| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | s(dot)lyubimov(at)postgrespro(dot)ru |
| Cc: | pgsql-bugs(at)lists(dot)postgresql(dot)org |
| Subject: | Re: BUG #19496: Assert("ItemPointerIsValid(pointer)") when using pageinspect |
| Date: | 2026-05-27 13:57:37 |
| Message-ID: | 465323.1779890257@sss.pgh.pa.us |
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| Thread: | |
| Lists: | pgsql-bugs |
PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> I found an assertion failure in pageinspect.
> SQL:
> CREATE EXTENSION IF NOT EXISTS pageinspect;
> WITH page AS (
> SELECT set_byte(
> set_byte(
> set_byte(
> set_byte(
> set_byte(
> set_byte(
> set_byte(
> set_byte(decode(repeat('00', 8192), 'hex'),
> 12, 40),
> 14, 248),
> 15, 31),
> 16, 248),
> 17, 31),
> 18, 4),
> 19, 32),
> 8190, 131) AS p
> )
> SELECT * FROM gin_leafpage_items((SELECT p FROM page));
Does that WITH actually construct a valid GIN page image?
I don't think we make any guarantee that pageinspect
won't crash on bad data.
regards, tom lane
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