@@ -0,0 +1,58 @@
+package org.lmdbjava;
+
+import org.junit.jupiter.api.RepeatedTest;
+
+import java.nio.ByteBuffer;
+import java.nio.file.Path;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.function.Consumer;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.lmdbjava.EnvFlags.MDB_NOSUBDIR;
+import static org.lmdbjava.EnvFlags.MDB_NOTLS;
+
+public class TestSegfault {
+  //  @Test
+  @RepeatedTest(1000)
+  void testSegFault() {
+    try (final ExecutorService executor1 = Executors.newSingleThreadExecutor()) {
+      try (final ExecutorService executor2 = Executors.newSingleThreadExecutor()) {
+        executor1.execute(makeRunnable(this::txParentDeniedIfEnvClosed));
+        executor2.execute(makeRunnable(this::txParentDeniedIfEnvClosed));
+        executor1.execute(makeRunnable(this::txParentDeniedIfEnvClosed));
+//        executor2.execute(makeRunnable(this::txParentROChildRWIncompatible));
+      }
+    }
+  }
+
+  private Runnable makeRunnable(final Consumer<Env<ByteBuffer>> consumer) {
+    return () -> {
+      final Path file = FileUtil.createTempFile();
+        try {
+          try (Env<ByteBuffer> env = Env.create().setMapSize(2_085_760_999).setMaxDbs(1).open(file.toFile(), MDB_NOSUBDIR)) {
+            consumer.accept(env);
+          }
+        } catch (final Exception e) {
+          e.printStackTrace();
+        } finally {
+          FileUtil.delete(file);
+        }
+    };
+  }
+
+  private void txParentDeniedIfEnvClosed(final Env<ByteBuffer> env) {
+    assertThatThrownBy(
+            () -> {
+              try (Txn<ByteBuffer> txRoot = env.txnWrite()) {
+                try (final Txn<ByteBuffer> txChild = env.txn(txRoot)) {
+                  env.close();
+                  assertThat(txChild.getParent()).isEqualTo(txRoot);
+                }
+              }
+            })
+            .isInstanceOf(Env.AlreadyClosedException.class);
+  }
+}
+