var BUGNUMBER = 0; var summary = "RegExp.prototype.split should reflect the change to Object.prototype.flags."; print(BUGNUMBER + ": " + summary); Object.defineProperty(Object.prototype, "flags", Object.getOwnPropertyDescriptor(RegExp.prototype, "flags")); delete RegExp.prototype.flags; let re = /a/i; let a = re[Symbol.split]("1a2A3a4A5"); assertDeepEq(a, ["1", "2", "3", "4", "5"]); delete Object.prototype.flags; Object.prototype.flags = ""; a = re[Symbol.split]("1a2A3a4A5"); assertDeepEq(a, ["1", "2A3", "4A5"]); if (typeof reportCompare === "function") reportCompare(true, true);