPropertyAccessor ||
         kind == ReferenceKind.propertyAccessor) {
       if (!name.endsWith('=')) {
         return name + '?';
       }
     }
     return name;
   }
 }