executing SELECT xmlelement(name foo); causes "server closed the connection unexpectedly" Error

Hi,

I am trying to exploit XML features of PostgreSQL 8.3.0 DB.

I tried executing following query:

SELECT xmlelement(name foo);

from psql prompt.

I received Following error on screen:

server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.
!>

Environment details are:

OS: *CentOS release 5 (Final)*
DB: *PostgreSQL 8.3.0*

Following is DB server log when the query was submitted:

DEBUG: forked new backend, pid=4411 socket=8
LOG: connection received: host=[local]
LOG: connection authorized: user=postgres database=testdb
DEBUG: postmaster child[4411]: starting with (
DEBUG: postgres
DEBUG: -v196608
DEBUG: -y
DEBUG: testdb
DEBUG: )
DEBUG: InitPostgres
DEBUG: StartTransaction
DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR,
xid/subid/cid: 0/1/0, nestlvl: 1, children: <>
DEBUG: CommitTransaction
DEBUG: name: unnamed; blockState: STARTED; state: INPROGR,
xid/subid/cid: 0/1/0, nestlvl: 1, children: <>
DEBUG: StartTransactionCommand
DEBUG: StartTransaction
DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR,
xid/subid/cid: 0/1/0, nestlvl: 1, children: <>
LOG: statement: SELECT xmlelement(name foo);
DEBUG: parse tree:
DETAIL: {QUERY :commandType 1 :querySource 0 :canSetTag true
:utilityStmt <>
:resultRelation 0 :intoClause <> :hasAggs false :hasSubLinks
false :rtable <>
:jointree {FROMEXPR :fromlist <> :quals <>} :targetList
({TARGETENTRY :expr
{XMLEXPR :op 1 :name foo :named_args <> :arg_names <> :args <>
:xmloption 0
:type 0 :typmod 0} :resno 1 :resname xmlelement :ressortgroupref
0 :resorigtbl
0 :resorigcol 0 :resjunk false}) :returningList <> :groupClause
<> :havingQual
<> :distinctClause <> :sortClause <> :limitOffset <> :limitCount
<> :rowMarks
<> :setOperations <>}

DEBUG: rewritten parse tree:
DETAIL: ({QUERY :commandType 1 :querySource 0 :canSetTag true
:utilityStmt <>
:resultRelation 0 :intoClause <> :hasAggs false :hasSubLinks
false :rtable <>
:jointree {FROMEXPR :fromlist <> :quals <>} :targetList
({TARGETENTRY :expr
{XMLEXPR :op 1 :name foo :named_args <> :arg_names <> :args <>
:xmloption 0
:type 0 :typmod 0} :resno 1 :resname xmlelement :ressortgroupref
0 :resorigtbl
0 :resorigcol 0 :resjunk false}) :returningList <> :groupClause
<> :havingQual
<> :distinctClause <> :sortClause <> :limitOffset <> :limitCount
<> :rowMarks
<> :setOperations <>})

DEBUG: plan:
DETAIL: {PLANNEDSTMT :commandType 1 :canSetTag true :planTree {RESULT
:startup_cost
0.00 :total_cost 0.01 :plan_rows 1 :plan_width 0 :targetlist
({TARGETENTRY
:expr {XMLEXPR :op 1 :name foo :named_args <> :arg_names <> :args <>
:xmloption 0 :type 0 :typmod 0} :resno 1 :resname xmlelement
:ressortgroupref
0 :resorigtbl 0 :resorigcol 0 :resjunk false}) :qual <> :lefttree <>
:righttree <> :initPlan <> :extParam (b) :allParam (b)
:resconstantqual <>}
:rtable <> :resultRelations <> :utilityStmt <> :intoClause <>
:subplans <>
:rewindPlanIDs (b) :returningLists <> :rowMarks <> :relationOids <>
:nParamExec 0}

*postgres: postgres testdb [local] SELECT: symbol lookup error:
postgres: postgres testdb [local] SELECT: undefined symbol:
xmlNewTextWriterMemory*
DEBUG: reaping dead processes
DEBUG: server process (PID 4411) exited with exit code 127
LOG: server process (PID 4411) exited with exit code 127
LOG: terminating any other active server processes
DEBUG: sending SIGQUIT to process 4401
DEBUG: sending SIGQUIT to process 4402
DEBUG: sending SIGQUIT to process 4403
DEBUG: sending SIGQUIT to process 4404
LOG: all server processes terminated; reinitializing
DEBUG: shmem_exit(0)
DEBUG: invoking IpcMemoryCreate(size=39288832)
DEBUG: reaping dead processes
LOG: database system was interrupted; last known up at 2008-11-20
03:48:07 EST
LOG: connection received: host=[local]
FATAL: the database system is in recovery mode
DEBUG: checkpoint record is at 0/367B0468
DEBUG: redo record is at 0/367B0468; shutdown TRUE
DEBUG: next transaction ID: 0/682118; next OID: 81920
DEBUG: next MultiXactId: 1; next MultiXactOffset: 0
LOG: database system was not properly shut down; automatic recovery in
progress
DEBUG: proc_exit(1)
DEBUG: shmem_exit(1)
DEBUG: forked new backend, pid=4413 socket=8
DEBUG: exit(1)
DEBUG: reaping dead processes
DEBUG: server process (PID 4413) exited with exit code 1
LOG: record with zero length at 0/367B04B0
LOG: redo is not required
DEBUG: transaction ID wrap limit is 2147484025, limited by database
"template1"
DEBUG: proc_exit(0)
DEBUG: shmem_exit(0)
DEBUG: exit(0)
DEBUG: reaping dead processes
LOG: autovacuum launcher started
LOG: database system is ready to accept connections

The server appeared as crashed and got restarted.

Seek your help to have this issue fixed.

Thanks,
Sushil

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