I have found I can crash the backend with the following queries:
test=> BEGIN WORK;BEGINtest=> DECLARE bigtable_cursor CURSOR FORtest-> SELECT * FROM bigtable;SELECTtest=> FETCH 3
priorFROM bigtable_cursor;ERROR: parser: parse error at or near "prior"test=> FETCH prior FROM
bigtable_cursor;pqReadData()-- backend closed the channel unexpectedly. This probably means the backend
terminatedabnormally before or while processing the request.The connection to the server was lost. Attempting
reset:Succeeded.
Here is the backtrace. Comments?
---------------------------------------------------------------------------
#0 0x281d2d65 in kill ()
#1 0x2821ea5d in abort ()
#2 0x8146548 in ExcAbort (excP=0x8199294, detail=0, data=0x0, message=0x81812ad "!(MyProc->xmin != 0)") at
excabort.c:27
#3 0x8146497 in ExcUnCaught (excP=0x8199294, detail=0, data=0x0, message=0x81812ad "!(MyProc->xmin != 0)") at
exc.c:170
#4 0x81464ef in ExcRaise (excP=0x8199294, detail=0, data=0x0, message=0x81812ad "!(MyProc->xmin != 0)") at
exc.c:187
#5 0x8145b3a in ExceptionalCondition ( conditionName=0x81812ad "!(MyProc->xmin != 0)", exceptionP=0x8199294,
detail=0x0,fileName=0x81811a3 "sinval.c", lineNumber=362) at assert.c:73
#6 0x8103730 in GetSnapshotData (serializable=0 '\000') at sinval.c:362
#7 0x81501d7 in SetQuerySnapshot () at tqual.c:611
#8 0x810c329 in pg_exec_query_dest ( query_string=0x81cd398 "FETCH prior FROM bigtable_cursor;\n", dest=Debug,
aclOverride=0)at postgres.c:677
#9 0x810c244 in pg_exec_query ( query_string=0x81cd398 "FETCH prior FROM bigtable_cursor;\n") at postgres.c:607
#10 0x810d43d in PostgresMain (argc=4, argv=0x8047534, real_argc=4, real_argv=0x8047534) at postgres.c:1642
#11 0x80c07fc in main (argc=4, argv=0x8047534) at main.c:103
#12 0x8062a9c in __start ()
-- Bruce Momjian | http://www.op.net/~candle pgman@candle.pha.pa.us | (610)
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