Dear Peter,
> Yes, this was previously reported [0] but nothing was done about it. We
> just need to find some place to "do nothing" in bootstrap mode to avoid
> the crash. Your patch seems ok to me for that.
Thanks for giving the old discussion. I couldn't find it. According to the post [1],
there are no similar failures for boolean GUCs.
From this perspective, we do not have to do some fundamental ways to fix this bug,
i.e., my patch is enough.
[1]: https://www.postgresql.org/message-id/0307b599-9528-643d-934c-a7e76d376e94%40enterprisedb.com
Best regards,
Hayato Kuroda
FUJITSU LIMITED