this is the op on running gdb.
Is it possible that i can send the core file?
Type "show copying" to see the conditions.
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This GDB was configured as "i386-redhat-linux-gnu"...
(no debugging symbols found)...
Core was generated by `postgres: writer process
'.
Program terminated with signal 6, Aborted.
#0 0xffffe410 in ?? ()
(gdb) bt
#0 0xffffe410 in ?? ()
#1 0x426c2d17 in ?? ()
#2 0x0820d40a in yycheck ()
#3 0x080a56be in cookDefault ()
#4 0x080a59b1 in RelationTruncateIndexes ()
#5 0x080a608b in UpdateIndexRelation ()
#6 0x080a2b97 in recordDependencyOnSingleRelExpr ()
#7 0x080a28e1 in deleteDependentObjects ()
#8 0x081747db in check_circularity ()
#9 0x080a860f in OpclassnameGetOpcid ()
#10 0x081742e0 in aclupdate ()
#11 0x08172c5f in ProcessUtility ()
#12 <signal handler called>
#13 0xffffe410 in ?? ()
#14 0x08170afb in ProcessQuery ()
#15 0x0813e3e5 in replace_outer_var ()
#16 0x426aee42 in ?? ()
(gdb)