Prevent conflict between parameter names and local function names.

pkg/analyzer/test/generated/compile_time_error_code_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.compile_time_error_code_test;
 
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/parser.dart' show ParserErrorCode;
 import 'package:analyzer/src/generated/engine.dart';
@@ skipping 1173 matching lines @@
   m() {
     int a;
     int a;
   }
 }''');
     resolve(source);
     assertErrors(source, [CompileTimeErrorCode.DUPLICATE_DEFINITION]);
     verify([source]);
   }
 
-  void test_duplicateDefinition_parameterWithFunctionName_local() {
-    Source source = addSource(r'''
-main() {
-  f(f) {}
-}''');
-    resolve(source);
-    assertErrors(source, [CompileTimeErrorCode.DUPLICATE_DEFINITION]);
-    verify([source]);
-  }
-
-  void test_duplicateDefinition_parameterWithFunctionName_topLevel() {
-    Source source = addSource(r'''
-main() {
-  f(f) {}
-}''');
-    resolve(source);
-    assertErrors(source, [CompileTimeErrorCode.DUPLICATE_DEFINITION]);
-    verify([source]);
-  }
-
   void test_duplicateDefinitionInheritance_instanceGetter_staticGetter() {
     Source source = addSource(r'''
 class A {
   int get x => 0;
 }
 class B extends A {
   static int get x => 0;
 }''');
     resolve(source);
     assertErrors(source, [CompileTimeErrorCode.DUPLICATE_DEFINITION_INHERITANCE]);
@@ skipping 3553 matching lines @@
   void _check_wrongNumberOfParametersForOperator1(String name) {
     _check_wrongNumberOfParametersForOperator(name, "");
     _check_wrongNumberOfParametersForOperator(name, "a, b");
   }
 }
 
 main() {
   _ut.groupSep = ' | ';
   runReflectiveTests(CompileTimeErrorCodeTest);
 }