Subject: [BUG#19384] Fix Server crash at textout

From: vaibhave postgres <[email-masked]>
Date: Mon, 26 Jan 2026 10:46:38 +0530

Hey hackers,

I replaced the `tupDesc_identifier` with a 64-bit signature from its
structure which was a todo. Stored Datums can detect stale definitions.

Thanks.

[1] BUG #19384: Server crash at textout - Mailing list pgsql-bugs :
Postgres Professional
<https://postgrespro.com/list/id/[email-masked]>