Neat idea, we noticed that PPID still referenced it as well--however if the parent exits before the child uses the FD then it may not be consistent. $^F or fcntl for CLOEXEC is the solution here.

In reply to Re^2: Leaking a file descriptor into a child to use with /proc/self/fd/3 by ewheeler
in thread Leaking a file descriptor into a child to use with /proc/self/fd/3 by ewheeler

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