回复：BUG #19040: Memory leak in hashed subplan node due to missing hashtempcxt reset

Haiyang Li <mohen.lhy@alibaba-inc.com>

From: 李海洋(陌痕) <mohen.lhy@alibaba-inc.com>

To: "Tom Lane" <tgl@sss.pgh.pa.us>

Cc: "feichanghong" <feichanghong@qq.com>, "ocean_li_996" <ocean_li_996@163.com>, "pgsql-bugs@lists.postgresql.org" <pgsql-bugs@lists.postgresql.org>

Date: 2025-09-09T01:52:26Z

Lists: pgsql-bugs

Commits

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Eliminate duplicative hashtempcxt in nodeSubplan.c.
- bdc6cfcd12f5 19 (unreleased) landed
Fix memory leakage in nodeSubplan.c.
- e1da9c072106 16.11 landed
- bc865ff6d1f0 18.0 landed
- abdeacdb0920 19 (unreleased) landed
- 8b6c29afd125 13.23 landed
- 862980f924ff 17.7 landed
- 5eab9b0a473e 14.20 landed
- 5ac973892b09 15.15 landed
Do execGrouping.c via expression eval machinery, take two.
- bf6c614a2f2c 11.0 cited
Fix potential failure when hashing the output of a subplan that produces
- 133924e13e00 9.1.0 cited

On 2025-09-08 20:46:10 Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Concretely, I'm thinking about the attached. 0001 is the same
> logic as in the v02 patch, but I felt we could make the code
> be shorter and prettier instead of longer and uglier. That’s
> meant for back-patch, and then 0002 is for master only.
Yeah, v04-0001 and v04-0002 look good for me. 
Thanks for refining the patch.
—
Thanks
Haiyang Li