The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/ecma_5/String/replace-math.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,38 @@
     1.4 +/*
     1.5 + * Any copyright is dedicated to the Public Domain.
     1.6 + * http://creativecommons.org/licenses/publicdomain/
     1.7 + */
     1.8 +
     1.9 +var BUGNUMBER = 805121;
    1.10 +var summary = "Be more careful with string math to avoid wrong results";
    1.11 +
    1.12 +print(BUGNUMBER + ": " + summary);
    1.13 +
    1.14 +/******************************************************************************/
    1.15 +
    1.16 +function puff(x, n)
    1.17 +{
    1.18 +  while(x.length < n)
    1.19 +    x += x;
    1.20 +  return x.substring(0, n);
    1.21 +}
    1.22 +
    1.23 +var x = puff("1", 1 << 20);
    1.24 +var rep = puff("$1", 1 << 16);
    1.25 +
    1.26 +try
    1.27 +{
    1.28 +  var y = x.replace(/(.+)/g, rep);
    1.29 +  assertEq(y.length, Math.pow(2, 36));
    1.30 +}
    1.31 +catch (e)
    1.32 +{
    1.33 +  // OOM also acceptable
    1.34 +}
    1.35 +
    1.36 +/******************************************************************************/
    1.37 +
    1.38 +if (typeof reportCompare === "function")
    1.39 +  reportCompare(true, true);
    1.40 +
    1.41 +print("Tests complete");