On 11.11.2010 16:30, Yeb Havinga wrote:

The following bug has been logged online:

Bug reference:      5748
Logged by:          Yeb Havinga
Email address:      yebhavi...@gmail.com
PostgreSQL version: 9.0.1
Operating system:   Linux
Description:        Invalid oidvector data during binary recv
Details:

postgres=# create table a as select ''::oidvector;
SELECT 1
postgres=# copy a to '/tmp/test' with binary;
COPY 1
postgres=# copy a from '/tmp/test' with binary;
ERROR:  invalid oidvector data

The error caused by the ARR_LBOUND(result)[0] != 0) check in oidvectorrecv,
and after some debugging and looking at common values of the lbound, I
wonder if this check itself is correct.

That check was added a while ago to make it impossible to inject values into the system that the text input functions wouldn't accept. There is no way to create an oidvector with non-zero lower bound through oidvectorin. But it looks like the check is not right for an empty array.

Will fix, thanks for the report.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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