js/src/tests/js1_8_5/regress/regress-554955-1.js

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0 2 /*
michael@0 3 * Any copyright is dedicated to the Public Domain.
michael@0 4 * http://creativecommons.org/licenses/publicdomain/
michael@0 5 */
michael@0 6
michael@0 7 function f(s) {
michael@0 8 eval(s);
michael@0 9 return function(a) {
michael@0 10 var d;
michael@0 11 let (c = 3) {
michael@0 12 d = function() { a; }; // force Block object to be cloned
michael@0 13 with({}) {}; // repel JägerMonkey
michael@0 14 return b; // lookup occurs in scope of Block
michael@0 15 }
michael@0 16 };
michael@0 17 }
michael@0 18
michael@0 19 var b = 1;
michael@0 20 var g1 = f("");
michael@0 21 var g2 = f("var b = 2;");
michael@0 22
michael@0 23 /* Call the lambda once, caching a reference to the global b. */
michael@0 24 g1(0);
michael@0 25
michael@0 26 /*
michael@0 27 * If this call sees the above cache entry, then it will erroneously use the
michael@0 28 * global b.
michael@0 29 */
michael@0 30 assertEq(g2(0), 2);
michael@0 31
michael@0 32 reportCompare(true, true);

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