src/java.desktop/unix/classes/sun/awt/X11/XlibWrapper.java

*** 527,537 ****
      /*
        int (*XSynchronize(Display *display, Bool onoff))();
            display   Specifies the connection to the X server.
            onoff     Specifies a Boolean value that indicates whether to enable or disable synchronization.
       */
!     static native int XSynchronize(long display, boolean onoff);
  
      /**
       * Extracts an X event that can be processed in a secondary loop.
       * Should only be called on the toolkit thread.
       * Returns false if this secondary event was terminated.
--- 527,537 ----
      /*
        int (*XSynchronize(Display *display, Bool onoff))();
            display   Specifies the connection to the X server.
            onoff     Specifies a Boolean value that indicates whether to enable or disable synchronization.
       */
!     static native long XSynchronize(long display, boolean onoff);
  
      /**
       * Extracts an X event that can be processed in a secondary loop.
       * Should only be called on the toolkit thread.
       * Returns false if this secondary event was terminated.