Program received signal SIGSEGV, Segmentation fault.
compute_geography_stats (stats=0x8c74840, fetchfunc=0x8165220 <std_fetch_func>, samplerows=1, 
    totalrows=1) at geography_estimate.c:1344
1344						geogstats->value[x + y * unitsx + z * unitsx * unitsy] += 1;
(gdb) bt
#0  compute_geography_stats (stats=0x8c74840, fetchfunc=0x8165220 <std_fetch_func>, samplerows=1, 
    totalrows=1) at geography_estimate.c:1344
#1  0x081674c0 in do_analyze_rel (onerel=0xb541fe10, acquirefunc=0x81661b0 <acquire_sample_rows>, 
    relpages=1, inh=0 '\000', elevel=13, vacstmt=<value optimized out>) at analyze.c:525
#2  0x0816822e in analyze_rel (relid=313346, vacstmt=0x8f1ef88, bstrategy=0x8f16b48)
    at analyze.c:265
#3  0x081c6b35 in vacuum (vacstmt=0x8f1ef88, relid=0, do_toast=1 '\001', 
    bstrategy=<value optimized out>, for_wraparound=0 '\000', isTopLevel=0 '\000') at vacuum.c:247
#4  0x082a788e in PortalRunUtility (portal=0x8a9bcf8, utilityStmt=0x8f1ef88, isTopLevel=0 '\000', 
    dest=0x8d90980, completionTag=0xbfa467fc "") at pquery.c:1186
#5  0x082a8233 in PortalRunMulti (portal=0x8a9bcf8, isTopLevel=0 '\000', dest=0x8d90980, 
    altdest=0x8d90980, completionTag=0xbfa467fc "") at pquery.c:1324
#6  0x082a8e5c in PortalRun (portal=0x8a9bcf8, count=2147483647, isTopLevel=0 '\000', 
    dest=0x8d90980, altdest=0x8d90980, completionTag=0xbfa467fc "") at pquery.c:815
#7  0x082a4dcb in exec_simple_query (argc=2, argv=0x8a02780, username=0x8a026e0 "aixm_unittest")
    at postgres.c:1052
#8  PostgresMain (argc=2, argv=0x8a02780, username=0x8a026e0 "aixm_unittest") at postgres.c:3968
#9  0x082618e8 in BackendRun () at postmaster.c:3619
#10 BackendStartup () at postmaster.c:3304
#11 ServerLoop () at postmaster.c:1367
#12 0x0826243c in PostmasterMain (argc=3, argv=0x8a01318) at postmaster.c:1127
#13 0x081ff890 in main (argc=3, argv=0x8a01318) at main.c:199