Re: Function scan FDW pushdown

From: Anthonin Bonnefoy <anthonin(dot)bonnefoy(at)datadoghq(dot)com>
To: Alexander Korotkov <aekorotkov(at)gmail(dot)com>
Cc: Alexander Pyhalov <a(dot)pyhalov(at)postgrespro(dot)ru>, solaimurugan vellaipandiyan <drsolaimurugan(dot)v(at)gmail(dot)com>, Álvaro Herrera <alvherre(at)kurilemu(dot)de>, g(dot)kashkin(at)postgrespro(dot)ru, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Function scan FDW pushdown
Date: 2026-08-19 14:15:40
Message-ID: CAO6_XqrGH2NRe0oFx_00nLXra1UZezd3jbS9pgoRhZtgzHD9gg@mail.gmail.com
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Hi,

It seems like this patch introduced a compilation warning[0]:

postgres_fdw.c: In function 'postgresExplainForeignScan':
postgres_fdw.c:3221:36: error: 'relname' may be used uninitialized
[-Werror=maybe-uninitialized]
3221 | if (relname == NULL ||
strcmp(refname, relname) != 0)
| ^
postgres_fdw.c:3132:45: note: 'relname' was declared here
3132 | char *relname;
| ^~~~~~~

Setting relname to NULL during declaration fixes the warning and seems
to be the expected behavior?

[0]: https://github.com/postgres/postgres/actions/runs/32244563943/job/96042498375

Regards,
Anthonin Bonnefoy

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v1-0001-Fix-compilation-warning-after-0ee83dd4.patch application/octet-stream 795 bytes

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