nobu	2016-03-24 12:43:28 +0900 (Thu, 24 Mar 2016)

  New Revision: 54243

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54243

  Log:
    date_core.c: append strings
    
    * ext/date/date_core.c (dt_lite_iso8601): strftimev() always
      returns a String, so append them directly.

  Modified files:
    trunk/ChangeLog
    trunk/ext/date/date_core.c
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 54242)
+++ ChangeLog	(revision 54243)
@@ -1,4 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
-Thu Mar 24 12:43:05 2016  Nobuyoshi Nakada  <nobu@r...>
+Thu Mar 24 12:43:26 2016  Nobuyoshi Nakada  <nobu@r...>
+
+	* ext/date/date_core.c (dt_lite_iso8601): strftimev() always
+	  returns a String, so append them directly.
 
 	* ext/date/date_core.c (d_lite_jisx0301, iso8601_timediv),
 	  (dt_lite_jisx0301): format by the format string in local buffer
Index: ext/date/date_core.c
===================================================================
--- ext/date/date_core.c	(revision 54242)
+++ ext/date/date_core.c	(revision 54243)
@@ -8350,8 +8350,8 @@ dt_lite_iso8601(int argc, VALUE *argv, V https://github.com/ruby/ruby/blob/trunk/ext/date/date_core.c#L8350
     if (argc >= 1)
 	n = NUM2LONG(argv[0]);
 
-    return f_add(strftimev("%Y-%m-%d", self, set_tmx),
-		 iso8601_timediv(self, n));
+    return rb_str_append(strftimev("%Y-%m-%d", self, set_tmx),
+			 iso8601_timediv(self, n));
 }
 
 /*

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