From bc359b9971088ff921e26346f395c70640654e9e Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Thu, 13 Feb 2025 18:01:42 -0800
Subject: merge revision(s) b176d4f52e4af67654814dab3e9c5f4bf9170e54: [Backport
 #21008]

	[Bug #21008] Normalize before sum to float

	After switching to `Float`-mode when summing `Numeric` objects,
	normalization for `Float` is still needed.
---
 test/ruby/test_enumerator.rb | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_enumerator.rb b/test/ruby/test_enumerator.rb
index 7599d43463..cd62cd8acb 100644
--- a/test/ruby/test_enumerator.rb
+++ b/test/ruby/test_enumerator.rb
@@ -1043,4 +1043,19 @@ class TestEnumerator < Test::Unit::TestCase
     assert_raise(FrozenError) { e.feed 1 }
     assert_raise(FrozenError) { e.rewind }
   end
+
+  def test_sum_of_numeric
+    num = Class.new(Numeric) do
+      attr_reader :to_f
+      def initialize(val)
+        @to_f = Float(val)
+      end
+    end
+
+    ary = [5, 10, 20].map {|i| num.new(i)}
+
+    assert_equal(35.0, ary.sum)
+    enum = ary.each
+    assert_equal(35.0, enum.sum)
+  end
 end
-- 
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