Allow the match cache optimization for atomic groups (#7804)

1 files changed, 10 insertions, 0 deletions

diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index d04b9cf766..0a72caba45 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -1760,6 +1760,16 @@ class TestRegexp < Test::Unit::TestCase
     end;
   end
 
+  def test_match_cache_atomic
+    assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}")
+      timeout = #{ EnvUtil.apply_timeout_scale(10).inspect }
+    begin;
+      Regexp.timeout = timeout
+
+      assert_nil(/^(?>a?a?)(a|a)*$/ =~ "a" * 1000000 + "x")
+    end;
+  end
+
   def test_cache_opcodes_initialize
     str = 'test1-test2-test3-test4-test_5'
     re = '^([0-9a-zA-Z\-/]*){1,256}$'