[Bug awt/27854] New: ClassCastException triggered by Frame.setIconImage()

[hendrich at informatik dot uni-hamburg dot de]

A call to Frame.setIconImage() seems to (asynchronously) trigger a
ClassCastException in java.awt.Buffers.getData. I tried some printf-debugging
and the method tries to handle a gnu.java.awt.peer.gtk.CairoSurface:

Unknown data buffer: address@hidden class
gnu.java.awt.peer.gtk.CairoSurface
java.lang.ClassCastException: Unknown data buffer type
   at gnu.java.awt.Buffers.getData(Buffers.java:212)
   at
java.awt.image.SinglePixelPackedSampleModel.getDataElements(SinglePixelPackedSampleModel.java:170)
   at java.awt.image.Raster.getDataElements(Raster.java:405)
   at java.awt.image.BufferedImage.getRGB(BufferedImage.java:426)
   at java.awt.image.BufferedImage$1.startProduction(BufferedImage.java:475)
   at gnu.java.awt.peer.gtk.GtkImage.<init>(GtkImage.java:186)
   at gnu.java.awt.peer.gtk.GtkFramePeer.setIconImage(GtkFramePeer.java:181)
   at gnu.java.awt.peer.gtk.GtkFramePeer.create(GtkFramePeer.java:169)
   at gnu.java.awt.peer.gtk.GtkComponentPeer.<init>(GtkComponentPeer.java:128)
   at gnu.java.awt.peer.gtk.GtkContainerPeer.<init>(GtkContainerPeer.java:58)
   at gnu.java.awt.peer.gtk.GtkWindowPeer.<init>(GtkWindowPeer.java:144)
   at gnu.java.awt.peer.gtk.GtkFramePeer.<init>(GtkFramePeer.java:154)
   at gnu.java.awt.peer.gtk.GtkToolkit.createFrame(GtkToolkit.java:416)
   at java.awt.Frame.addNotify(Frame.java:436)
   at java.awt.Window.pack(Window.java:305)
   at PRabc.main(PRabc.java:35)

Testcase attached. 

Best, Norman


-- 
           Summary: ClassCastException triggered by Frame.setIconImage()
           Product: classpath
           Version: 0.92
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: awt
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hendrich at informatik dot uni-hamburg dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27854