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-rw-r--r--sysdeps/unix/sysv/linux/bits/socket.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/socket.h b/sysdeps/unix/sysv/linux/bits/socket.h
index bd3dd9f4f6..1c8b30b7c8 100644
--- a/sysdeps/unix/sysv/linux/bits/socket.h
+++ b/sysdeps/unix/sysv/linux/bits/socket.h
@@ -228,7 +228,7 @@ struct cmsghdr
     int cmsg_level;		/* Originating protocol.  */
     int cmsg_type;		/* Protocol specific type.  */
 #if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2
-    unsigned char __cmsg_data[0]; /* Ancillary data.  */
+    __extension__ unsigned char __cmsg_data[0]; /* Ancillary data.  */
     /* XXX Perhaps this should be removed.  */
 #endif
   };