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
