Type parameters and class members must not conflict

runtime/vm/parser.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 4659 matching lines @@
   while (CurrentToken() != Token::kLBRACE) {
     ConsumeToken();
   }
   ExpectToken(Token::kLBRACE);
   while (CurrentToken() != Token::kRBRACE) {
     TokenPosition metadata_pos = SkipMetadata();
     ParseClassMemberDefinition(&members, metadata_pos);
   }
   ExpectToken(Token::kRBRACE);
 
+  if (cls.LookupTypeParameter(class_name) != TypeParameter::null()) {
+    ReportError(class_pos,
+                "class name conflicts with type parameter '%s'",
+                class_name.ToCString());
+  }
   CheckConstructors(&members);
 
   // Need to compute this here since MakeArray() will clear the
   // functions array in members.
   const bool need_implicit_constructor =
       !members.has_constructor() && !cls.is_patch();
 
   cls.AddFields(members.fields());
 
   // Creating a new array for functions marks the class as parsed.
@@ skipping 9935 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME