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 function testBug504520Harder() {

     // test 1024 similar cases

     var vals = [1/0, -1/0, 0, 0/0];

     var ops = ["===", "!==", "==", "!=", "<", ">", "<=", ">="];

     for each (var x in vals) {

         for each (var y in vals) {

             for each (var op in ops) {

                 for each (var z in vals) {

                     // Assume eval is correct. This depends on the global

                     // Infinity property not having been reassigned.

                     var xz = eval(x + op + z);

                     var yz = eval(y + op + z);

                     var arr = [x, x, x, x, x, x, x, x, x, y];

                     assertEq(arr.length > 9, true);

                     var expected = [xz, xz, xz, xz, xz, xz, xz, xz, xz, yz];

                     // ?: looks superfluous but that's what we're testing here

                     var fun = eval(

                         '(function (arr, results) {\n' +

                         '    for (let i = 0; i < arr.length; i++)\n' +

                         '        results.push(arr[i]' + op + z + ' ? "true" : "false");\n' +

                         '});\n');

                     var actual = [];

                     fun(arr, actual);

 		    print(x, y, op, z);

                     assertEq("" + actual, "" + expected);

                 }

             }

         }

     }

 }

 testBug504520Harder();