reentrant-RegExp-creation-and-gc-during-new-RegExp-pattern-ToString.js

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// |reftest| skip-if(!xulRuntime.shell) -- needs gc (newGlobal/evaluate are shimmed)

/*

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/

*/

var gTestfile =

  "reentrant-RegExp-creation-and-gc-during-new-RegExp-pattern-ToString.js";

//-----------------------------------------------------------------------------

var BUGNUMBER = 1253099;

var summary =

  "Don't assert when, in |new RegExp(pat)|, stringifying |pat| creates " +

  "another RegExp and then performs a GC";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

// The fresh global object is required to ensure that the outer |new RegExp|

// is the first RegExp created in the global (other than RegExp.prototype).

newGlobal().evaluate(`

var createsRegExpAndCallsGCWhenStringified =

    toString: function() {

      new RegExp("a");

      gc();

      return "q";

};

assertEq(new RegExp(createsRegExpAndCallsGCWhenStringified).source, "q");

`);

/******************************************************************************/

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");