Program received signal SIGSEGV, Segmentation fault.
compute_geography_stats (stats=0x9847880, fetchfunc=0x8165220 <std_fetch_func>, samplerows=4, 
    totalrows=4) at geography_estimate.c:906
906			total_width += VARSIZE(serialized);
(gdb) bt
#0  compute_geography_stats (stats=0x9847880, fetchfunc=0x8165220 <std_fetch_func>, samplerows=4, 
    totalrows=4) at geography_estimate.c:906
#1  0x081674c0 in do_analyze_rel (onerel=0xb54ea840, 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=280577, vacstmt=0x9129c88, bstrategy=0x982d828)
    at analyze.c:265
#3  0x081c6b35 in vacuum (vacstmt=0x9129c88, 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=0x8d68cf8, utilityStmt=0x9129c88, isTopLevel=0 '\000', 
    dest=0x9950790, completionTag=0xbfcf8adc "") at pquery.c:1186
#5  0x082a8233 in PortalRunMulti (portal=0x8d68cf8, isTopLevel=0 '\000', dest=0x9950790, 
    altdest=0x9950790, completionTag=0xbfcf8adc "") at pquery.c:1324
#6  0x082a8e5c in PortalRun (portal=0x8d68cf8, count=2147483647, isTopLevel=0 '\000', 
    dest=0x9950790, altdest=0x9950790, completionTag=0xbfcf8adc "") at pquery.c:815
#7  0x082a4dcb in exec_simple_query (argc=2, argv=0x8ccf488, username=0x8ccf3e8 "aixm_unittest")
    at postgres.c:1052
#8  PostgresMain (argc=2, argv=0x8ccf488, username=0x8ccf3e8 "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=0x8cce318) at postmaster.c:1127
#13 0x081ff890 in main (argc=3, argv=0x8cce318) at main.c:199