src/java.base/share/classes/java/lang/ProcessHandleImpl.java

@@ -85,17 +85,21 @@
       * The thread pool of "process reaper" daemon threads.
       */
      private static final Executor processReaperExecutor = initReaper();
  
      private static Executor initReaper() {
-         // Initialize ThreadLocalRandom now to avoid using the smaller stack
+         // Initialize ThreadLocalRandom and ValueObjectMethods now to avoid using the smaller stack
          // of the processReaper threads.
          ThreadLocalRandom.current();
- 
+         try {
+             Class.forName("java.lang.runtime.ValueObjectMethods$MethodHandleBuilder", true, null);
+         } catch (ClassNotFoundException cnfe) {
+             throw new InternalError("unable to initialize ValueObjectMethodds", cnfe);
+         }
          // For a debug build, the stack shadow zone is larger;
          // Increase the total stack size to avoid potential stack overflow.
-         int debugDelta = "release".equals(System.getProperty("jdk.debug")) ? 0 : (4 * 4096);
+         int debugDelta = "release".equals(System.getProperty("jdk.debug")) ? 0 : (4*4096);
          final long stackSize = Boolean.getBoolean("jdk.lang.processReaperUseDefaultStackSize")
                  ? 0 : REAPER_DEFAULT_STACKSIZE + debugDelta;
  
          ThreadFactory threadFactory = grimReaper -> {
              Thread t = InnocuousThread.newSystemThread("process reaper", grimReaper,