1 /* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * JDK-8136694: Megemorphic scope access does not throw ReferenceError when property is missing 26 * 27 * @test 28 * @option --unstable-relink-threshold=16 29 * @run 30 */ 31 32 function checkFoo() { 33 try { 34 // The 'foo' access becomes megamorphic 35 foo; 36 return true; 37 } catch (e) { 38 return false; 39 } 40 } 41 42 43 // Similar check for 'with' blocks as well. 44 function checkFooInWith() { 45 with({}) { 46 try { 47 // The 'foo' access becomes megamorphic 48 foo; 49 return true; 50 } catch (e) { 51 return false; 52 } 53 } 54 } 55 56 function loop(checker) { 57 // LIMIT has to be more than the megamorphic threashold 58 // set via @option in this test header! 59 var LIMIT = 20; 60 for (var i = 0; i < LIMIT; i++) { 61 // make sure global has no "foo" 62 delete foo; 63 Assert.assertFalse(checker(), "Expected false in interation " + i); 64 65 // now add 'foo' in global 66 foo = 44; 67 Assert.assertTrue(checker(), "Expected true in interation " + i); 68 } 69 } 70 71 72 loop(checkFoo); 73 loop(checkFooInWith);