commit 595aba70a4c676f7efaf6a012f54cd22aa189c5b
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Mon Aug 26 15:42:29 2013 +0530

    Initialize res_hconf in nscd
    
    Fixes BZ #15890.

diff -pruN glibc-2.17-c758a686/nscd/aicache.c glibc-2.17-c758a686/nscd/aicache.c
--- glibc-2.17-c758a686/nscd/aicache.c	2013-08-11 04:22:55.000000000 +0530
+++ glibc-2.17-c758a686/nscd/aicache.c	2013-08-26 11:10:25.843470413 +0530
@@ -25,6 +25,7 @@
 #include <time.h>
 #include <unistd.h>
 #include <sys/mman.h>
+#include <resolv/res_hconf.h>
 
 #include "dbg_log.h"
 #include "nscd.h"
@@ -100,8 +101,11 @@ addhstaiX (struct database_dyn *db, int
     no_more = __nss_database_lookup ("hosts", NULL,
 				     "dns [!UNAVAIL=return] files", &nip);
 
+  /* Initialize configurations.  */
+  if (__builtin_expect (!_res_hconf.initialized, 0))
+    _res_hconf_init ();
   if (__res_maybe_init (&_res, 0) == -1)
-	    no_more = 1;
+    no_more = 1;
 
   /* If we are looking for both IPv4 and IPv6 address we don't want
      the lookup functions to automatically promote IPv4 addresses to