src/macosx/classes/sun/lwawt/macosx/CCustomCursor.java

*** 34,43 ****
--- 34,44 ----
          final Rectangle bounds = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration().getBounds();
          return sMaxCursorSize = new Dimension(bounds.width / 2, bounds.height / 2);
      }
  
      Image fImage;
+     private boolean isImageOk = false;
      Point fHotspot;
  
      public CCustomCursor(final Image cursor, final Point hotSpot, final String name) throws IndexOutOfBoundsException, HeadlessException {
          super(name);
          fImage = cursor;
*** 62,71 ****
--- 63,75 ----
          // If the image is invalid, the cursor will be hidden (made completely
          // transparent). In this case, getBestCursorSize() will adjust negative w and h,
          // but we need to set the hotspot inside the image here.
          if (tracker.isErrorAny() || width < 0 || height < 0) {
              fHotspot.x = fHotspot.y = 0;
+             isImageOk = false;
+         } else {
+             isImageOk = true;
          }
  
          // Scale image to nearest supported size
          final Dimension nativeSize = toolkit.getBestCursorSize(width, height);
          if (nativeSize.width != width || nativeSize.height != height) {
*** 108,128 ****
  
      // Called from native when the cursor is set
      // Returns long array of [NSImage ptr, x hotspot, y hotspot]
      CImage fCImage;
      long getImageData() {
!         if (fCImage == null) {
              try {
                  fCImage = CImage.getCreator().createFromImage(fImage);
              } catch (IllegalArgumentException iae) {
                  // Silently return null - we want to hide cursor by providing an empty
                  // ByteArray or just null
                  return 0L;
              }
          }
  
!         return fCImage.ptr;
      }
  
      Point getHotSpot() {
          return fHotspot;
      }
--- 112,143 ----
  
      // Called from native when the cursor is set
      // Returns long array of [NSImage ptr, x hotspot, y hotspot]
      CImage fCImage;
      long getImageData() {
!         if (fCImage != null) {
!             return fCImage.ptr;
!         }
! 
!         if (isImageOk) {
              try {
                  fCImage = CImage.getCreator().createFromImage(fImage);
+ 
+                 if (fCImage == null) {
+                     isImageOk = false;
+                     return 0L;
+                 } else {
+                     return fCImage.ptr;
+                 }
              } catch (IllegalArgumentException iae) {
                  // Silently return null - we want to hide cursor by providing an empty
                  // ByteArray or just null
                  return 0L;
              }
          }
  
!         return 0L;
      }
  
      Point getHotSpot() {
          return fHotspot;
      }