https://git.ruby-lang.org/ruby.git/commit/?id=34f6b22df0

From 34f6b22df073fe86e30aca99be5aa0b0eb8653df Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Fri, 18 Dec 2020 12:10:20 +0900
Subject: Use rb_id_attrset without intermediate strings


diff --git a/object.c b/object.c
index b532dd3..8626d5c 100644
--- a/object.c
+++ b/object.c
@@ -2306,7 +2306,7 @@ rb_mod_attr(int argc, VALUE *argv, VALUE klass) https://github.com/ruby/ruby/blob/trunk/object.c#L2306
 	rb_category_warning(RB_WARN_CATEGORY_DEPRECATED, "optional boolean argument is obsoleted");
 	rb_attr(klass, id, 1, RTEST(argv[1]), TRUE);
 	rb_ary_push(names, ID2SYM(id));
-	if (argv[1] == Qtrue) rb_ary_push(names, rb_str_intern(rb_sprintf("%"PRIsVALUE"=", ID2SYM(id))));
+	if (argv[1] == Qtrue) rb_ary_push(names, ID2SYM(rb_id_attrset(id)));
 	return names;
     }
     return rb_mod_attr_reader(argc, argv, klass);
-- 
cgit v0.10.2


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