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 var g = newGlobal();

 var dbg = Debugger(g);

 dbg.onDebuggerStatement = function (frame) {

     try {

         frame.arguments[0].deleteProperty("x");

     } catch (exc) {

         assertEq(exc instanceof ReferenceError, true);

         assertEq(exc.message, "diaf");

         assertEq(exc.fileName, "fail");

         assertEq(exc.lineNumber, 4);

         assertEq(exc.columnNumber, 20);

         return;

     }

     throw new Error("deleteProperty should throw");

 };

 g.evaluate("function h(obj) { debugger; } \n" +

            "h(new Proxy({}, \n" +

            "            { deleteProperty: function () { \n" +

            "                var e = new ReferenceError('diaf', 'fail'); \n" +

            "                throw e; \n" +

            "              } \n" +

            "            }));");