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Re: ptrace improvement: PTRACE_O_INHERIT
On 02/15, Roland McGrath wrote:
> > GDB also never trusts the found threads list, it does tkill (TID, 0) to verify
> > if any TID is still alive.
> Btw, it should use tgkill to avoid false-positive corner cases of PID reuse.
Even tgkill() can't 100% protect against PID reuse, but I agree it is better.
But I failed to understand why gdb needs tkill/tgkill currently. A thread
can't go away silently? This also means its pid can't be reused.