From 31378dc0969f4466b2122d730b7298dd7004acdf Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@peterzhu.ca>
Date: Tue, 30 Jan 2024 14:16:55 -0500
Subject: Add memory leak test for Regexp timeout

[Bug #20228]
---
 test/ruby/test_regexp.rb | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index 2de622f9a5..e6eee24b2e 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -1807,6 +1807,23 @@ class TestRegexp < Test::Unit::TestCase
     end;
   end
 
+  def test_s_timeout_memory_leak
+    assert_no_memory_leak([], "#{<<~"begin;"}", "#{<<~"end;"}", "[Bug #20228]", rss: true)
+      Regexp.timeout = 0.001
+      regex = /^(a*)*$/
+      str = "a" * 1000000 + "x"
+
+      code = proc do
+        regex =~ str
+      rescue
+      end
+
+      10.times(&code)
+    begin;
+      1_000.times(&code)
+    end;
+  end
+
   def per_instance_redos_test(global_timeout, per_instance_timeout, expected_timeout)
     assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
       global_timeout = #{ EnvUtil.apply_timeout_scale(global_timeout).inspect }
-- 
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