resolv: Move dn_comp to its own file and into libc

And reformat it to GNU style.

dn_comp is used in various programs, so keep it as a non-deprecated
symbol.  Switch to dn_comp (not __dn_comp) for the ABI name.  There
are no internal users, so interposition is not a problem.

The __dn_comp symbol was moved with scripts/move-symbol-to-libc.py
--no-new-version.  dn_comp@@GLIBC_2.34 was added with
make update-all-abi.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>

70 files changed, 172 insertions, 49 deletions

diff --git a/include/resolv.h b/include/resolv.h
index 44fc0c346f..602f184643 100644
--- a/include/resolv.h
+++ b/include/resolv.h
@@ -44,7 +44,6 @@ libresolv_hidden_proto (_sethtent)
 libresolv_hidden_proto (_gethtent)
 libresolv_hidden_proto (_gethtbyaddr)
 libresolv_hidden_proto (_gethtbyname2)
-libresolv_hidden_proto (__dn_comp)
 libresolv_hidden_proto (__dn_skipname)
 libresolv_hidden_proto (__res_hnok)
 libresolv_hidden_proto (__res_dnok)
diff --git a/resolv/Makefile b/resolv/Makefile
index 07cac54d3a..936518523d 100644
--- a/resolv/Makefile
+++ b/resolv/Makefile
@@ -28,6 +28,7 @@ headers	:= resolv.h bits/types/res_state.h \
 	   sys/bitypes.h
 
 routines := \
+  dn_comp \
   dn_expand \
   herror \
   inet_addr \
diff --git a/resolv/Versions b/resolv/Versions
index 4a9203042f..e36cf45cfa 100644
--- a/resolv/Versions
+++ b/resolv/Versions
@@ -1,5 +1,6 @@
 libc {
   GLIBC_2.0 {
+    __dn_comp;
     __h_errno_location;
     __res_randomid;
     _res;
@@ -42,6 +43,7 @@ libc {
     gai_suspend;
     getaddrinfo_a;
 %endif
+    dn_comp;
     dn_expand;
     ns_name_compress;
     ns_name_ntop;
@@ -79,7 +81,6 @@ libresolv {
   GLIBC_2.0 {
     __b64_ntop;
     __b64_pton;
-    __dn_comp;
     __dn_count_labels;
     __dn_skipname;
     __fp_nquery;
diff --git a/resolv/dn_comp.c b/resolv/dn_comp.c
new file mode 100644
index 0000000000..4506a628ac
--- /dev/null
+++ b/resolv/dn_comp.c
@@ -0,0 +1,103 @@
+/* Compressing a DNS domain name from presentation form to wire format.
+   Copyright (C) 1995-2021 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
+   <https://www.gnu.org/licenses/>.  */
+
+/*
+ * Copyright (c) 1985, 1993
+ *    The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+/*
+ * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+#include <arpa/nameser.h>
+#include <resolv.h>
+
+/* Packs domain name SRC in presentation form into DST.  Returns the
+   size of the compressed name or -1.  DSTSIZ is the size of the array
+   pointed to by COMPDN.  */
+int
+___dn_comp (const char *src, unsigned char *dst, int dstsiz,
+            unsigned char **dnptrs, unsigned char **lastdnptr)
+{
+  return __ns_name_compress (src, dst, (size_t) dstsiz,
+                             (const unsigned char **) dnptrs,
+                             (const unsigned char **) lastdnptr);
+}
+versioned_symbol (libc, ___dn_comp, dn_comp, GLIBC_2_34);
+
+#if OTHER_SHLIB_COMPAT (libresolv, GLIBC_2_0, GLIBC_2_34)
+compat_symbol (libresolv, ___dn_comp, __dn_comp, GLIBC_2_0);
+#endif
diff --git a/resolv/res_comp.c b/resolv/res_comp.c
index 80faea7e5e..1930f17302 100644
--- a/resolv/res_comp.c
+++ b/resolv/res_comp.c
@@ -93,21 +93,6 @@
 #include <unistd.h>
 
 /*
- * Pack domain name 'exp_dn' in presentation form into 'comp_dn'.
- * Return the size of the compressed name or -1.
- * 'length' is the size of the array pointed to by 'comp_dn'.
- */
-int
-dn_comp(const char *src, u_char *dst, int dstsiz,
-	u_char **dnptrs, u_char **lastdnptr)
-{
-	return (ns_name_compress(src, dst, (size_t)dstsiz,
-				 (const u_char **)dnptrs,
-				 (const u_char **)lastdnptr));
-}
-libresolv_hidden_def (dn_comp)
-
-/*
  * Skip over a compressed domain name. Return the size or -1.
  */
 int
diff --git a/resolv/resolv.h b/resolv/resolv.h
index 7232d81a3b..0e91801e5f 100644
--- a/resolv/resolv.h
+++ b/resolv/resolv.h
@@ -210,7 +210,6 @@ __END_DECLS
 
 #define b64_ntop		__b64_ntop
 #define b64_pton		__b64_pton
-#define dn_comp			__dn_comp
 #define dn_count_labels		__dn_count_labels
 #define dn_skipname		__dn_skipname
 #define fp_resstat		__fp_resstat
diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
index 626ac8a248..cb1af9e5b0 100644
--- a/sysdeps/mach/hurd/i386/libc.abilist
+++ b/sysdeps/mach/hurd/i386/libc.abilist
@@ -244,6 +244,7 @@ GLIBC_2.2.6 __dcgettext F
 GLIBC_2.2.6 __default_morecore F
 GLIBC_2.2.6 __dgettext F
 GLIBC_2.2.6 __divdi3 F
+GLIBC_2.2.6 __dn_comp F
 GLIBC_2.2.6 __dn_expand F
 GLIBC_2.2.6 __dup2 F
 GLIBC_2.2.6 __duplocale F
@@ -2236,6 +2237,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/mach/hurd/i386/libresolv.abilist b/sysdeps/mach/hurd/i386/libresolv.abilist
index 85460b7747..0132f6cef2 100644
--- a/sysdeps/mach/hurd/i386/libresolv.abilist
+++ b/sysdeps/mach/hurd/i386/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.2.6 __b64_ntop F
 GLIBC_2.2.6 __b64_pton F
-GLIBC_2.2.6 __dn_comp F
 GLIBC_2.2.6 __dn_count_labels F
 GLIBC_2.2.6 __dn_skipname F
 GLIBC_2.2.6 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index 2165aff042..60b98210e1 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -166,6 +166,7 @@ GLIBC_2.17 __daylight D 0x4
 GLIBC_2.17 __dcgettext F
 GLIBC_2.17 __default_morecore F
 GLIBC_2.17 __dgettext F
+GLIBC_2.17 __dn_comp F
 GLIBC_2.17 __dn_expand F
 GLIBC_2.17 __dprintf_chk F
 GLIBC_2.17 __dup2 F
@@ -2432,6 +2433,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/aarch64/libresolv.abilist b/sysdeps/unix/sysv/linux/aarch64/libresolv.abilist
index 4edce71c8e..50019b9bdd 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.17 __b64_ntop F
 GLIBC_2.17 __b64_pton F
-GLIBC_2.17 __dn_comp F
 GLIBC_2.17 __dn_count_labels F
 GLIBC_2.17 __dn_skipname F
 GLIBC_2.17 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index 8be569206d..ccf9603926 100644
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -124,6 +124,7 @@ GLIBC_2.0 __divl F
 GLIBC_2.0 __divlu F
 GLIBC_2.0 __divq F
 GLIBC_2.0 __divqu F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x8
 GLIBC_2.0 __errno_location F
@@ -2525,6 +2526,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/alpha/libresolv.abilist b/sysdeps/unix/sysv/linux/alpha/libresolv.abilist
index a788ff35b1..cee6c22004 100644
--- a/sysdeps/unix/sysv/linux/alpha/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index fbcc456d1b..b7336e1aad 100644
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -166,6 +166,7 @@ GLIBC_2.32 __daylight D 0x4
 GLIBC_2.32 __dcgettext F
 GLIBC_2.32 __default_morecore F
 GLIBC_2.32 __dgettext F
+GLIBC_2.32 __dn_comp F
 GLIBC_2.32 __dn_expand F
 GLIBC_2.32 __dprintf_chk F
 GLIBC_2.32 __dup2 F
@@ -2191,6 +2192,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/arc/libresolv.abilist b/sysdeps/unix/sysv/linux/arc/libresolv.abilist
index 5c8e451dc7..f9326b9b22 100644
--- a/sysdeps/unix/sysv/linux/arc/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.32 __b64_ntop F
 GLIBC_2.32 __b64_pton F
-GLIBC_2.32 __dn_comp F
 GLIBC_2.32 __dn_count_labels F
 GLIBC_2.32 __dn_skipname F
 GLIBC_2.32 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index 9d344d5a02..4a709a3a7c 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -317,6 +317,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
@@ -649,6 +650,7 @@ GLIBC_2.4 __daylight D 0x4
 GLIBC_2.4 __dcgettext F
 GLIBC_2.4 __default_morecore F
 GLIBC_2.4 __dgettext F
+GLIBC_2.4 __dn_comp F
 GLIBC_2.4 __dn_expand F
 GLIBC_2.4 __dup2 F
 GLIBC_2.4 __duplocale F
diff --git a/sysdeps/unix/sysv/linux/arm/be/libresolv.abilist b/sysdeps/unix/sysv/linux/arm/be/libresolv.abilist
index 1049155010..e67eec5b80 100644
--- a/sysdeps/unix/sysv/linux/arm/be/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.4 __b64_ntop F
 GLIBC_2.4 __b64_pton F
-GLIBC_2.4 __dn_comp F
 GLIBC_2.4 __dn_count_labels F
 GLIBC_2.4 __dn_skipname F
 GLIBC_2.4 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index 9f0e945a58..78248cf8a5 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -314,6 +314,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
@@ -646,6 +647,7 @@ GLIBC_2.4 __daylight D 0x4
 GLIBC_2.4 __dcgettext F
 GLIBC_2.4 __default_morecore F
 GLIBC_2.4 __dgettext F
+GLIBC_2.4 __dn_comp F
 GLIBC_2.4 __dn_expand F
 GLIBC_2.4 __dup2 F
 GLIBC_2.4 __duplocale F
diff --git a/sysdeps/unix/sysv/linux/arm/le/libresolv.abilist b/sysdeps/unix/sysv/linux/arm/le/libresolv.abilist
index 1049155010..e67eec5b80 100644
--- a/sysdeps/unix/sysv/linux/arm/le/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.4 __b64_ntop F
 GLIBC_2.4 __b64_pton F
-GLIBC_2.4 __dn_comp F
 GLIBC_2.4 __dn_count_labels F
 GLIBC_2.4 __dn_skipname F
 GLIBC_2.4 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 03e87f4992..4166d5599a 100644
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -166,6 +166,7 @@ GLIBC_2.29 __daylight D 0x4
 GLIBC_2.29 __dcgettext F
 GLIBC_2.29 __default_morecore F
 GLIBC_2.29 __dgettext F
+GLIBC_2.29 __dn_comp F
 GLIBC_2.29 __dn_expand F
 GLIBC_2.29 __dprintf_chk F
 GLIBC_2.29 __dup2 F
@@ -2457,6 +2458,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/csky/libresolv.abilist b/sysdeps/unix/sysv/linux/csky/libresolv.abilist
index 07cc06fe36..798af0930d 100644
--- a/sysdeps/unix/sysv/linux/csky/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.29 __b64_ntop F
 GLIBC_2.29 __b64_pton F
-GLIBC_2.29 __dn_comp F
 GLIBC_2.29 __dn_count_labels F
 GLIBC_2.29 __dn_skipname F
 GLIBC_2.29 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index cc40154371..b0b618ab09 100644
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -1,3 +1,4 @@
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 dladdr F
 GLIBC_2.0 dlclose F
 GLIBC_2.0 dlerror F
@@ -2404,6 +2405,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/hppa/libresolv.abilist b/sysdeps/unix/sysv/linux/hppa/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/hppa/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 23b132bfa4..0562ab901f 100644
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -122,6 +122,7 @@ GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
 GLIBC_2.0 __divdi3 F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2588,6 +2589,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/i386/libresolv.abilist b/sysdeps/unix/sysv/linux/i386/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/i386/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index fcb77704c1..25c6d8ffe8 100644
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -1,3 +1,4 @@
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 dladdr F
 GLIBC_2.0 dlclose F
 GLIBC_2.0 dlerror F
@@ -2363,6 +2364,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/ia64/libresolv.abilist b/sysdeps/unix/sysv/linux/ia64/libresolv.abilist
index a788ff35b1..cee6c22004 100644
--- a/sysdeps/unix/sysv/linux/ia64/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 4b245f0e64..46f111a975 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -318,6 +318,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
@@ -635,6 +636,7 @@ GLIBC_2.4 __dcgettext F
 GLIBC_2.4 __default_morecore F
 GLIBC_2.4 __dgettext F
 GLIBC_2.4 __divdi3 F
+GLIBC_2.4 __dn_comp F
 GLIBC_2.4 __dn_expand F
 GLIBC_2.4 __dup2 F
 GLIBC_2.4 __duplocale F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libresolv.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libresolv.abilist
index 1049155010..e67eec5b80 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.4 __b64_ntop F
 GLIBC_2.4 __b64_pton F
-GLIBC_2.4 __dn_comp F
 GLIBC_2.4 __dn_count_labels F
 GLIBC_2.4 __dn_skipname F
 GLIBC_2.4 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index 85936bd042..16fc902d74 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -122,6 +122,7 @@ GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
 GLIBC_2.0 __divdi3 F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2531,6 +2532,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libresolv.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index 25115b3026..afcd92b1aa 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -167,6 +167,7 @@ GLIBC_2.18 __daylight D 0x4
 GLIBC_2.18 __dcgettext F
 GLIBC_2.18 __default_morecore F
 GLIBC_2.18 __dgettext F
+GLIBC_2.18 __dn_comp F
 GLIBC_2.18 __dn_expand F
 GLIBC_2.18 __dprintf_chk F
 GLIBC_2.18 __dup2 F
@@ -2508,6 +2509,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libresolv.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libresolv.abilist
index 38aa97d106..b7206367f8 100644
--- a/sysdeps/unix/sysv/linux/microblaze/be/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.18 __b64_ntop F
 GLIBC_2.18 __b64_pton F
-GLIBC_2.18 __dn_comp F
 GLIBC_2.18 __dn_count_labels F
 GLIBC_2.18 __dn_skipname F
 GLIBC_2.18 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index 8e39d26d88..234b8b388a 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -167,6 +167,7 @@ GLIBC_2.18 __daylight D 0x4
 GLIBC_2.18 __dcgettext F
 GLIBC_2.18 __default_morecore F
 GLIBC_2.18 __dgettext F
+GLIBC_2.18 __dn_comp F
 GLIBC_2.18 __dn_expand F
 GLIBC_2.18 __dprintf_chk F
 GLIBC_2.18 __dup2 F
@@ -2505,6 +2506,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libresolv.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libresolv.abilist
index 38aa97d106..b7206367f8 100644
--- a/sysdeps/unix/sysv/linux/microblaze/le/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.18 __b64_ntop F
 GLIBC_2.18 __b64_pton F
-GLIBC_2.18 __dn_comp F
 GLIBC_2.18 __dn_count_labels F
 GLIBC_2.18 __dn_skipname F
 GLIBC_2.18 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index 70e42c327a..d85461c661 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -121,6 +121,7 @@ GLIBC_2.0 __default_morecore F
 GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2496,6 +2497,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/libresolv.abilist b/sysdeps/unix/sysv/linux/mips/mips32/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index bd532f7688..57a34442f7 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -121,6 +121,7 @@ GLIBC_2.0 __default_morecore F
 GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2494,6 +2495,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index 265fb8b34b..08529e2816 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -121,6 +121,7 @@ GLIBC_2.0 __default_morecore F
 GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2502,6 +2503,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libresolv.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 8f1764d134..3c1ceaa78c 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -121,6 +121,7 @@ GLIBC_2.0 __default_morecore F
 GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x8
 GLIBC_2.0 __errno_location F
@@ -2414,6 +2415,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libresolv.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libresolv.abilist
index a788ff35b1..cee6c22004 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index 477e668aac..c91eec1a23 100644
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -171,6 +171,7 @@ GLIBC_2.21 __default_morecore F
 GLIBC_2.21 __dgettext F
 GLIBC_2.21 __divdf3 F
 GLIBC_2.21 __divsf3 F
+GLIBC_2.21 __dn_comp F
 GLIBC_2.21 __dn_expand F
 GLIBC_2.21 __dprintf_chk F
 GLIBC_2.21 __dup2 F
@@ -2547,6 +2548,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/nios2/libresolv.abilist b/sysdeps/unix/sysv/linux/nios2/libresolv.abilist
index 9a65f29b20..9f7f9db8a9 100644
--- a/sysdeps/unix/sysv/linux/nios2/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.21 __b64_ntop F
 GLIBC_2.21 __b64_pton F
-GLIBC_2.21 __dn_comp F
 GLIBC_2.21 __dn_count_labels F
 GLIBC_2.21 __dn_skipname F
 GLIBC_2.21 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index a2966bf605..213631f60b 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -124,6 +124,7 @@ GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
 GLIBC_2.0 __divdi3 F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2558,6 +2559,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index 26408a32b4..cc4e53c759 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -124,6 +124,7 @@ GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
 GLIBC_2.0 __divdi3 F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2591,6 +2592,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index 7e8d35172f..487d109435 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -318,6 +318,7 @@ GLIBC_2.3 __daylight D 0x4
 GLIBC_2.3 __dcgettext F
 GLIBC_2.3 __default_morecore F
 GLIBC_2.3 __dgettext F
+GLIBC_2.3 __dn_comp F
 GLIBC_2.3 __dn_expand F
 GLIBC_2.3 __dup2 F
 GLIBC_2.3 __duplocale F
@@ -2326,6 +2327,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist
index 213741bba9..72f9b070d8 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.3 __b64_ntop F
 GLIBC_2.3 __b64_pton F
-GLIBC_2.3 __dn_comp F
 GLIBC_2.3 __dn_count_labels F
 GLIBC_2.3 __dn_skipname F
 GLIBC_2.3 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index a7db5a8081..bf5ad293b6 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -165,6 +165,7 @@ GLIBC_2.17 __daylight D 0x4
 GLIBC_2.17 __dcgettext F
 GLIBC_2.17 __default_morecore F
 GLIBC_2.17 __dgettext F
+GLIBC_2.17 __dn_comp F
 GLIBC_2.17 __dn_expand F
 GLIBC_2.17 __dprintf_chk F
 GLIBC_2.17 __dup2 F
@@ -2628,6 +2629,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist
index 4edce71c8e..50019b9bdd 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.17 __b64_ntop F
 GLIBC_2.17 __b64_pton F
-GLIBC_2.17 __dn_comp F
 GLIBC_2.17 __dn_count_labels F
 GLIBC_2.17 __dn_skipname F
 GLIBC_2.17 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 2a30081b45..9cc70cced6 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -166,6 +166,7 @@ GLIBC_2.33 __daylight D 0x4
 GLIBC_2.33 __dcgettext F
 GLIBC_2.33 __default_morecore F
 GLIBC_2.33 __dgettext F
+GLIBC_2.33 __dn_comp F
 GLIBC_2.33 __dn_expand F
 GLIBC_2.33 __dprintf_chk F
 GLIBC_2.33 __dup2 F
@@ -2193,6 +2194,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist
index 349ca1ddbb..5956461241 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.33 __b64_ntop F
 GLIBC_2.33 __b64_pton F
-GLIBC_2.33 __dn_comp F
 GLIBC_2.33 __dn_count_labels F
 GLIBC_2.33 __dn_skipname F
 GLIBC_2.33 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index a92aec2885..9d1c6c20fe 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -167,6 +167,7 @@ GLIBC_2.27 __daylight D 0x4
 GLIBC_2.27 __dcgettext F
 GLIBC_2.27 __default_morecore F
 GLIBC_2.27 __dgettext F
+GLIBC_2.27 __dn_comp F
 GLIBC_2.27 __dn_expand F
 GLIBC_2.27 __dprintf_chk F
 GLIBC_2.27 __dup2 F
@@ -2393,6 +2394,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist
index 470e635d24..db984b40af 100644
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.27 __b64_ntop F
 GLIBC_2.27 __b64_pton F
-GLIBC_2.27 __dn_comp F
 GLIBC_2.27 __dn_count_labels F
 GLIBC_2.27 __dn_skipname F
 GLIBC_2.27 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index 7d6878ec4d..7efc7e2328 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -122,6 +122,7 @@ GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
 GLIBC_2.0 __divdi3 F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2556,6 +2557,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libresolv.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 5a84bfe5fd..b2773db2c4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -260,6 +260,7 @@ GLIBC_2.2 __default_morecore F
 GLIBC_2.2 __deregister_frame F
 GLIBC_2.2 __deregister_frame_info F
 GLIBC_2.2 __dgettext F
+GLIBC_2.2 __dn_comp F
 GLIBC_2.2 __dn_expand F
 GLIBC_2.2 __dup2 F
 GLIBC_2.2 __duplocale F
@@ -2363,6 +2364,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libresolv.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libresolv.abilist
index dd96d28ed9..e3ed8ccd8e 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.2 __b64_ntop F
 GLIBC_2.2 __b64_pton F
-GLIBC_2.2 __dn_comp F
 GLIBC_2.2 __dn_count_labels F
 GLIBC_2.2 __dn_skipname F
 GLIBC_2.2 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index cabb25e831..d9a12026b4 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2,6 +2,7 @@ GCC_3.0 _Unwind_Find_FDE F
 GCC_3.0 __deregister_frame_info_bases F
 GCC_3.0 __register_frame_info_bases F
 GCC_3.0 __register_frame_info_table_bases F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 dladdr F
 GLIBC_2.0 dlclose F
 GLIBC_2.0 dlerror F
@@ -2411,6 +2412,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/sh/be/libresolv.abilist b/sysdeps/unix/sysv/linux/sh/be/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/sh/be/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index d32bc7cfcf..db49075925 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2,6 +2,7 @@ GCC_3.0 _Unwind_Find_FDE F
 GCC_3.0 __deregister_frame_info_bases F
 GCC_3.0 __register_frame_info_bases F
 GCC_3.0 __register_frame_info_table_bases F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 dladdr F
 GLIBC_2.0 dlclose F
 GLIBC_2.0 dlerror F
@@ -2408,6 +2409,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/sh/le/libresolv.abilist b/sysdeps/unix/sysv/linux/sh/le/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/sh/le/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index d40efb1cb4..06195031b6 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -127,6 +127,7 @@ GLIBC_2.0 __default_morecore F
 GLIBC_2.0 __deregister_frame F
 GLIBC_2.0 __deregister_frame_info F
 GLIBC_2.0 __dgettext F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dup2 F
 GLIBC_2.0 __environ D 0x4
 GLIBC_2.0 __errno_location F
@@ -2551,6 +2552,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libresolv.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libresolv.abilist
index 1bcda7408c..8ee174124c 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index ebe5d8719c..bc0428fe2a 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2,6 +2,7 @@ GCC_3.0 _Unwind_Find_FDE F
 GCC_3.0 __deregister_frame_info_bases F
 GCC_3.0 __register_frame_info_bases F
 GCC_3.0 __register_frame_info_table_bases F
+GLIBC_2.0 __dn_comp F
 GLIBC_2.0 dladdr F
 GLIBC_2.0 dlclose F
 GLIBC_2.0 dlerror F
@@ -2386,6 +2387,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libresolv.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libresolv.abilist
index a788ff35b1..cee6c22004 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.0 __b64_ntop F
 GLIBC_2.0 __b64_pton F
-GLIBC_2.0 __dn_comp F
 GLIBC_2.0 __dn_count_labels F
 GLIBC_2.0 __dn_skipname F
 GLIBC_2.0 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index ea06d56c39..c91a47da4c 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -248,6 +248,7 @@ GLIBC_2.2.5 __daylight D 0x4
 GLIBC_2.2.5 __dcgettext F
 GLIBC_2.2.5 __default_morecore F
 GLIBC_2.2.5 __dgettext F
+GLIBC_2.2.5 __dn_comp F
 GLIBC_2.2.5 __dn_expand F
 GLIBC_2.2.5 __dup2 F
 GLIBC_2.2.5 __duplocale F
@@ -2341,6 +2342,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libresolv.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libresolv.abilist
index b82c0c212e..640facbd02 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.2.5 __b64_ntop F
 GLIBC_2.2.5 __b64_pton F
-GLIBC_2.2.5 __dn_comp F
 GLIBC_2.2.5 __dn_count_labels F
 GLIBC_2.2.5 __dn_skipname F
 GLIBC_2.2.5 __fp_nquery F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 5c5110c425..7bad9379c5 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -166,6 +166,7 @@ GLIBC_2.16 __daylight D 0x4
 GLIBC_2.16 __dcgettext F
 GLIBC_2.16 __default_morecore F
 GLIBC_2.16 __dgettext F
+GLIBC_2.16 __dn_comp F
 GLIBC_2.16 __dn_expand F
 GLIBC_2.16 __dprintf_chk F
 GLIBC_2.16 __dup2 F
@@ -2447,6 +2448,7 @@ GLIBC_2.34 dlmopen F
 GLIBC_2.34 dlopen F
 GLIBC_2.34 dlsym F
 GLIBC_2.34 dlvsym F
+GLIBC_2.34 dn_comp F
 GLIBC_2.34 dn_expand F
 GLIBC_2.34 execveat F
 GLIBC_2.34 forkpty F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libresolv.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libresolv.abilist
index 20574620f8..6990240c4e 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libresolv.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libresolv.abilist
@@ -1,6 +1,5 @@
 GLIBC_2.16 __b64_ntop F
 GLIBC_2.16 __b64_pton F
-GLIBC_2.16 __dn_comp F
 GLIBC_2.16 __dn_count_labels F
 GLIBC_2.16 __dn_skipname F
 GLIBC_2.16 __fp_nquery F