The following bug has been logged online:
Bug reference: 4058
Logged by: Frank F.
Email address: merreborn@yahoo.com
PostgreSQL version: 8.2.5-2PGDG
Operating system: Centos
Description: xml_table() segfaults on null
Details:
The xml_table() function in the xml2 contrib module causes a segfault in
postgres 8.2.5 if it encounters a null value in the column that it's trying
to pull XML data from.