The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/js1_8_5/regress/regress-554955-1.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,32 @@
     1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
     1.5 +/*
     1.6 + * Any copyright is dedicated to the Public Domain.
     1.7 + * http://creativecommons.org/licenses/publicdomain/
     1.8 + */
     1.9 +
    1.10 +function f(s) {
    1.11 +  eval(s);
    1.12 +  return function(a) {
    1.13 +    var d;
    1.14 +    let (c = 3) {
    1.15 +      d = function() { a; }; // force Block object to be cloned
    1.16 +      with({}) {}; // repel JägerMonkey
    1.17 +      return b; // lookup occurs in scope of Block
    1.18 +    }
    1.19 +  };
    1.20 +}
    1.21 +
    1.22 +var b = 1;
    1.23 +var g1 = f("");
    1.24 +var g2 = f("var b = 2;");
    1.25 +
    1.26 +/* Call the lambda once, caching a reference to the global b. */
    1.27 +g1(0);
    1.28 +
    1.29 +/* 
    1.30 + * If this call sees the above cache entry, then it will erroneously use the
    1.31 + * global b.
    1.32 + */
    1.33 +assertEq(g2(0), 2);
    1.34 +
    1.35 +reportCompare(true, true);