diff --git a/nss/Makefile b/nss/Makefile
index d9f6d41..91b1c21 100644
--- a/nss/Makefile
+++ b/nss/Makefile
@@ -58,6 +58,11 @@ tests			= test-netdb test-digits-dots tst-nss-getpwent bug17079 \
 			  tst-nss-test5
 xtests			= bug-erange
 
+# Tests which need libdl
+ifeq (yes,$(build-shared))
+tests += tst-nss-files-hosts-erange
+endif
+
 # If we have a thread library then we can test cancellation against
 # some routines like getpwuid_r.
 ifeq (yes,$(have-thread-library))
@@ -154,3 +159,5 @@ $(patsubst %,$(objpfx)%.out,$(tests)) : \
 ifeq (yes,$(have-thread-library))
 $(objpfx)tst-cancel-getpwuid_r: $(shared-thread-library)
 endif
+
+$(objpfx)tst-nss-files-hosts-erange: $(libdl)
diff --git a/nss/tst-nss-files-hosts-erange.c b/nss/tst-nss-files-hosts-erange.c
new file mode 100644
index 0000000..beb7aa9
--- /dev/null
+++ b/nss/tst-nss-files-hosts-erange.c
@@ -0,0 +1,109 @@
+/* Parse /etc/hosts in multi mode with a trailing long line (bug 21915).
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+
+#include <dlfcn.h>
+#include <errno.h>
+#include <gnu/lib-names.h>
+#include <netdb.h>
+#include <nss.h>
+#include <support/check.h>
+#include <support/check_nss.h>
+#include <support/namespace.h>
+#include <support/test-driver.h>
+#include <support/xunistd.h>
+
+struct support_chroot *chroot_env;
+
+#define X10 "XXXXXXXXXX"
+#define X100 X10 X10 X10 X10 X10 X10 X10 X10 X10 X10
+#define X1000 X100 X100 X100 X100 X100 X100 X100 X100 X100 X100
+
+static void
+prepare (int argc, char **argv)
+{
+  chroot_env = support_chroot_create
+    ((struct support_chroot_configuration)
+     {
+       .resolv_conf = "",
+       .hosts =
+         "127.0.0.1   localhost localhost.localdomain\n"
+         "::1         localhost localhost.localdomain\n"
+         "192.0.2.1   example.com\n"
+         "#" X1000 X100 "\n",
+       .host_conf = "multi on\n",
+     });
+}
+
+static int
+do_test (void)
+{
+  support_become_root ();
+  if (!support_can_chroot ())
+    return EXIT_UNSUPPORTED;
+
+  __nss_configure_lookup ("hosts", "files");
+  if (dlopen (LIBNSS_FILES_SO, RTLD_LAZY) == NULL)
+    FAIL_EXIT1 ("could not load " LIBNSS_DNS_SO ": %s", dlerror ());
+
+  xchroot (chroot_env->path_chroot);
+
+  errno = ERANGE;
+  h_errno = NETDB_INTERNAL;
+  check_hostent ("gethostbyname example.com",
+                 gethostbyname ("example.com"),
+                 "name: example.com\n"
+                 "address: 192.0.2.1\n");
+  errno = ERANGE;
+  h_errno = NETDB_INTERNAL;
+  check_hostent ("gethostbyname2 AF_INET example.com",
+                 gethostbyname2 ("example.com", AF_INET),
+                 "name: example.com\n"
+                 "address: 192.0.2.1\n");
+  {
+    struct addrinfo hints =
+      {
+        .ai_family = AF_UNSPEC,
+        .ai_socktype = SOCK_STREAM,
+        .ai_protocol = IPPROTO_TCP,
+      };
+    errno = ERANGE;
+    h_errno = NETDB_INTERNAL;
+    struct addrinfo *ai;
+    int ret = getaddrinfo ("example.com", "80", &hints, &ai);
+    check_addrinfo ("example.com AF_UNSPEC", ai, ret,
+                    "address: STREAM/TCP 192.0.2.1 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+
+    hints.ai_family = AF_INET;
+    errno = ERANGE;
+    h_errno = NETDB_INTERNAL;
+    ret = getaddrinfo ("example.com", "80", &hints, &ai);
+    check_addrinfo ("example.com AF_INET", ai, ret,
+                    "address: STREAM/TCP 192.0.2.1 80\n");
+    if (ret == 0)
+      freeaddrinfo (ai);
+  }
+
+  support_chroot_free (chroot_env);
+  return 0;
+}
+
+#define PREPARE prepare
+#include <support/test-driver.c>
diff --git a/resolv/tst-resolv-basic.c b/resolv/tst-resolv-basic.c
index 64eedbb..66a0e8a 100644
--- a/resolv/tst-resolv-basic.c
+++ b/resolv/tst-resolv-basic.c
@@ -50,7 +50,7 @@ response (const struct resolv_response_context *ctx,
     qname_compare = qname + 2;
   else
     qname_compare = qname;
-  enum {www, alias, nxdomain, long_name} requested_qname;
+  enum {www, alias, nxdomain, long_name, nodata} requested_qname;
   if (strcmp (qname_compare, "www.example") == 0)
     requested_qname = www;
   else if (strcmp (qname_compare, "alias.example") == 0)
@@ -59,6 +59,8 @@ response (const struct resolv_response_context *ctx,
     requested_qname = nxdomain;
   else if (strcmp (qname_compare, LONG_NAME) == 0)
     requested_qname = long_name;
+  else if (strcmp (qname_compare, "nodata.example") == 0)
+    requested_qname = nodata;
   else
     {
       support_record_failure ();
@@ -87,6 +89,8 @@ response (const struct resolv_response_context *ctx,
       resolv_response_close_record (b);
       resolv_response_open_record (b, "www.example", qclass, qtype, 0);
       break;
+    case nodata:
+      return;
     case nxdomain:
       FAIL_EXIT1 ("unreachable");
     }
@@ -267,6 +271,55 @@ test_bug_21295 (void)
     }
 }
 
+/* Run tests which do not expect any data.  */
+static void
+test_nodata_nxdomain (void)
+{
+  /* Iterate through different address families.  */
+  int families[] = { AF_UNSPEC, AF_INET, AF_INET6, -1 };
+  for (int i = 0; families[i] >= 0; ++i)
+    /* If do_tcp, prepend "t." to the name to trigger TCP
+       fallback.  */
+    for (int do_tcp = 0; do_tcp < 2; ++do_tcp)
+      /* If do_nxdomain, trigger an NXDOMAIN error (DNS failure),
+         otherwise use a NODATA response (empty but successful
+         answer).  */
+      for (int do_nxdomain = 0; do_nxdomain < 2; ++do_nxdomain)
+        {
+          int family = families[i];
+          char *name = xasprintf ("%s%s.example",
+                                  do_tcp ? "t." : "",
+                                  do_nxdomain ? "nxdomain" : "nodata");
+
+          if (family != AF_UNSPEC)
+            {
+              if (do_nxdomain)
+                check_h (name, family, "error: HOST_NOT_FOUND\n");
+              else
+                check_h (name, family, "error: NO_ADDRESS\n");
+            }
+
+          const char *expected;
+          if (do_nxdomain)
+            expected = "error: Name or service not known\n";
+          else
+            expected = "error: No address associated with hostname\n";
+
+          check_ai (name, "80", family, expected);
+
+          struct addrinfo hints =
+            {
+              .ai_family = family,
+              .ai_flags = AI_V4MAPPED | AI_ALL,
+            };
+          check_ai_hints (name, "80", hints, expected);
+          hints.ai_flags |= AI_CANONNAME;
+          check_ai_hints (name, "80", hints, expected);
+
+          free (name);
+        }
+}
+
 static int
 do_test (void)
 {
@@ -439,29 +492,8 @@ do_test (void)
             "address: DGRAM/UDP 2001:db8::4 80\n"
             "address: RAW/IP 2001:db8::4 80\n");
 
-  check_h ("nxdomain.example", AF_INET,
-           "error: HOST_NOT_FOUND\n");
-  check_h ("nxdomain.example", AF_INET6,
-           "error: HOST_NOT_FOUND\n");
-  check_ai ("nxdomain.example", "80", AF_UNSPEC,
-            "error: Name or service not known\n");
-  check_ai ("nxdomain.example", "80", AF_INET,
-            "error: Name or service not known\n");
-  check_ai ("nxdomain.example", "80", AF_INET6,
-            "error: Name or service not known\n");
-
-  check_h ("t.nxdomain.example", AF_INET,
-           "error: HOST_NOT_FOUND\n");
-  check_h ("t.nxdomain.example", AF_INET6,
-           "error: HOST_NOT_FOUND\n");
-  check_ai ("t.nxdomain.example", "80", AF_UNSPEC,
-            "error: Name or service not known\n");
-  check_ai ("t.nxdomain.example", "80", AF_INET,
-            "error: Name or service not known\n");
-  check_ai ("t.nxdomain.example", "80", AF_INET6,
-            "error: Name or service not known\n");
-
   test_bug_21295 ();
+  test_nodata_nxdomain ();
 
   resolv_test_end (aux);
 
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index 0cf87c2..2c4b6d6 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -242,28 +242,26 @@ convert_hostent_to_gaih_addrtuple (const struct addrinfo *req,
 #define gethosts(_family, _type) \
  {									      \
   struct hostent th;							      \
-  struct hostent *h;							      \
   char *localcanon = NULL;						      \
   no_data = 0;								      \
-  while (1) {								      \
-    status = DL_CALL_FCT (fct, (name, _family, &th,			      \
-				tmpbuf->data, tmpbuf->length,		      \
-				&errno, &h_errno, NULL, &localcanon));	      \
-    if (errno != ERANGE || h_errno != NETDB_INTERNAL)			      \
-      break;								      \
-    if (!scratch_buffer_grow (tmpbuf))					      \
-      {									      \
-	__resolv_context_enable_inet6 (res_ctx, res_enable_inet6);	      \
-	__resolv_context_put (res_ctx);					      \
-	result = -EAI_MEMORY;						      \
-	goto free_and_return;						      \
-      }									      \
-  }									      \
-  if (status == NSS_STATUS_SUCCESS && errno == 0)			      \
-    h = &th;								      \
-  else									      \
-    h = NULL;								      \
-  if (errno != 0)							      \
+  while (1)								      \
+    {									      \
+      status = DL_CALL_FCT (fct, (name, _family, &th,			      \
+				  tmpbuf->data, tmpbuf->length,		      \
+				  &errno, &h_errno, NULL, &localcanon));      \
+      if (status != NSS_STATUS_TRYAGAIN || h_errno != NETDB_INTERNAL	      \
+	  || errno != ERANGE)						      \
+	break;								      \
+      if (!scratch_buffer_grow (tmpbuf))				      \
+	{								      \
+	  __resolv_context_enable_inet6 (res_ctx, res_enable_inet6);	      \
+	  __resolv_context_put (res_ctx);				      \
+	  result = -EAI_MEMORY;						      \
+	  goto free_and_return;						      \
+	}								      \
+    }									      \
+  if (status == NSS_STATUS_NOTFOUND					      \
+      || status == NSS_STATUS_TRYAGAIN || status == NSS_STATUS_UNAVAIL)	      \
     {									      \
       if (h_errno == NETDB_INTERNAL)					      \
 	{								      \
@@ -277,9 +275,9 @@ convert_hostent_to_gaih_addrtuple (const struct addrinfo *req,
       else								      \
 	no_data = h_errno == NO_DATA;					      \
     }									      \
-  else if (h != NULL)							      \
+  else if (status == NSS_STATUS_SUCCESS)				      \
     {									      \
-      if (!convert_hostent_to_gaih_addrtuple (req, _family,h, &addrmem))      \
+      if (!convert_hostent_to_gaih_addrtuple (req, _family, &th, &addrmem))   \
 	{								      \
 	  __resolv_context_enable_inet6 (res_ctx, res_enable_inet6);	      \
 	  __resolv_context_put (res_ctx);				      \
