Fix parsing of generic local functions (issue 25769)

pkg/analyzer/lib/src/generated/parser.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 analyzer.src.generated.parser;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 7031 matching lines @@
         return _parseWhileStatement();
       } else if (keyword == Keyword.VAR || keyword == Keyword.FINAL) {
         return _parseVariableDeclarationStatementAfterMetadata(
             commentAndMetadata);
       } else if (keyword == Keyword.VOID) {
         TypeName returnType = parseReturnType();
         if (_matchesIdentifier() &&
             _peek().matchesAny([
               TokenType.OPEN_PAREN,
               TokenType.OPEN_CURLY_BRACKET,
-              TokenType.FUNCTION
+              TokenType.FUNCTION,
+              TokenType.LT
             ])) {
           return _parseFunctionDeclarationStatementAfterReturnType(
               commentAndMetadata, returnType);
         } else {
           //
           // We have found an error of some kind. Try to recover.
           //
           if (_matchesIdentifier()) {
             if (_peek().matchesAny(
                 [TokenType.EQ, TokenType.COMMA, TokenType.SEMICOLON])) {
@@ skipping 4295 matching lines @@
   }
 
   /**
    * Copy resolution data from the [fromNode] to the [toNode].
    */
   static void copyResolutionData(AstNode fromNode, AstNode toNode) {
     ResolutionCopier copier = new ResolutionCopier();
     copier._isEqualNodes(fromNode, toNode);
   }
 }