lobject (conn) can segfault with bad parameter

[psycoteam]

Originally submitted by: Voicu Hodrea

attempting to create an lobject but giving a wrong parameter (something which is not a connection object) will segfault python

[dvarrazzo]

Thank you for the report. Args should be parsed using O! instead of O. See cursor_init() for an example.

[psycoteam]

Originally submitted by: Voicu

Hmm, I tested what happens when doing psycopg2.extensions.cursor(<not a conn object>) and the result is weird - the cursor object is created and it lets you do operations but fails in unexpected ways - the query fails with the exception "cursor already closed" which is not very descriptive IMHO.

[dvarrazzo]

Really? It doesn't seem so:

>>> cur = psycopg2.extensions.cursor([])
TypeError: argument 1 must be psycopg2._psycopg.connection, not list

[dvarrazzo]

Fixed:

dvarrazzo/psycopg@7e9e11e

[psycoteam]

Originally submitted by: Voicu

Hmm, I now see I'm on an earlier version actually (2.4.5)

@@@ python

import psycopg2.extensions as ex
ex.cursor([])
<cursor object at 0x00000000026B9B40; closed: 0>

Thanks for the fix, I should probably update...