[Bug AWT/16824] New: GdkPixbufDecoder crashes with image loading programs

[Bug AWT/16824] New: GdkPixbufDecoder crashes with image loading programs

[mark at gcc dot gnu dot org]

I found a strange segfault issue in programs that try to load/display images
(GIF/JPEG).

Mark and I have located the segfault to occur in
native/jni/gtk-peer/gnu_java_awt_peer_gtk_GdkPixbufDecoder.c Line 226. Here is
gdk_env used (which probably should be env instead). The real problem seems to
be, that GTKToolkit is not yet initialized properly.

The following workaround seems to work though:

--- gnu/java/awt/peer/gtk/GdkPixbufDecoder.java 26 Jun 2004 16:06:47 -0000 1.5
+++ gnu/java/awt/peer/gtk/GdkPixbufDecoder.java 28 Jun 2004 20:34:49 -0000
@@ -57,6 +57,8 @@
System.loadLibrary("gtkpeer");
}
initStaticState ();
+ java.awt.Toolkit.getDefaultToolkit();
+ try { Thread.sleep(500); } catch (InterruptedException ignored) { }
}
native static void initStaticState ();
private final int native_state = GtkGenericPeer.getUniqueInteger ();

this means, if we wait long enough for GTKToolkit to initialize, the segfault
does not occur.

Any ideas how to fix this? Maybe I should add that I tried that with JamVM 1.1.4

/Roman

This bug report comes from GNU Classpath:
https://savannah.gnu.org/bugs/index.php?func=detailitem&item_id=9484

-- 
           Summary: GdkPixbufDecoder crashes with image loading programs
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: AWT
        AssignedTo: fitzsim at redhat dot com
        ReportedBy: mark at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
                    dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16824

[Bug AWT/16824] GdkPixbufDecoder crashes with image loading programs

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-08-02 19:10:41
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16824

[Bug awt/16824] GdkPixbufDecoder crashes with image loading programs

[fitzsim at redhat dot com]

------- Additional Comments From fitzsim at redhat dot com  2005-08-21 05:35 -------
Do you have an example program for this?  I suspect this was fixed by Sven's
image work.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16824

[Bug awt/16824] GdkPixbufDecoder crashes with image loading programs

[mark at gcc dot gnu dot org]

------- Additional Comments From mark at gcc dot gnu dot org  2005-08-21 11:06 -------
It showed up as random crashes in some mauve tests.
Such as gnu.testlet.java.awt.image.PixelGrabber.SimpleGrabber

Fixed by:

2004-08-08  Mark Wielaard  <mark@klomp.org>

        * native/jni/gtk-peer/gnu_java_awt_peer_gtk_GdkPixbufDecoder.c:
        #include gdk.h, not gtk.h. #include jni.h, native_state.h, string.h
        and stdlib.h, not gtkpeer.h.
        (*vm): New static variable.
        (areaPreparedID): Make static.
        (areaUpdatedID): Likewise.
        (area_prepared): Get and use JNIEnv through stored JavaVM *vm.
        (area_prepared): Likewise.
        (area_updated): Likewise.
        (closed): Likewise.
        (initStaticState): Initialize *vm javaVM.
        (pumpBytes): Use given env, not global gdk_env.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16824