Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffd2a72700 (LWP 15972)]
0x00007fffc570dc5c in _nss_wins_gethostbyname_r () from /lib/libnss_wins.so.2
(gdb) where
#0  0x00007fffc570dc5c in _nss_wins_gethostbyname_r ()
   from /lib/libnss_wins.so.2
#1  0x00007ffff6dc7d89 in gethostbyname2_r () from /lib/libc.so.6
#2  0x00007ffff6d7cf20 in ?? () from /lib/libc.so.6
#3  0x00007ffff6d7e802 in getaddrinfo () from /lib/libc.so.6
#4  0x00000000005209fc in ves_icall_System_Net_Dns_GetHostByName_internal (
    host=<value optimized out>, h_name=0x7fffd2a716b8, 
    h_aliases=0x7fffd2a716c0, h_addr_list=0x7fffd2a716c8) at socket-io.c:2772
#5  0x0000000040234a9f in ?? ()
#6  0x0000000002238a20 in ?? ()
#7  0x00007ffff40b5270 in ?? ()
#8  0x00007fffdb880c80 in ?? ()
#9  0x00007fffdb7f3c80 in ?? ()
#10 0x00000000018ec418 in ?? ()
#11 0x00007fffd2a71760 in ?? ()
#12 0x00007fffd2a71650 in ?? ()
#13 0x00007ffff40b5270 in ?? ()
#14 0x00007fffdb880c80 in ?? ()
#15 0x00007fffdb7f3c80 in ?? ()
#16 0x00007fffdb7f3c80 in ?? ()
#17 0x0000000040234978 in ?? ()
#18 0x00007fffdb95e500 in ?? ()
#19 0x0000000000000000 in ?? ()
