1 files changed, 18 insertions, 0 deletions
diff --git a/test/ruby/test_sleep.rb b/test/ruby/test_sleep.rb
index 991b73ebd5..7ef962db4a 100644
--- a/test/ruby/test_sleep.rb
+++ b/test/ruby/test_sleep.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: false
 require 'test/unit'
 require 'etc'
+require 'timeout'
 
 class TestSleep < Test::Unit::TestCase
   def test_sleep_5sec
@@ -13,4 +14,21 @@ class TestSleep < Test::Unit::TestCase
       assert_operator(slept, :<=, 6.0, "[ruby-core:18015]: longer than expected")
     end
   end
+
+  def test_sleep_forever_not_woken_by_sigchld
+    begin
+      t = Thread.new do
+        sleep 0.5
+        `echo hello`
+      end
+
+      assert_raise Timeout::Error do
+        Timeout.timeout 2 do
+          sleep # Should block forever
+        end
+      end
+    ensure
+      t.join
+    end
+  end
 end