1b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch// Copyright 2013 the V8 project authors. All rights reserved. 21e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// Redistribution and use in source and binary forms, with or without 31e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// modification, are permitted provided that the following conditions are 41e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// met: 51e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// 61e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// * Redistributions of source code must retain the above copyright 71e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// notice, this list of conditions and the following disclaimer. 81e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// * Redistributions in binary form must reproduce the above 91e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// copyright notice, this list of conditions and the following 101e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// disclaimer in the documentation and/or other materials provided 111e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// with the distribution. 121e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// * Neither the name of Google Inc. nor the names of its 131e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// contributors may be used to endorse or promote products derived 141e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// from this software without specific prior written permission. 151e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// 161e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 171e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 181e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 191e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 201e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 211e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 221e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 231e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 241e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 251e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 261e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 271e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 283fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch// Flags: --allow-natives-syntax 291e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block 30b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochfunction ar() { 31b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var r = undefined; 32b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var f = 1; 33b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch while (f--) { 34b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch r = (typeof r === 'undefined') ? 0.1 : r; 35b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch }; 36b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return (r - r); 37b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch} 38b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch 39b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertEquals(0, ar()); 40b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertEquals(0, ar()); 41b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch%OptimizeFunctionOnNextCall(ar); 42b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertEquals(0, ar()); 433fb3ca8c7ca439d408449a395897395c0faae8d1Ben Murdoch 44b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdochfunction ar2() { 45b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var r = undefined; 46b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch var f = 1; 47b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch while (f--) { 48b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch r = r === undefined ? 0.1 : r; 49b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch }; 50b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch return (r - r); 511e0659c275bb392c045087af4f6b0d7565cb3d77Steve Block} 52e0cee9b3ed82e2391fd85d118aeaa4ea361c687dBen Murdoch 53b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertEquals(0, ar2()); 54b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertEquals(0, ar2()); 55b8a8cc1952d61a2f3a2568848933943a543b5d3eBen Murdoch%OptimizeFunctionOnNextCall(ar2); 56b8a8cc1952d61a2f3a2568848933943a543b5d3eBen MurdochassertEquals(0, ar2()); 57