var str1 = String.fromCharCode(365, 115, 29, 20, 15, 155, 81);
str3 = str1.padEnd(0x7FFFFFFC, '123');

var exception;
try {
    JSON.stringify(str3);
} catch (e) {
    exception = e;
}

if (exception != "RangeError: Out of memory")
    throw "FAILED";