Allow GetScriptNameOrSourceURL to be called with exception pending.

src/handles.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 381 matching lines @@
   Isolate* isolate = script->GetIsolate();
   Handle<String> name_or_source_url_key =
       isolate->factory()->InternalizeOneByteString(
           STATIC_ASCII_VECTOR("nameOrSourceURL"));
   Handle<JSValue> script_wrapper = GetScriptWrapper(script);
   Handle<Object> property = Object::GetProperty(
       script_wrapper, name_or_source_url_key).ToHandleChecked();
   ASSERT(property->IsJSFunction());
   Handle<JSFunction> method = Handle<JSFunction>::cast(property);
   Handle<Object> result;
-  ASSIGN_RETURN_ON_EXCEPTION_VALUE(
-      isolate, result,
-      Execution::TryCall(method, script_wrapper, 0, NULL),
-      isolate->factory()->undefined_value());
+  // Do not check against pending exception, since this function may be called
+  // when an exception has already been pending.
+  if (!Execution::TryCall(method, script_wrapper, 0, NULL).ToHandle(&result)) {
+    return isolate->factory()->undefined_value();
+  }
   return result;
 }
 
 
 static bool ContainsOnlyValidKeys(Handle<FixedArray> array) {
   int len = array->length();
   for (int i = 0; i < len; i++) {
     Object* e = array->get(i);
     if (!(e->IsString() || e->IsNumber())) return false;
   }
@@ skipping 278 matching lines @@
                                    Handle<Code> code) {
   heap->EnsureWeakObjectToCodeTable();
   Handle<DependentCode> dep(heap->LookupWeakObjectToCodeDependency(*object));
   dep = DependentCode::Insert(dep, DependentCode::kWeakCodeGroup, code);
   CALL_HEAP_FUNCTION_VOID(heap->isolate(),
                           heap->AddWeakObjectToCodeDependency(*object, *dep));
 }
 
 
 } }  // namespace v8::internal