#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
        set = {__val = {0, 94179621235312, 0, 140269841937623, 140737415839744, 94179621235312, 94179621235413, 94179621235312, 94179621235312, 94179621235424, 
            94179621235612, 94179621235312, 94179621235612, 0, 0, 0}}
        pid = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
#1  0x00007f931e149535 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x55a7e6e2e830, sa_sigaction = 0x55a7e6e2e830}, sa_mask = {__val = {0, 303, 94179621235312, 0, 0, 0, 21474836480, 
              140734095142360, 140734095142208, 140269795888178, 140269795888178, 0, 18417431166106398208, 140269843022778, 0, 140269795888178}}, sa_flags = 308009844, 
          sa_restorer = 0x7f93125b8e27}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f931e14940f in __assert_fail_base (fmt=0x7f931b5b4c32 <error: Cannot access memory at address 0x7f931b5b4c32>, assertion=0x7f93125b8e27 "NULL != raster", 
    file=0x7f93125bdb74 "rt_raster.c", line=1443, function=<optimized out>) at assert.c:92
        str = 0x55a7e6e2e830 "Ђ\334\346\247U"
        total = 4096
#3  0x00007f931e157102 in __GI___assert_fail (assertion=assertion@entry=0x7f93125b8e27 "NULL != raster", file=file@entry=0x7f93125bdb74 "rt_raster.c", line=line@entry=1443, 
    function=function@entry=0x7f93125bde40 <__PRETTY_FUNCTION__.44386> "rt_raster_from_band") at assert.c:101
No locals.
#4  0x00007f93125754d1 in rt_raster_from_band (raster=<optimized out>, bandNums=bandNums@entry=0x7fff35bfaf64, count=count@entry=1) at rt_raster.c:1443
        rast = 0x0
        i = 0
        j = 0
        idx = <optimized out>
        flag = <optimized out>
        gt = {0, 0, 0, 0, 0, 0}
        __PRETTY_FUNCTION__ = "rt_raster_from_band"
#5  0x00007f931253e7f5 in RASTER_union_finalfn (fcinfo=0x7fff35bfb000) at rtpg_mapalgebra.c:2905
        bandNums = {0}
        iwr = 0x55a7e6e586f0
        _rtn = 0x0
        _raster = 0x0
        pgraster = 0x0
        i = 0
        j = <optimized out>
        itrset = 0x55a7e6e5a700
        _band = <optimized out>
        noerr = 1
        status = <optimized out>
        pixtype = <optimized out>
        hasnodata = <optimized out>
        nodataval = 0
        __func__ = "RASTER_union_finalfn"
#6  0x000055a7e535e8ba in finalize_aggregate (aggstate=aggstate@entry=0x55a7e6e54910, peragg=peragg@entry=0x55a7e6e55d38, resultVal=resultVal@entry=0x55a7e6e55d08, 
    resultIsNull=resultIsNull@entry=0x55a7e6e55d20, pergroupstate=<optimized out>, pergroupstate=<optimized out>) at ./build/../src/backend/executor/nodeAgg.c:954
        numFinalArgs = 1
        fcinfodata = {fcinfo = {flinfo = 0x55a7e6e55d48, context = 0x55a7e6e54910, resultinfo = 0x0, fncollation = 0, isnull = false, nargs = 1, args = 0x7fff35bfb020}, 
          fcinfo_data = "H]\345\346\247U\000\000\020I\345\346\247U", '\000' <repeats 15 times>, "\177\001\000\360\206\345\346\247U\000\000\000\275R\022\223\177\000\000\300\347\317\346\247U\000\000\270\260\277\065\377\177\000\000\264\260\277\065\377\177\000\000\001", '\000' <repeats 11 times>, "\377\177\000\000\b\275R\022\223\177\000\000 \212R\022\223\177\000\000@c\345\346\247U\000\000`\300\020\217", '\000' <repeats 12 times>, "\001C<\002\000\000\000\000\200\261\277\065\377\177\000\000p\261\277\065\377\177\000\000\270\260\277\065\377\177\000\000\060/\332\346\247U\000\000q\000\000\000\000\000\000\000\001", '\000' <repeats 15 times>, "`4\000\000\347\004\000\000"...}
        fcinfo = 0x7fff35bfb000
        anynull = <optimized out>
        oldContext = 0x55a7e6e545c0
        i = <optimized out>
        lc = <optimized out>
        pertrans = 0x55a7e6e55dc8
#7  0x000055a7e535ee45 in finalize_aggregates (aggstate=aggstate@entry=0x55a7e6e54910, peraggs=peraggs@entry=0x55a7e6e55d38, pergroup=0x55a7e6e55ff0)
    at ./build/../src/backend/executor/nodeAgg.c:1163
        peragg = 0x55a7e6e55d38
        transno = <optimized out>
        pergroupstate = <optimized out>
        econtext = <optimized out>
        aggvalues = 0x55a7e6e55d08
        aggnulls = 0x55a7e6e55d20
        aggno = 0
        transno = <optimized out>
#8  0x000055a7e535f72e in agg_retrieve_direct (aggstate=0x55a7e6e54910) at ./build/../src/backend/executor/nodeAgg.c:1897
        econtext = 0x55a7e6e54cc8
        firstSlot = 0x55a7e6e554e8
        numGroupingSets = <optimized out>
        node = 0x55a7e6cac040
        tmpcontext = 0x55a7e6e54b38
        peragg = 0x55a7e6e55d38
        outerslot = <optimized out>
        nextSetSize = <optimized out>
        pergroups = 0x55a7e6e55fd8
        result = <optimized out>
        hasGroupingSets = false
        currentSet = <optimized out>
        numReset = <optimized out>
        i = <optimized out>
        node = <optimized out>
        econtext = <optimized out>
        tmpcontext = <optimized out>
        peragg = <optimized out>
        pergroups = <optimized out>
        outerslot = <optimized out>
        firstSlot = <optimized out>
        result = <optimized out>
        hasGroupingSets = <optimized out>
        numGroupingSets = <optimized out>
        currentSet = <optimized out>
        nextSetSize = <optimized out>
        numReset = <optimized out>
        i = <optimized out>
#9  ExecAgg (pstate=0x55a7e6e54910) at ./build/../src/backend/executor/nodeAgg.c:1563
        node = 0x55a7e6e54910
        result = 0x0
#10 0x000055a7e534cac3 in ExecProcNode (node=0x55a7e6e54910) at ./build/../src/include/executor/executor.h:239
No locals.
#11 ExecutePlan (execute_once=<optimized out>, dest=0x55a7e6e53c40, direction=<optimized out>, numberTuples=0, sendTuples=<optimized out>, operation=CMD_SELECT, 
    use_parallel_mode=<optimized out>, planstate=0x55a7e6e54910, estate=0x55a7e6e546d0) at ./build/../src/backend/executor/execMain.c:1646
        slot = <optimized out>
        current_tuple_count = 0
        slot = <optimized out>
        current_tuple_count = <optimized out>
#12 standard_ExecutorRun (queryDesc=0x55a7e6cf8b60, direction=<optimized out>, count=0, execute_once=<optimized out>) at ./build/../src/backend/executor/execMain.c:364
        estate = 0x55a7e6e546d0
        operation = CMD_SELECT
        dest = 0x55a7e6e53c40
        sendTuples = <optimized out>
        oldcontext = 0x55a7e6cf8a50
        __func__ = "standard_ExecutorRun"
#13 0x000055a7e54b26ec in PortalRunSelect (portal=portal@entry=0x55a7e6d3d860, forward=forward@entry=true, count=0, count@entry=9223372036854775807, 
    dest=dest@entry=0x55a7e6e53c40) at ./build/../src/backend/tcop/pquery.c:929
        queryDesc = 0x55a7e6cf8b60
        direction = <optimized out>
        nprocessed = <optimized out>
        __func__ = "PortalRunSelect"
#14 0x000055a7e54b3c68 in PortalRun (portal=portal@entry=0x55a7e6d3d860, count=count@entry=9223372036854775807, isTopLevel=isTopLevel@entry=true, 
    run_once=run_once@entry=true, dest=dest@entry=0x55a7e6e53c40, altdest=altdest@entry=0x55a7e6e53c40, completionTag=0x7fff35bfbad0 "")
    at ./build/../src/backend/tcop/pquery.c:770
        save_exception_stack = 0x7fff35bfbce0
        save_context_stack = 0x0
        local_sigjmp_buf = {{__jmpbuf = {1, 1040287845219318153, 94179619944656, 140734095145680, 94179620542560, 94179621682240, 1040287845120752009, 6547804643162077577}, 
            __mask_was_saved = 0, __saved_mask = {__val = {2817148525, 0, 94179620554120, 94179620550912, 94175747899393, 94179620260432, 2, 140734095145678, 1, 112, 
                94179619940672, 2, 94179620542560, 140734095145552, 94179596210365, 2}}}}
        result = <optimized out>
        nprocessed = <optimized out>
        saveTopTransactionResourceOwner = 0x55a7e6d03410
        saveTopTransactionContext = 0x55a7e6d7b430
        saveActivePortal = 0x0
        saveResourceOwner = 0x55a7e6d03410
        savePortalContext = 0x0
        saveMemoryContext = 0x55a7e6d7b430
        __func__ = "PortalRun"
#15 0x000055a7e54afabc in exec_simple_query (query_string=0x55a7e6caaa50 "select st_union(null::raster, 1);") at ./build/../src/backend/tcop/postgres.c:1215
        parsetree = 0x55a7e6cab8a0
        portal = 0x55a7e6d3d860
        snapshot_set = <optimized out>
        commandTag = <optimized out>
        completionTag = "\000\000\000\000\002\000\000\000\t", '\000' <repeats 16 times>, "\356\372\332\000\000\000\000Q\000\000\000\000\000\000\000\200\274\277\065\377\177\000\000P\252\312\346\247U\000\000H\030\320\346\247U\000"
        querytree_list = <optimized out>
        plantree_list = <optimized out>
        receiver = 0x55a7e6e53c40
        format = 0
        dest = DestRemote
        oldcontext = 0x55a7e6d7b430
        parsetree_list = 0x55a7e6cab8f0
        parsetree_item = 0x55a7e6cab8d0
        save_log_statement_stats = false
        was_logged = false
        use_implicit_block = false
        msec_str = "\000\000\000\000\002\000\000\000\t", '\000' <repeats 16 times>, "\356\372\332\000\000\000"
        __func__ = "exec_simple_query"
#16 0x000055a7e54b14be in PostgresMain (argc=<optimized out>, argv=argv@entry=0x55a7e6d019a0, dbname=<optimized out>, username=<optimized out>)
    at ./build/../src/backend/tcop/postgres.c:4247
        query_string = 0x55a7e6caaa50 "select st_union(null::raster, 1);"
        firstchar = <optimized out>
        input_message = {data = 0x55a7e6caaa50 "select st_union(null::raster, 1);", len = 34, maxlen = 1024, cursor = 34}
        local_sigjmp_buf = {{__jmpbuf = {140734095146144, 1040287845372410249, 1, 94179620296776, 140734095147008, 94179620267216, 1040287845185763721, 6547804644451170697}, 
            __mask_was_saved = 1, __saved_mask = {__val = {0, 140734095150790, 140734095150745, 140734095151058, 0, 139637976727552, 94179620267216, 140734095146416, 
                18417431166106398208, 140734095146576, 94179596318751, 206158430256, 140734095146600, 140734095146400, 18417431166106398208, 94179619916352}}}}
        send_ready_for_query = false
        disable_idle_in_transaction_timeout = false
        __func__ = "PostgresMain"
#17 0x000055a7e5437208 in BackendRun (port=0x55a7e6cfa4d0, port=0x55a7e6cfa4d0) at ./build/../src/backend/postmaster/postmaster.c:4448
        av = 0x55a7e6d019a0
        maxac = <optimized out>
        ac = 1
        i = 1
        av = <optimized out>
        maxac = <optimized out>
        ac = <optimized out>
        i = <optimized out>
        __func__ = "BackendRun"
        __errno_location = <optimized out>
        __errno_location = <optimized out>
        __errno_location = <optimized out>
#18 BackendStartup (port=0x55a7e6cfa4d0) at ./build/../src/backend/postmaster/postmaster.c:4139
        bn = <optimized out>
        pid = <optimized out>
        bn = <optimized out>
        pid = <optimized out>
        __func__ = "BackendStartup"
        __errno_location = <optimized out>
        __errno_location = <optimized out>
        save_errno = <optimized out>
        __errno_location = <optimized out>
        __errno_location = <optimized out>
#19 ServerLoop () at ./build/../src/backend/postmaster/postmaster.c:1704
        port = 0x55a7e6cfa4d0
        i = <optimized out>
        rmask = {fds_bits = {32, 0 <repeats 15 times>}}
        selres = <optimized out>
        now = <optimized out>
        readmask = {fds_bits = {56, 0 <repeats 15 times>}}
        nSockets = 6
        last_lockfile_recheck_time = 1591514712
        last_touch_time = 1591514712
        __func__ = "ServerLoop"
#20 0x000055a7e543812f in PostmasterMain (argc=5, argv=0x55a7e6ca4960) at ./build/../src/backend/postmaster/postmaster.c:1377
        opt = <optimized out>
        status = <optimized out>
        userDoption = <optimized out>
        listen_addr_saved = <optimized out>
        i = <optimized out>
        output_config_variable = <optimized out>
        __func__ = "PostmasterMain"
#21 0x000055a7e51a1eed in main (argc=5, argv=0x55a7e6ca4960) at ./build/../src/backend/main/main.c:228
No locals.