JezK
Edit File: bug-941049.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // This test fails because we copy the arguments array on indirect // access function g(f) { assertEquals(100, f.arguments = 100); // read-only assertEquals(3, f.arguments.length); assertEquals(1, f.arguments[0]); assertEquals(2, f.arguments[1]); assertEquals(3, f.arguments[2]); f.arguments[0] = 999; f.arguments.extra = 'kallevip'; } function h(f) { assertEquals('kallevip', f.arguments.extra); return f.arguments; } // Test function with a materialized arguments array. function f0() { g(f0); var result = h(f0); var a = arguments; assertEquals(999, a[0]); return result; } // Test function without a materialized arguments array. function f1(x) { g(f1); var result = h(f1); assertEquals(999, x); return result; } function test(f) { assertTrue(null === f.arguments); var args = f(1,2,3); assertTrue(null === f.arguments); assertEquals(3, args.length); assertEquals(999, args[0]); assertEquals(2, args[1]); assertEquals(3, args[2]); assertEquals('kallevip', args.extra); } test(f0); test(f1); function w() { return q.arguments; } function q(x, y) { x = 2; var result = w(); y = 3; return result; } var a = q(0, 1); // x is set locally *before* the last use of arguments before the // activation of q is popped from the stack. assertEquals(2, a[0]); // y is set locally *after* the last use of arguments before the // activation of q is popped from the stack. assertEquals(1, a[1]);