Issue 28550. Fix for resynthesizing invalid elements as declared types.

pkg/analyzer/test/src/summary/resynthesize_common.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 test.src.serialization.elements_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 4632 matching lines @@
   }
 
   test_type_arguments_implicit() {
     checkLibrary('Map m;');
   }
 
   test_type_dynamic() {
     checkLibrary('dynamic d;');
   }
 
+  test_type_invalid_topLevelVariableElement_asType() {
+    checkLibrary(
+        '''
+class C<T extends V> {}
+typedef V F(V p);
+V f(V p) {}
+V V2 = null;
+int V = 0;
+''',
+        allowErrors: true);
+  }
+
   test_type_invalid_typeParameter_asPrefix() {
     checkLibrary(
         '''
 class C<T> {
   m(T.K p) {}
 }
 ''',
         allowErrors: true);
   }
 
@@ skipping 433 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }