| From: | Hiroshi Inoue <inoue(at)tpf(dot)co(dot)jp> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Cc: | Joshua Berry <yoberi(at)gmail(dot)com>, pgsql-bugs(at)postgresql(dot)org, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Subject: | Re: [ODBC] Segmentation Fault in Postgres server when using psqlODBC |
| Date: | 2013-06-13 13:31:20 |
| Message-ID: | 51B9C9A8.9000109@tpf.co.jp |
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| Thread: | |
| Lists: | pgsql-bugs pgsql-odbc |
(2013/06/12 1:26), Andres Freund wrote:
> On 2013-06-11 19:20:57 +0300, Heikki Linnakangas wrote:
>> On 11.06.2013 19:04, Joshua Berry wrote:
>>> Hiroshi Inoue has developed the attached patch to correct the issue that
>>> was reported. More of the dialogue can be found in the pgsql-odbc list.
>>
>> I tried to follow that thread over at pgsql-odbc, but couldn't quite
>> understand what the problem is. Did you have a test program to reproduce it?
>> Or failing that, what is the sequence of protocol messages that causes the
>> problem?
>
> I'd guess creating a SQL level WITH HOLD cursor and then fetching that
> via the extended protocol, outside the transaction, should do the trick.
OK I made a test C program which reproduces the crash.
The program uses libpq and a hack.
I attached the program.
Please modify the connect operation suitable for your environment.
Note that the connection should be non-ssl.
Also add error checkings if needed.
regards,
Hiroshi Inoue
| Attachment | Content-Type | Size |
|---|---|---|
| heldcursor.c | text/x-csrc | 1.2 KB |
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