tor-browser

The Tor Browser
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reentrant-RegExp-creation-and-gc-during-new-RegExp-pattern-ToString.js (1188B)

      1 // |reftest| skip-if(!xulRuntime.shell) -- needs gc (newGlobal/evaluate are shimmed)
      2 /*
      3 * Any copyright is dedicated to the Public Domain.
      4 * http://creativecommons.org/licenses/publicdomain/
      5 */
      6 
      7 var gTestfile =
      8  "reentrant-RegExp-creation-and-gc-during-new-RegExp-pattern-ToString.js";
      9 //-----------------------------------------------------------------------------
     10 var BUGNUMBER = 1253099;
     11 var summary =
     12  "Don't assert when, in |new RegExp(pat)|, stringifying |pat| creates " +
     13  "another RegExp and then performs a GC";
     14 
     15 print(BUGNUMBER + ": " + summary);
     16 
     17 /**************
     18 * BEGIN TEST *
     19 **************/
     20 
     21 // The fresh global object is required to ensure that the outer |new RegExp|
     22 // is the first RegExp created in the global (other than RegExp.prototype).
     23 newGlobal().evaluate(`
     24 var createsRegExpAndCallsGCWhenStringified =
     25  {
     26    toString: function() {
     27      new RegExp("a");
     28      gc();
     29      return "q";
     30    }
     31  };
     32 
     33 assertEq(new RegExp(createsRegExpAndCallsGCWhenStringified).source, "q");
     34 `);
     35 
     36 /******************************************************************************/
     37 
     38 if (typeof reportCompare === "function")
     39  reportCompare(true, true);
     40 
     41 print("Tests complete");