Re: ABI Compliance Checker GSoC Project

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Álvaro Herrera <alvherre(at)kurilemu(dot)de>
Cc: Peter Eisentraut <peter(at)eisentraut(dot)org>, "David E(dot) Wheeler" <david(at)justatheory(dot)com>, Mankirat Singh <mankiratsingh1315(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: ABI Compliance Checker GSoC Project
Date: 2025-09-12 17:53:17
Message-ID: 2220351.1757699597@sss.pgh.pa.us
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=?utf-8?Q?=C3=81lvaro?= Herrera <alvherre(at)kurilemu(dot)de> writes:
> On 2025-Sep-12, Tom Lane wrote:
>> My concern is that when we get a report, we might decide to apply
>> some fix to remove the ABI delta, or we might decide it's intentional
>> and/or harmless and leave the code as-is.

> The solution I propose for this (which I have mentioned before) is to
> allow for our source tree to carry exclusion files. The ABI checker
> would refrain from turning red for any breaks that match what's in those
> files.

That seems substantially more complicated than just moving which
commit is considered the baseline. It might be less reliable too:
if the exclusions are written sloppily, they might hide problems
we'd rather find out about. (I do not regard valgrind suppression
files as a model of good engineering...)

regards, tom lane

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