https://git.ruby-lang.org/ruby.git/commit/?id=2735da2039

From 2735da2039b9e441e41b11b606ba362db350a658 Mon Sep 17 00:00:00 2001
From: "S.H" <gamelinks007@g...>
Date: Fri, 24 Jul 2020 20:17:31 +0900
Subject: Fix Time#to_a behavior with timezone [Bug #17046]


diff --git a/test/ruby/test_time_tz.rb b/test/ruby/test_time_tz.rb
index 4cf1fcb..c9c2b77 100644
--- a/test/ruby/test_time_tz.rb
+++ b/test/ruby/test_time_tz.rb
@@ -661,6 +661,12 @@ module TestTimeTZ::WithTZ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_time_tz.rb#L661
     assert_equal(utc, t.to_i)
   end
 
+  def subtest_to_a(time_class, tz, tzarg, tzname, abbr, utc_offset)
+    t = time_class.new(2018, 9, 1, 12, 0, 0, tzarg)
+    ary = t.to_a
+    assert_equal(ary, [t.sec, t.min, t.hour, t.mday, t.mon, t.year, t.wday, t.yday, t.isdst, t.zone])
+  end
+
   def subtest_marshal(time_class, tz, tzarg, tzname, abbr, utc_offset)
     t = time_class.new(2018, 9, 1, 12, 0, 0, tzarg)
     t2 = Marshal.load(Marshal.dump(t))
diff --git a/time.c b/time.c
index f00e0cd..70725b7 100644
--- a/time.c
+++ b/time.c
@@ -4867,7 +4867,7 @@ time_to_a(VALUE time) https://github.com/ruby/ruby/blob/trunk/time.c#L4867
     struct time_object *tobj;
 
     GetTimeval(time, tobj);
-    MAKE_TM(time, tobj);
+    MAKE_TM_ENSURE(time, tobj, tobj->vtm.yday != 0);
     return rb_ary_new3(10,
 		    INT2FIX(tobj->vtm.sec),
 		    INT2FIX(tobj->vtm.min),
-- 
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