commit b1e7c13cc58572600809d5173fed2c00c38af2e7
Author: Florian Weimer <fweimer@redhat.com>
Date:   Fri Jun 23 17:52:55 2017 +0200

    resolv: Clean up declarations of the __res_initstamp variable

diff --git a/resolv/res_init.c b/resolv/res_init.c
index ed5a4d4804a792de..9aa907ee199f01a6 100644
--- a/resolv/res_init.c
+++ b/resolv/res_init.c
@@ -105,7 +105,7 @@
 static void res_setoptions (res_state, const char *, const char *);
 static uint32_t net_mask (struct in_addr);
 
-unsigned long long int __res_initstamp attribute_hidden;
+unsigned long long int __res_initstamp;
 
 int
 res_ninit (res_state statp)
diff --git a/resolv/res_libc.c b/resolv/res_libc.c
index 3ef885762e890a40..5202b756ff17518a 100644
--- a/resolv/res_libc.c
+++ b/resolv/res_libc.c
@@ -25,8 +25,8 @@
 #include <arpa/nameser.h>
 #include <resolv.h>
 #include <libc-lock.h>
+#include <resolv-internal.h>
 
-extern unsigned long long int __res_initstamp attribute_hidden;
 /* We have atomic increment operations on 64-bit platforms.  */
 #if __WORDSIZE == 64
 # define atomicinclock(lock) (void) 0
diff --git a/resolv/resolv-internal.h b/resolv/resolv-internal.h
index 9afaa07d8b03d31f..5a9faf8de975f316 100644
--- a/resolv/resolv-internal.h
+++ b/resolv/resolv-internal.h
@@ -65,4 +65,7 @@ int __res_nopt (res_state, int n0, unsigned char *buf, int buflen,
 int __inet_pton_length (int af, const char *src, size_t srclen, void *);
 libc_hidden_proto (__inet_pton_length)
 
+/* Used to propagate the effect of res_init calls across threads.  */
+extern unsigned long long int __res_initstamp attribute_hidden;
+
 #endif  /* _RESOLV_INTERNAL_H */