Don't call into JS from within stack trace generation

src/objects.cc

 // Copyright 2015 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/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 12804 matching lines @@
   for (int pos = 0; pos < len; pos++) {
     if (pos == code_pos) break;
     if (source_string->Get(pos) == '\n') line++;
   }
   return line;
 }
 
 
 Handle<Object> Script::GetNameOrSourceURL(Handle<Script> script) {
   Isolate* isolate = script->GetIsolate();
-  Handle<String> name_or_source_url_key =
-      isolate->factory()->InternalizeOneByteString(
-          STATIC_CHAR_VECTOR("nameOrSourceURL"));
-  Handle<JSObject> script_wrapper = Script::GetWrapper(script);
-  Handle<Object> property =
-      JSReceiver::GetProperty(script_wrapper, name_or_source_url_key)
-          .ToHandleChecked();
-  DCHECK(property->IsJSFunction());
-  Handle<Object> result;
-  // Do not check against pending exception, since this function may be called
-  // when an exception has already been pending.
-  if (!Execution::TryCall(isolate, property, script_wrapper, 0, NULL)
-           .ToHandle(&result)) {
-    return isolate->factory()->undefined_value();
+
+  // Keep in sync with ScriptNameOrSourceURL in messages.js.
+
+  if (!script->source_url()->IsUndefined(isolate)) {
+    return handle(script->source_url(), isolate);
   }
-  return result;
+  return handle(script->name(), isolate);
 }
 
 
 Handle<JSObject> Script::GetWrapper(Handle<Script> script) {
   Isolate* isolate = script->GetIsolate();
   if (!script->wrapper()->IsUndefined(isolate)) {
     DCHECK(script->wrapper()->IsWeakCell());
     Handle<WeakCell> cell(WeakCell::cast(script->wrapper()));
     if (!cell->cleared()) {
       // Return a handle for the existing script wrapper from the cache.
@@ skipping 6084 matching lines @@
 
   Object* data_obj =
       constructor->shared()->get_api_func_data()->access_check_info();
   if (data_obj->IsUndefined(isolate)) return nullptr;
 
   return AccessCheckInfo::cast(data_obj);
 }
 
 }  // namespace internal
 }  // namespace v8