[glibc/arm/ilp32] aarch64: Fix bits/utmp.h for GCC 8

[glibc/arm/ilp32] aarch64: Fix bits/utmp.h for GCC 8

[Szabolcs Nagy]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ade8b2da9bd13685551f62fdf21fc054843851f4

commit ade8b2da9bd13685551f62fdf21fc054843851f4
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date:   Wed Feb 21 15:51:22 2018 +0000

    aarch64: Fix bits/utmp.h for GCC 8
    
    The same suppression of -Wstringop-truncation warnings as in commit
    7532837d7b03b3ca5b9a63d77a5bd81dd23f3d9c but for aarch64.
    
    2018-02-21  Szabolcs Nagy  <szabolcs.nagy@arm.com>
    
    	* sysdeps/unix/sysv/linux/aarch64/bits/utmp.h (struct utmp): Use
    	__attribute_nonstring__.

Diff:
---
 sysdeps/unix/sysv/linux/aarch64/bits/utmp.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/utmp.h b/sysdeps/unix/sysv/linux/aarch64/bits/utmp.h
index 8505175..027dceb 100644
--- a/sysdeps/unix/sysv/linux/aarch64/bits/utmp.h
+++ b/sysdeps/unix/sysv/linux/aarch64/bits/utmp.h
@@ -61,10 +61,13 @@ struct utmp
 {
   short int ut_type;		/* Type of login.  */
   pid_t ut_pid;			/* Process ID of login process.  */
-  char ut_line[UT_LINESIZE];	/* Devicename.  */
+  char ut_line[UT_LINESIZE]
+     __attribute_nonstring__;	/* Devicename.  */
   char ut_id[4];		/* Inittab ID.  */
-  char ut_user[UT_NAMESIZE];	/* Username.  */
-  char ut_host[UT_HOSTSIZE];	/* Hostname for remote login.  */
+  char ut_user[UT_NAMESIZE]
+     __attribute_nonstring__;	/* Username.  */
+  char ut_host[UT_HOSTSIZE]
+     __attribute_nonstring__;	/* Hostname for remote login.  */
   struct exit_status ut_exit;	/* Exit status of a process marked
 				   as DEAD_PROCESS.  */
 /* The ut_session and ut_tv fields must be the same size when compiled