commit e69897bf202e18034cbef26f363bae64de70a196
Author: Paul Eggert <eggert@cs.ucla.edu>
Date:   Sun Nov 12 22:00:28 2017 -0800

    timezone: pacify GCC -Wstringop-truncation
    
    Problem reported by Martin Sebor in:
    https://sourceware.org/ml/libc-alpha/2017-11/msg00336.html
    * timezone/zic.c (writezone): Use memcpy, not strncpy.

---
 timezone/zic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/timezone/zic.c
+++ b/timezone/zic.c
@@ -1648,7 +1648,7 @@
 #define DO(field)	(void) fwrite((void *) tzh.field, \
 				(size_t) sizeof tzh.field, (size_t) 1, fp)
 		tzh = tzh0;
-		(void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
+		memcpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
 		tzh.tzh_version[0] = ZIC_VERSION;
 		convert(eitol(thistypecnt), tzh.tzh_ttisgmtcnt);
 		convert(eitol(thistypecnt), tzh.tzh_ttisstdcnt);