src/java.rmi/share/classes/sun/rmi/transport/GC.java

rev 14891 : 8160513: ClassNotFoundException sun.misc.GC when running Tomcat 9 with JDK 9
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*** 142,151 ****
--- 142,156 ----
                           tgn != null;
                           tg = tgn, tgn = tg.getParent());
                      Daemon d = new Daemon(tg);
                      d.setDaemon(true);
                      d.setPriority(Thread.MIN_PRIORITY + 1);
+                     /* Set the context class loader to null in order to avoid
+                      * keeping a strong reference to the TCCL of whatever
+                      * thread triggered the creation of this Daemon.
+                      */
+                     d.setContextClassLoader(null);
                      d.start();
                      GC.daemon = d;
                      return null;
                  }};
              AccessController.doPrivileged(pa);