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From: Tom Lane <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: Re: BUG #19421: PostgreSQL MERGE Crash: heap_compute_data_size() at heaptuple.c:236
Date: Sat, 28 Feb 2026 14:56:02 -0500
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>

PG Bug reporting form <[email protected]> writes:
> PostgreSQL version: 15.5

The current release in that branch is 15.17; 15.5 is more than two
years out of date.

> -- PostgreSQL MERGE SIGSEGV Minimal Reproduction
> -- Crash location: heap_compute_data_size() at heaptuple.c:236

In 15.17, this example seems to do what I'd expect:

ERROR:  new row for relation "parent_tbl" violates check constraint "pcheck"
DETAIL:  Failing row contains (1, 100).

Quickly trawling the commit log, I'd guess this was fixed in
commit d6a3f3272ffee792e27c5dd871d7cf1cbf418962.

Please test against current release(s) before submitting bug reports.

			regards, tom lane

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