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From: Tom Lane <tgl@sss.pgh.pa.us>
To: nicolas.maus@bertelsmann.de
cc: Alexander Korotkov <aekorotkov@gmail.com>, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #18692: Segmentation fault when extending a varchar column
 with a gist index with custom signal length
In-reply-to: <18692-72ea398df3ec6712@postgresql.org>
References: <18692-72ea398df3ec6712@postgresql.org>
Comments: In-reply-to PG Bug reporting form <noreply@postgresql.org>
	message dated "Wed, 06 Nov 2024 14:06:41 +0000"
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Date: Wed, 06 Nov 2024 12:08:53 -0500
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PG Bug reporting form <noreply@postgresql.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