Fix PL/Python crash when a SRF is redefined mid-execution

Title

CI (CFBot)

Summary

Stats (from CFBot)

Patch version: v2, Patch count: 1, First patch: +452−260, All patches: +452−260

Tags

Bugfix

Created

2026-06-21 15:04:01

Last modified

2026-06-21 19:08:53 (21 minutes ago)

Latest email

2026-06-18 12:13:57 (3 days ago)

Status

PG20-1 (2026-07-01 – 2026-07-31): Committed

Target version

Authors

Matheus Alcantara (matheus.alcantara)

Reviewers

Tom Lane (tgl) Become reviewer

Committer

Tom Lane (tgl)

Links

Emails

BUG #19480: PL/Python SRF crashes (SIGSEGV) when function is replaced mid-iteration: use-after-free in PLy_funct: First at 2026-05-15 11:11:37 by PG Bug reporting form <noreply at postgresql.org>
Latest at 2026-06-18 12:13:57 by "Matheus Alcantara" <matheusssilv97 at gmail.com>
Latest attachment (v2-0001-plpython-Use-funccache.c-infrastructure-for-proce.patch) at 2026-06-18 12:13:57 from "Matheus Alcantara" <matheusssilv97 at gmail.com>
    Attachment (v2-0001-plpython-Use-funccache.c-infrastructure-for-proce.patch) at 2026-06-18 12:13:57 from "Matheus Alcantara" <matheusssilv97 at gmail.com> (Patch: Yes)
    Attachment (v1-0001-plpython-Use-funccache.c-infrastructure-for-proce.patch) at 2026-06-05 18:09:26 from "Matheus Alcantara" <matheusssilv97 at gmail.com> (Patch: Yes)
    Attachment (0001-plpython-Use-correct-memory-context-for-savedargs.patch) at 2026-05-25 22:26:17 from "Matheus Alcantara" <matheusssilv97 at gmail.com> (Patch: Yes)

History

When	Who	What
2026-06-21 19:08:53	Tom Lane (tgl)	Closed in commitfest PG20-1 with status: Committed
2026-06-21 19:08:53	Tom Lane (tgl)	Changed committer to tgl
2026-06-21 15:04:04	Tom Lane (tgl)	Added tgl as reviewer
2026-06-21 15:04:01	Tom Lane (tgl)	Attached mail thread 19480-f1f9fdce30462fc4@postgresql.org
2026-06-21 15:04:01	Tom Lane (tgl)	Created patch record