Type parameters and class members must not conflict

runtime/vm/parser.cc

Index: runtime/vm/parser.cc
diff --git a/runtime/vm/parser.cc b/runtime/vm/parser.cc
index 2be86b948d5e585a3bea3c26cf6c4de549078218..9cd04a3f032ec97746e0053492738ae93d5cc91c 100644
--- a/runtime/vm/parser.cc
+++ b/runtime/vm/parser.cc
@@ -4677,6 +4677,11 @@ void Parser::ParseClassDefinition(const Class& cls) {
   }
   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