Please ignore this thread and see the following one instead.
https://www.postgresql.org/message-id/20180215.201107.78574525.horiguchi.kyotaro@lab.ntt.co.jp
At Thu, 15 Feb 2018 20:07:03 +0900 (Tokyo Standard Time), Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote in <20180215(dot)200703(dot)242189033(dot)horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
> As in another mail just before, spin.c seems a bit strange
> (without acutual harm).
regards.
--
Kyotaro Horiguchi
NTT Open Source Software Center