Add remaining @@toStringTag symbols to builtins

src/runtime/runtime-function.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/arguments.h"
 #include "src/compiler.h"
 #include "src/deoptimizer.h"
@@ skipping 49 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_FunctionGetName) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
 
   CONVERT_ARG_CHECKED(JSFunction, f, 0);
   return f->shared()->name();
 }
 
 
+static Handle<String> NameToFunctionName(Handle<Name> name) {
+  Handle<String> stringName(name->GetHeap()->empty_string());
+
+  // TODO(caitp): Follow proper rules in section 9.2.11 (SetFunctionName)
+  if (name->IsSymbol()) {
+    Handle<Object> description(Handle<Symbol>::cast(name)->name(),
+                               name->GetIsolate());
+    if (description->IsString()) {
+      stringName = Handle<String>::cast(description);
+    }
+  } else {
+    stringName = Handle<String>::cast(name);
+  }
+
+  return stringName;
+}
+
+
 RUNTIME_FUNCTION(Runtime_FunctionSetName) {
-  SealHandleScope shs(isolate);
+  HandleScope scope(isolate);
   DCHECK(args.length() == 2);
 
-  CONVERT_ARG_CHECKED(JSFunction, f, 0);
-  CONVERT_ARG_CHECKED(String, name, 1);
-  f->shared()->set_name(name);
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, f, 0);
+  CONVERT_ARG_HANDLE_CHECKED(Name, name, 1);
+
+  f->shared()->set_name(*NameToFunctionName(name));
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_FunctionNameShouldPrintAsAnonymous) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(JSFunction, f, 0);
   return isolate->heap()->ToBoolean(
       f->shared()->name_should_print_as_anonymous());
@@ skipping 510 matching lines @@
 
 
 RUNTIME_FUNCTION(RuntimeReference_IsFunction) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(Object, obj, 0);
   return isolate->heap()->ToBoolean(obj->IsJSFunction());
 }
 }
 }  // namespace v8::internal