michael@0: function testThrowingObjectEqUndefined()
michael@0: {
michael@0:   try
michael@0:   {
michael@0:     var obj = { toString: function() { throw 0; } };
michael@0:     for (var i = 0; i < 5; i++)
michael@0:       "" + (obj == undefined);
michael@0:     return i === 5;
michael@0:   }
michael@0:   catch (e)
michael@0:   {
michael@0:     return "" + e;
michael@0:   }
michael@0: }
michael@0: assertEq(testThrowingObjectEqUndefined(), true);