Add memory leak test for Regexp timeout

peterzhu2118 · peterzhu2118 · commit 0f3dc8f6d4c5 · 2024-01-30T14:33:14.000-05:00
[Bug #20228]
diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
@@ -1807,6 +1807,23 @@ def test_s_timeout_corner_cases
     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 }
