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commit 44f28da7cab271b659551c4fe1a7d2e420803576
Author: Florian Weimer <fweimer@redhat.com>
Date:   Tue Apr 4 14:36:02 2017 +0200

    nss_dns: Replace local declarations with declarations from a header file

diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h
index cd7ab6e925b25687..7a8290e1f26070e0 100644
--- a/include/arpa/nameser.h
+++ b/include/arpa/nameser.h
@@ -51,6 +51,9 @@ extern const struct _ns_flagdata _ns_flagdata[] attribute_hidden;
 
 extern unsigned int	__ns_get16 (const unsigned char *) __THROW;
 extern unsigned long	__ns_get32 (const unsigned char *) __THROW;
+int __ns_name_ntop (const unsigned char *, char *, size_t) __THROW;
+int __ns_name_unpack (const unsigned char *, const unsigned char *,
+		      const unsigned char *, unsigned char *, size_t) __THROW;
 
 #define ns_msg_getflag(handle, flag) \
   (((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift)
diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index 01864dc96e639873..705b3c9c078c41bf 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -80,6 +80,7 @@
 #include <string.h>
 
 #include "nsswitch.h"
+#include <arpa/nameser.h>
 
 /* Get implementeation for some internal functions.  */
 #include <resolv/resolv-internal.h>
@@ -106,13 +107,6 @@ typedef union querybuf
   u_char buf[MAXPACKET];
 } querybuf;
 
-/* These functions are defined in res_comp.c.  */
-#define NS_MAXCDNAME	255	/* maximum compressed domain name */
-extern int __ns_name_ntop (const u_char *, char *, size_t);
-extern int __ns_name_unpack (const u_char *, const u_char *,
-			     const u_char *, u_char *, size_t);
-
-
 static enum nss_status getanswer_r (const querybuf *answer, int anslen,
 				    const char *qname, int qtype,
 				    struct hostent *result, char *buffer,
diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c
index fd8c5656c0cedd27..2be72d33a30f917e 100644
--- a/resolv/nss_dns/dns-network.c
+++ b/resolv/nss_dns/dns-network.c
@@ -66,6 +66,7 @@
 
 #include "nsswitch.h"
 #include <arpa/inet.h>
+#include <arpa/nameser.h>
 
 /* Maximum number of aliases we allow.  */
 #define MAX_NR_ALIASES	48
@@ -92,13 +93,6 @@ typedef union querybuf
   u_char buf[MAXPACKET];
 } querybuf;
 
-/* These functions are defined in res_comp.c.  */
-#define NS_MAXCDNAME	255	/* maximum compressed domain name */
-extern int __ns_name_ntop (const u_char *, char *, size_t) __THROW;
-extern int __ns_name_unpack (const u_char *, const u_char *,
-			     const u_char *, u_char *, size_t) __THROW;
-
-
 /* Prototypes for local functions.  */
 static enum nss_status getanswer_r (const querybuf *answer, int anslen,
 				    struct netent *result, char *buffer,