From 0cfba9cdd9c18b0245b088ed5b460f0d6f90d586 Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@atdot.net>
Date: Wed, 29 Jan 2020 00:55:11 +0900
Subject: [PATCH] Revert "remove debug code."

This reverts commit 65768c80beb64a14c3e918f8ed5e41e9349025d0.
---
 test/ruby/test_rand.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/ruby/test_rand.rb b/test/ruby/test_rand.rb
index 218bed7607..0808c1ef2a 100644
--- a/test/ruby/test_rand.rb
+++ b/test/ruby/test_rand.rb
@@ -2,6 +2,9 @@
 require 'test/unit'
 
 class TestRand < Test::Unit::TestCase
+  def teardown
+    raise if srand == 0
+  end
   def assert_random_int(ws, m, init = 0)
     # call srand in another process
     assert_separately [], %Q{