This uses /proc/self/mem to write to two unwritable memory pages. The first is a read-only page that the code itself maps. The second is a code page belonging to libc itself (the getchar function).
体感上，Ring 更像“严苛的资深 Reviewer”，Tbox 更像“把结论写成可传播资产的编辑部”。，这一点在WhatsApp Web 網頁版登入中也有详细论述
，详情可参考谷歌
Москвичей призвали не ждать «дружную» весну14:57。关于这个话题，wps提供了深入分析
pub fn gcd(a: int, b: int) - int {
# List subscriptions