From a2d874f860243205a1f8d373ceac5e6e528871ac Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@atdot.net>
Date: Wed, 11 Oct 2023 15:14:55 +0900
Subject: [PATCH] WIP add thread list checker

---
 test/ruby/test_thread.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index 05c8a28732a2ef..031721f7ab442e 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -164,6 +164,8 @@ def test_thread_interrupt_for_killed_thread
         t = Thread.new{sleep 0}
         t.raise Interrupt
         Thread.pass # allow t to finish
+        n = Thread.list.size
+        raise "#{n} > 1000" if n > 1000
       end
     _end
   end