Re: Fix use of variable after pfree - Mailing list pgsql-hackers

> On 2 Sep 2025, at 09:42, Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Tue, Sep 2, 2025 at 1:02 PM Shlok Kyal <shlok.kyal.oss@gmail.com> wrote:

>> While going through the code of the slot sync worker, I found that in
>> functions ReplSlotSyncWorkerMain and pg_sync_replication_slots the
>> variable app_name.data is being used after it is freed.
>>
>> We can get logs as following:
>> 2025-09-02 12:26:48.520 IST [3908359] ERROR:  synchronization worker
>> "" could not connect to the primary server: connection to server at
>> "localhost" (127.0.0.1), port 5432 failed: Connection refused
>>        Is the server running on that host and accepting TCP/IP connections?
>>
>> I have moved the pfree(app_data.name) after its usage.
>>
>> This change was introduced in PG_18.
>> The patch applies in the HEAD and REL_18_STABLE branches.
>
> Thanks for the patch. It looks good to me. I'll take care of it.

Agreed, this looks correct.

--
Daniel Gustafsson