BUG #1592: "with hold" cursor problem

The following bug has been logged online:

Bug reference:      1592
Logged by:          Gabor Berenyi
Email address:      ber_@freemail.hu
PostgreSQL version: 8.0.0
Operating system:   i86 Debian Linux 2.4.20
Description:        "with hold" cursor problem
Details:

begin;
declare t cursor with hold for select function() as x from R;
commit;

Documentation says that the rows represented by a held cursor are copied
into a temporary file or memory area, but they are not, if they are results
of a function call. Instead, "commit" aborts the connection.