tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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forEach-selfhosted-behavior.js (907B)

      1 /*
      2 * Any copyright is dedicated to the Public Domain.
      3 * http://creativecommons.org/licenses/publicdomain/
      4 */
      5 
      6 // Don't use .call(...) in the self-hosted Set.prototype.forEach
      7 
      8 var functionCall = Function.prototype.call;
      9 
     10 function throwSyntaxError()
     11 {
     12  throw new SyntaxError("Function.prototype.call incorrectly called");
     13 }
     14 
     15 function lalala() {}
     16 
     17 Function.prototype.call = throwSyntaxError;
     18 
     19 new Set().forEach(throwSyntaxError);
     20 new Set([1]).forEach(lalala);
     21 new Set([{}, 4]).forEach(lalala);
     22 
     23 Function.prototype.call = function() { this.add(3.141592654); };
     24 
     25 new Set().forEach(throwSyntaxError);
     26 new Set(["foo"]).forEach(lalala);
     27 new Set([undefined, NaN]).forEach(lalala);
     28 
     29 var callCount = 0;
     30 Function.prototype.call = function() { callCount++; };
     31 
     32 new Set().forEach(throwSyntaxError);
     33 new Set([new Number]).forEach(lalala);
     34 new Set([true, new Boolean(false)]).forEach(lalala);
     35 
     36 assertEq(callCount, 0);