| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgbf(at)twiska(dot)com, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, masao(dot)fujii(at)oss(dot)nttdata(dot)com, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: min_safe_lsn column in pg_replication_slots view |
| Date: | 2020-07-08 23:35:26 |
| Message-ID: | 20200708233526.GA30333@alvherre.pgsql |
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| Lists: | pgsql-hackers |
On 2020-Jul-08, Tom Lane wrote:
> Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> > Anyway the error is pretty strange: only GetWALAvailability is showing a
> > problem, but the size calculation in the view function def is returning
> > a negative number, as expected.
>
> We've previously noted what seem to be compiler optimization bugs on
> both sparc32 and sparc64; the latest thread about that is
> https://www.postgresql.org/message-id/flat/f28f842d-e82b-4e30-a81a-2a1f9fa4a8e1%40www.fastmail.com
>
> This is looking uncomfortably like the same thing.
Ouch. So 12 builds with -O0 but 13 does not? Did we do something to
sequence.c to work around this problem? I cannot find anything.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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