1// Copyright 2013 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Flags: --allow-natives-syntax 29 30// Test materialization of an arguments object with unknown argument 31// values in non-strict mode (length has to be zero). 32(function() { 33 var deoptimize = { deopt:true }; 34 var object = {}; 35 36 object.a = function A(x, y, z) { 37 assertSame(0, arguments.length); 38 return this.b(); 39 }; 40 41 object.b = function B() { 42 assertSame(0, arguments.length); 43 deoptimize.deopt; 44 return arguments.length; 45 }; 46 47 assertSame(0, object.a()); 48 assertSame(0, object.a()); 49 %OptimizeFunctionOnNextCall(object.a); 50 assertSame(0, object.a()); 51 delete deoptimize.deopt; 52 assertSame(0, object.a()); 53})(); 54 55 56// Test materialization of an arguments object with unknown argument 57// values in strict mode (length is allowed to exceed stack size). 58(function() { 59 'use strict'; 60 var deoptimize = { deopt:true }; 61 var object = {}; 62 63 object.a = function A(x, y, z) { 64 assertSame(0, arguments.length); 65 return this.b(1, 2, 3, 4, 5, 6, 7, 8); 66 }; 67 68 object.b = function B(a, b, c, d, e, f, g, h) { 69 assertSame(8, arguments.length); 70 deoptimize.deopt; 71 return arguments.length; 72 }; 73 74 assertSame(8, object.a()); 75 assertSame(8, object.a()); 76 %OptimizeFunctionOnNextCall(object.a); 77 assertSame(8, object.a()); 78 delete deoptimize.deopt; 79 assertSame(8, object.a()); 80})(); 81