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help / color / mirror / Atom feedFrom: Bruce Momjian <[email protected]>
To: Tom Lane <[email protected]>
Cc: John Naylor <[email protected]>
Cc: David Rowley <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: Debian 12 gcc warning
Date: Tue, 29 Aug 2023 22:52:06 -0400
Message-ID: <ZO6u1hySX4lBI/[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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<[email protected]>
<[email protected]>
On Tue, Aug 29, 2023 at 10:18:36AM -0400, Tom Lane wrote:
> Bruce Momjian <[email protected]> writes:
> > On Tue, Aug 29, 2023 at 10:26:27AM +0700, John Naylor wrote:
> >> It looks like the former, since I can silence it on gcc 13 / -O1 by doing:
> >> /* keep compiler quiet */
> >> actual_arg_types[0] = InvalidOid;
>
> > Agreed, that fixes it for me too. In fact, assigning to only element 99 or
> > 200 also prevents the warning, and considering the array is defined for
> > 100 elements, the fact is accepts 200 isn't a good thing. Patch attached.
>
> That seems like a pretty clear compiler bug, particularly since it just
> appears in this one version. Rather than contorting our code, I'd
> suggest filing a gcc bug.
I assume I have to create a test case to report this to the gcc team. I
tried to create such a test case on gcc 12 but it doesn't generate the
warning. Attached is my attempt. Any ideas? I assume we can't just
tell them to download our software and compile it.
--
Bruce Momjian <[email protected]> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
Attachments:
[application/zip] test_gcc_12.2.0-O1.zip (6.4K, ../ZO6u1hySX4lBI%[email protected]/2-test_gcc_12.2.0-O1.zip)
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