* time.c (localtime_with_gmtoff_zone): musl libc may return NULL for

  tm_zone.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40540 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 1 deletions

diff --git a/time.c b/time.c
index e9f59c7353..6b457f22ff 100644
--- a/time.c
+++ b/time.c
@@ -1697,7 +1697,10 @@ localtime_with_gmtoff_zone(const time_t *t, struct tm *result, long *gmtoff, con
 
         if (zone) {
 #if defined(HAVE_TM_ZONE)
-            *zone = zone_str(tm.tm_zone);
+            if (tm.tm_zone)
+                *zone = zone_str(tm.tm_zone);
+            else
+                *zone = zone_str("(NO-TIMEZONE-ABBREVIATION)");
 #elif defined(HAVE_TZNAME) && defined(HAVE_DAYLIGHT)
             /* this needs tzset or localtime, instead of localtime_r */
             *zone = zone_str(tzname[daylight && tm.tm_isdst]);