src/java.base/share/classes/java/lang/invoke/MethodType.java

*** 1243,1254 ****
      private void MethodType_init(Class<?> rtype, Class<?>[] ptypes) {
          // In order to communicate these values to readResolve, we must
          // store them into the implementation-specific final fields.
          checkRtype(rtype);
          checkPtypes(ptypes);
!         UNSAFE.putObject(this, OffsetHolder.rtypeOffset, rtype);
!         UNSAFE.putObject(this, OffsetHolder.ptypesOffset, ptypes);
      }
  
      // Support for resetting final fields while deserializing. Implement Holder
      // pattern to make the rarely needed offset calculation lazy.
      private static class OffsetHolder {
--- 1243,1254 ----
      private void MethodType_init(Class<?> rtype, Class<?>[] ptypes) {
          // In order to communicate these values to readResolve, we must
          // store them into the implementation-specific final fields.
          checkRtype(rtype);
          checkPtypes(ptypes);
!         UNSAFE.putReference(this, OffsetHolder.rtypeOffset, rtype);
!         UNSAFE.putReference(this, OffsetHolder.ptypesOffset, ptypes);
      }
  
      // Support for resetting final fields while deserializing. Implement Holder
      // pattern to make the rarely needed offset calculation lazy.
      private static class OffsetHolder {