BUG #19752: GROUP BY on a constant and a cast to a length-limited array type crashes the server while planning

Title

CI (CFBot)

Summary

Stats (from CFBot)

Patch version: v3, Patch count: 1, First patch: +143−10, All patches: +143−10

Tags

Bugfix

Created

2026-10-28 12:25:27

Last modified

2026-10-28 12:25:27 (1 hour ago)

Latest email

2026-10-28 12:26:38 (1 hour ago)

Status

PG20-3 (2026-11-01 – 2026-11-30): Needs review

Target version

Authors

Matheus Alcantara (matheus.alcantara)

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BUG #19752: GROUP BY on a constant and a cast to a length-limited array type crashes the server while planning: First at 2026-10-08 18:20:17 by PG Bug reporting form <noreply at postgresql.org>
Latest at 2026-10-28 12:26:38 by Matheus Alcantara <matheusssilv97 at gmail.com>
Latest attachment (v3-0001-Don-t-replace-Var-free-subexpressions-with-grouped-V.patch) at 2026-10-26 09:16:29 from Andrey Rachitskiy <pl0h0yp1 at gmail.com>
    Attachment (v3-0001-Don-t-replace-Var-free-subexpressions-with-grouped-V.patch) at 2026-10-26 09:16:29 from Andrey Rachitskiy <pl0h0yp1 at gmail.com> (Patch: No)
    Attachment (v2-0001-Don-t-replace-Var-free-subexpressions-with-groupe.patch) at 2026-10-23 15:34:28 from "Matheus Alcantara" <matheusssilv97 at gmail.com> (Patch: No)
    Attachment (0001-Match-Const-GROUP-BY-items-by-targetlist-entry.patch) at 2026-10-08 21:21:07 from Andrey Rachitskiy <pl0h0yp1 at gmail.com> (Patch: Yes)

History

When	Who	What
2026-10-28 12:25:27	Matheus Alcantara (matheus.alcantara)	Attached mail thread 19752-928339cd23b58a33@postgresql.org
2026-10-28 12:25:27	Matheus Alcantara (matheus.alcantara)	Created patch record