Make the 'name' property on error prototypes read-only and dont-delete...

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
===================================================================
--- test/cctest/test-api.cc	(revision 6298)
+++ test/cctest/test-api.cc	(working copy)
@@ -2288,6 +2288,30 @@
 }
 
 
+static void check_reference_error_message(
+    v8::Handle<v8::Message> message,
+    v8::Handle<v8::Value> data) {
+  const char* reference_error = "Uncaught ReferenceError: asdf is not defined";
+  CHECK(message->Get()->Equals(v8_str(reference_error)));
+}
+
+
+// Test that overwritten toString methods are not invoked on uncaught
+// exception formatting. However, they are invoked when performing
+// normal error string conversions.
+THREADED_TEST(APIThrowMessageOverwrittenToString) {
+  v8::HandleScope scope;
+  v8::V8::AddMessageListener(check_reference_error_message);
+  LocalContext context;
+  CompileRun("ReferenceError.prototype.toString ="
+             "  function() { return 'Whoops' }");
+  CompileRun("asdf;");
+  v8::Handle<Value> string = CompileRun("try { asdf; } catch(e) { e + ''; }");
+  CHECK(string->Equals(v8_str("Whoops")));
+  v8::V8::RemoveMessageListeners(check_message);
+}
+
+
 static void receive_message(v8::Handle<v8::Message> message,
                             v8::Handle<v8::Value> data) {
   message->Get();