The latter is the more interesting test — it writes a 0xcc byte (the x86-64 software breakpoint instruction) which will cause the kernel to deliver a SIGTRAP to our process if executed. This is literally changing the executable code of libc. So the next time we call getchar, if we get a SIGTRAP, we know that the write has succeeded.
22:22, 9 марта 2026Спорт
。新收录的资料是该领域的重要参考
or type the name of the author we are interested in and press return to
The naming is meant to symbolize simplicity and pragmatic silliness: I just