1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description( 25 "Tests that ArrayPop is known to the DFG to be a side effect." 26 ); 27 28 function foo(a, b) { 29 var result = a.f; 30 result += b.pop(); 31 result += a.g; 32 return result; 33 } 34 35 var ouches = 0; 36 for (var i = 0; i < 200; ++i) { 37 var a = {f:1, g:2}; 38 var b = []; 39 var expected; 40 if (i < 150) { 41 // Ensure that we always transition the array's structure to one that indicates 42 // that we have array storage. 43 b.__defineGetter__("0", function() { 44 testFailed("Should never get here"); 45 }); 46 b.length = 0; 47 b[0] = 42; 48 expected = "45"; 49 } else { 50 b.__defineGetter__("0", function() { 51 debug("Ouch!"); 52 ouches++; 53 delete a.g; 54 a.h = 43; 55 return 5; 56 }); 57 expected = "0/0"; 58 } 59 shouldBe("foo(a, b)", expected); 60 } 61 62 shouldBe("ouches", "50"); 63
