Re: BUG #18692: Segmentation fault when extending a varchar column with a gist index with custom signal length

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: nicolas(dot)maus(at)bertelsmann(dot)de
Cc: Alexander Korotkov <aekorotkov(at)gmail(dot)com>, pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: BUG #18692: Segmentation fault when extending a varchar column with a gist index with custom signal length
Date: 2024-11-06 17:08:53
Message-ID: 3261639.1730912933@sss.pgh.pa.us
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PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> When extending a varchar column with a gist index with a custom signal
> length the Postgres server crashes with a segmentation fault.

What this shows is that CompareOpclassOptions has never been tested
at all except with null inputs. It's trying to call array_eq
without providing an FmgrInfo.

regards, tom lane

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