The regression test test/sun/java2d/volatileImage/LineClipTest.java throws
ClassCastException on certain platforms. This issue was reported as part of
4915527, but I am filing it here as a separate issue. Here's the relevant
portion of that bug description:

This test also fails on our Solaris 10 (x86) box (CDE)
(SunOS linux-18 5.10 s10_36 i86pc i386 i86pc)
with JDK1.5.0(tested with b15-b18)
producing the following output in its jtr:

----------System.out:(1/7)----------
PASSED
----------System.err:(33/2234)----------
STATUS:Passed.
java.lang.ClassCastException: sun.awt.image.WritableRasterNative
at sun.awt.image.BufImgSurfaceData.createDataBC(BufImgSurfaceData.java:259)
at sun.awt.image.BufImgSurfaceData.createData(BufImgSurfaceData.java:108)
at sun.awt.image.VolatileSurfaceManager.getBackupSurface(VolatileSurfaceManager.java:243)
at sun.awt.image.VolatileSurfaceManager.restoreContents(VolatileSurfaceManager.java:265)
at sun.java2d.SurfaceData.restoreContents(SurfaceData.java:122)
at sun.awt.X11SurfaceData$X11PixmapSurfaceData.getReplacement(X11SurfaceData.java:522)
at sun.java2d.pipe.DrawImage.renderSurfaceData(DrawImage.java:354)
at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:65)
at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:48)
at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:732)
at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:2804)
at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:2794)
at LineClipTest.paint(LineClipTest.java:276)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:21)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:60)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:97)
at java.awt.Container.paint(Container.java:1647)
at sun.awt.RepaintArea.paintComponent(RepaintArea.java:201)
at sun.awt.RepaintArea.paint(RepaintArea.java:177)
at sun.awt.motif.MComponentPeer.handleEvent(MComponentPeer.java:391)
at java.awt.Component.dispatchEventImpl(Component.java:3995)
at java.awt.Container.dispatchEventImpl(Container.java:1962)
at java.awt.Window.dispatchEventImpl(Window.java:1729)
at java.awt.Component.dispatchEvent(Component.java:3770)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:214)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
STATUS:Failed.`main' threw exception: java.lang.ClassCastException: sun.awt.image.WritableRasterNative