[glibc/azanella/clang] socket: Use internal alias for __cmsg_nxthdr

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ae9ae18ff9bc3168917cd7b26c2ad3335aec6ba8

commit ae9ae18ff9bc3168917cd7b26c2ad3335aec6ba8
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu Mar 17 08:16:41 2022 -0300

    socket: Use internal alias for __cmsg_nxthdr

Diff:
---
 include/sys/socket.h                  | 4 ++++
 sysdeps/unix/sysv/linux/cmsg_nxthdr.c | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/sys/socket.h b/include/sys/socket.h
index f2525f4f3e..e3d855fab0 100644
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -174,5 +174,9 @@ extern void __convert_scm_timestamps (struct msghdr *msg, socklen_t msgsize)
      attribute_hidden;
 #endif
 
+#undef CMSG_NXTHDR
+#define CMSG_NXTHDR(mhdr, cmsg) __libc_cmsg_nxthdr (mhdr, cmsg)
+hidden_proto2 (__cmsg_nxthdr, __libc_cmsg_nxthdr)
+
 #endif
 #endif
diff --git a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
index f3f5389b74..5d21ca7224 100644
--- a/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
+++ b/sysdeps/unix/sysv/linux/cmsg_nxthdr.c
@@ -21,7 +21,7 @@
 
 
 struct cmsghdr *
-__cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg)
+__libc_cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg)
 {
   if ((size_t) cmsg->cmsg_len < sizeof (struct cmsghdr))
     /* The kernel header does this so there may be a reason.  */
@@ -37,3 +37,5 @@ __cmsg_nxthdr (struct msghdr *mhdr, struct cmsghdr *cmsg)
     return NULL;
   return cmsg;
 }
+libc_hidden_def (__libc_cmsg_nxthdr)
+strong_alias (__libc_cmsg_nxthdr, __cmsg_nxthdr);