Issue 21842. Fix for incremental resolution of function expressions in top-level variables.

pkg/analyzer/test/generated/incremental_resolver_test.dart

 // Copyright (c) 2014, 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 engine.incremental_resolver_test;
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
@@ skipping 2564 matching lines @@
 }
 ''');
     _updateAndValidate(r'''
 main() {
   // edited comment text
   print(0);
 }
 ''');
   }
 
+  void test_endOfLineComment_localFunction_inTopLevelVariable() {
+    _resolveUnit(r'''
+typedef int Binary(one, two, three);
+
+int Global = f((a, b, c) {
+  return 0; // Some comment
+});
+''');
+    _updateAndValidate(r'''
+typedef int Binary(one, two, three);
+
+int Global = f((a, b, c) {
+  return 0; // Some  comment
+});
+''');
+  }
+
   void test_endOfLineComment_remove() {
     _resolveUnit(r'''
 main() {
   // some comment
   print(0);
 }
 ''');
     _updateAndValidate(r'''
 main() {
   print(0);
@@ skipping 1578 matching lines @@
     _visitList(node.metadata, other.metadata);
     _visitNode(node.identifier, other.identifier);
   }
 
   static void assertSameResolution(CompilationUnit actual,
       CompilationUnit expected) {
     _SameResolutionValidator validator = new _SameResolutionValidator(expected);
     actual.accept(validator);
   }
 }