From 3203ae53ffeea05c7719d4ba863e0ca492b305cd Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 18 Feb 2017 04:23:20 +0000
Subject: array.c: check if numeric

* array.c (finish_exact_sum): add 0 and the initial value to check
  if the latter is numeric.  [ruby-core:79572] [Bug #13222]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57651 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/test_array.rb | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index 08100142f8..b0be0b4a87 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -2838,6 +2838,9 @@ class TestArray < Test::Unit::TestCase
     assert_equal("abc", ["a", "b", "c"].sum(""))
     assert_equal([1, [2], 3], [[1], [[2]], [3]].sum([]))
 
+    assert_raise(TypeError) {[0].sum("")}
+    assert_raise(TypeError) {[1].sum("")}
+
     assert_separately(%w[-rmathn], <<-EOS, ignore_stderr: true)
       assert_equal(6, [1r, 2, 3r].sum)
     EOS
-- 
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