jdk8-mips64-public/nashorn: test/script/basic/JDK-8044750.js@1df40fe54cd6 (annotated)

test/script/basic/JDK-8044750.js@1df40fe54cd6 (annotated)

test/script/basic/JDK-8044750.js

Tue, 21 Mar 2017 13:41:57 -0700

author: asaha
date: Tue, 21 Mar 2017 13:41:57 -0700
changeset 2160: 1df40fe54cd6
parent 1541: e4a553f79ebd
permissions: -rw-r--r--

Merge

 /*
  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 /**
  * JDK-8044750: megamorphic getter for scope objects does not call __noSuchProperty__ hook
  *
  * @test
  * @fork
  * @option -Dnashorn.unstable.relink.threshold=16
  * @run
  */
 __noSuchProperty__ = function(name) {
     return 1;
 }
 function func(obj) {
     with(obj) {
         // this "foo" getter site becomes megamorphic
         // due to different 'with' scope objects.
         foo;
     }
 }
 var LIMIT = 20; // should be more than megamorphic threshold set via @option
 for (var i = 0; i < LIMIT; i++) {
     var obj = {};
     obj.foo = i;
     obj[i] = i;
     func(obj);
 }
 // pass a 'with' scope object that does not have 'foo'.
 // callsite inside func should see __noSuchProperty__
 // hook on global scope object.
 func({});
 function checkFoo() {
     with({}) {
         try {
             foo;
             return true;
         } catch (e) {
             return false;
         }
     }
 }
 var oldNoSuchProperty = this.__noSuchProperty__;
 delete this.__noSuchProperty__;
 // keep deleting/restorting __noSuchProperty__ alternatively
 // to make "foo" access in checkFoo function megamorphic!
 for (var i = 0; i < LIMIT; i++) {
     // no __noSuchProperty__ and 'with' scope object has no 'foo'
     delete __noSuchProperty__;
     Assert.assertFalse(checkFoo(), "Expected false in iteration " + i);
     // __noSuchProperty__ is exists but 'with' scope object has no 'foo'
     this.__noSuchProperty__ = oldNoSuchProperty;
     Assert.assertTrue(checkFoo(), "Expected true in iteration " + i);
 }