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 function testArrayInWithIndexedProto()

 {

     Array.prototype[0] = "Got me";

     var zeroPresent, zeroPresent2;

     // Need to go to 18 because in the failure mode this is

     // testing we have various side-exits in there due to interp and

     // tracer not agreeing that confuse the issue and cause us to not

     // hit the bad case within 9 iterations.

     for (var j = 0; j < 18; ++j) {

 	zeroPresent = 0 in [];

     }

     var arr = [1, 2];

     delete arr[0];

     for (var j = 0; j < 18; ++j) {

 	zeroPresent2 = 0 in arr;

     }

     return [zeroPresent, zeroPresent2];

 }

 var [ret, ret2] = testArrayInWithIndexedProto();

 assertEq(ret, true);

 assertEq(ret2, true);