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Segfault on updating foreign table - Mailing list pgsql-bugs

From Lukáš Sobotka
Subject Segfault on updating foreign table
Date
Msg-id CAJif3k+iA_ekBB5Zw2hDBaE1wtiQa4LH4_JUXrrMGwTrH0J01Q@mail.gmail.com
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Responses Re: Segfault on updating foreign table
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Hi there,

I tried to synchronize two tables on different databases using foreign data wrapper. I executed update of foreign table with sub-query selection from local table. As the result I got segmentation fault. General query:
UPDATE foreign_table SET (col) = (
    SELECT col
        FROM local_table
        WHERE foreign_table.id = local_table.id
);

I am not looking for working or better solution, I just want let you know about this. I think the query is according documentation and segfault is not suitable result. If somebody could check it I would be grateful.

For reproducer or log see attachments.
Tested on Ubuntu 18.04.3 LTS with PG12: PostgreSQL 12.1 (Ubuntu 12.1-1.pgdg18.04+1) on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0, 64-bit

Thanks for your time.

Best regards,
Lukas
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