Program received signal SIGSEGV, Segmentation fault.
advance_transition_function (aggstate=aggstate@entry=0x2b5c5f0, peraggstate=peraggstate@entry=0x2b5efd0, pergroupstate=pergroupstate@entry=0x8) at nodeAgg.c:468
468                     if (pergroupstate->noTransValue)
(gdb) bt
#0  advance_transition_function (aggstate=aggstate@entry=0x2b5c5f0, peraggstate=peraggstate@entry=0x2b5efd0, pergroupstate=pergroupstate@entry=0x8) at nodeAgg.c:468
#1  0x00000000005c3494 in advance_aggregates (aggstate=aggstate@entry=0x2b5c5f0, pergroup=pergroup@entry=0x8) at nodeAgg.c:624
#2  0x00000000005c3dc2 in agg_fill_hash_table (aggstate=0x2b5c5f0) at nodeAgg.c:1640
#3  ExecAgg (node=node@entry=0x2b5c5f0) at nodeAgg.c:1338
#4  0x00000000005b6c68 in ExecProcNode (node=node@entry=0x2b5c5f0) at execProcnode.c:486
#5  0x00000000005b3e90 in ExecutePlan (dest=0xbffa40 <donothingDR>, direction=<optimized out>, numberTuples=0, sendTuples=1 '\001', operation=CMD_SELECT, planstate=0x2b5c5f0, estate=0x2b5c4d8) at execMain.c:1480
#6  standard_ExecutorRun (queryDesc=0x2b58d78, direction=<optimized out>, count=0) at execMain.c:308
#7  0x000000000056df73 in ExplainOnePlan (plannedstmt=plannedstmt@entry=0x2b58ce0, into=into@entry=0x0, es=es@entry=0x7fff6fa066c0, queryString=<optimized out>, params=0x0, planduration=planduration@entry=0x7fff6fa06650) at explain.c:487
#8  0x000000000056e22d in ExplainOneQuery (query=<optimized out>, into=0x0, es=0x7fff6fa066c0, queryString=0x2b0bf68 "explain analyze select a, count(*) from test_hash_agg where a < 100000 group by a;", params=0x0) at explain.c:341
#9  0x000000000056e670 in ExplainQuery (stmt=stmt@entry=0x2b0d248, queryString=0x2b0bf68 "explain analyze select a, count(*) from test_hash_agg where a < 100000 group by a;", params=params@entry=0x0, dest=0x2b1b490) at explain.c:232
#10 0x00000000006b5af6 in standard_ProcessUtility (parsetree=0x2b0d248, queryString=<optimized out>, context=<optimized out>, params=0x0, dest=<optimized out>, completionTag=0x7fff6fa067d0 "") at utility.c:648
#11 0x00000000006b2c61 in PortalRunUtility (portal=portal@entry=0x2b4c3b8, utilityStmt=0x2b0d248, isTopLevel=<optimized out>, dest=dest@entry=0x2b1b490, completionTag=completionTag@entry=0x7fff6fa067d0 "") at pquery.c:1187
#12 0x00000000006b3add in FillPortalStore (portal=portal@entry=0x2b4c3b8, isTopLevel=isTopLevel@entry=1 '\001') at pquery.c:1061
#13 0x00000000006b45cf in PortalRun (portal=portal@entry=0x2b4c3b8, count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=1 '\001', dest=dest@entry=0x2b3e828, altdest=altdest@entry=0x2b3e828, 
    completionTag=completionTag@entry=0x7fff6fa06bd0 "") at pquery.c:785
#14 0x00000000006b1fe3 in exec_simple_query (query_string=0x2b0bf68 "explain analyze select a, count(*) from test_hash_agg where a < 100000 group by a;") at postgres.c:1045
#15 PostgresMain (argc=<optimized out>, argv=argv@entry=0x2aa5d20, dbname=0x2aa5b88 "test", username=<optimized out>) at postgres.c:4012
#16 0x000000000046278f in BackendRun (port=0x2ac5b10) at postmaster.c:4130
#17 BackendStartup (port=0x2ac5b10) at postmaster.c:3805
#18 ServerLoop () at postmaster.c:1573
#19 0x0000000000658156 in PostmasterMain (argc=argc@entry=3, argv=argv@entry=0x2aa4900) at postmaster.c:1220
#20 0x000000000046338b in main (argc=3, argv=0x2aa4900) at main.c:220
(gdb) print pergroupstate->noTransValue
Cannot access memory at address 0x11
(gdb) print pergroupstate
$1 = (AggStatePerGroup) 0x8