Date: Tue, 23 Apr 2019 11:15:05 -0400
From: "Valdis Kl=?utf-8?Q?=c4=93?=tnieks" <valdis.kletni...@vt.edu>
Message-ID: <4344.1556032505@turing-police>
| The *real* WTF there is that the code doesn't actually know if fd 3 is
| known to be open on a file that should, or if it's just a stray leaked fd.
I don't know why fd 3 was wanted to be a dup of stdin, but aside from
that oddity, there's notthing remarkable about the code (no WTF), the
test is just avoiding a (pointless) dup2(3,3).
Whatever fd 3 was before executing this code, it is closed after it
unless it happened to be what is wanted on stdin.
kre
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