// obj.getOwnPropertySymbols() works when obj's referent is itself a cross-compartment wrapper. var g = newGlobal({newCompartment: true}); var dbg = Debugger(); var gobj = dbg.addDebuggee(g); g.p = {xyzzy: 8}; // makes a cross-compartment wrapper var sym = Symbol("plugh"); g.p[sym] = 9; var wp = gobj.getOwnPropertyDescriptor("p").value; var names = wp.getOwnPropertySymbols(); assertEq(names.length, 1); assertEq(names[0], sym);