java-gnome-developer

[Java-gnome-developer] SIGSEGV (cont)

[Avi B. <av...@be...>]

Hmmm... it seems like the problem is in the GtkEditable classes, or
perhaps all classes dealing with strings... and it's not just with
reflection.  With CVS code, the following test crashes:

import gtk.*;

class GtkTest {

	public void callback(String a, int b, int c) {
	}
	
	public static void main(String args[]) {

		Gtk.init(args.length,args);

		GtkEntry e = new GtkEntry();
		e.signalConnect("insert_text", "callback", new GtkTest());
		e.setText("hello world");
	}
}

It's possible to get the same crash with 0.5.0 code pretty easily as well.
I'm over my head here...

---------- Forwarded message ----------
Date: Wed, 6 Dec 2000 13:53:08 -0800 (PST)
From: Avi Bryant <av...@be...>
To: jav...@li...
Subject: SIGSEGV


I'm getting segmentation faults using java-gnome... I'll try to narrow it
down more exactly, but it seems to involve using java.lang.reflect from
within a signal callback.  Some data points: using java-gnome 0.5.0, I get
the error on Method.invoke and Field.set with the blackdown JDK, but only
on Field.set with the IBM JDK.  Using the CVS sources, I get the crash on
both JDKs for both reflection types.
Note that this only happens when I'm inside a callback... it's not a
general problem with reflection.

Can anybody reproduce this?
Does anybody have any clue what's going on?  

avi

Re: [Java-gnome-developer] SIGSEGV (cont)

[Dan B. <da...@mi...>]

Avi Bryant writes:
>Hmmm... it seems like the problem is in the GtkEditable classes, or
>perhaps all classes dealing with strings... and it's not just with
>reflection.  With CVS code, the following test crashes:

We're just about to switch over to totally rewritten code to do type
conversions (and in particular, strings), and we already have new callback
handling code that will be in the next release, so the problem may
just-go-away. But, just in case, I'll try out your specific example with
the new stuff (probably this weekend); hopefully all will be well.

Thanks.

-dan

Re: [Java-gnome-developer] SIGSEGV (cont)

[Jeffrey M. <ku...@ne...>]

Avi,

This bug was fixed.  You should get a copy of the latest code from
CVS.  Per Dan's ealier reply, you might wish to wait for a day or
two as we are currently releasing much code.

-Jeff

On 2000.12.06 22:01:57 -0500 Avi Bryant wrote:
> 
> Hmmm... it seems like the problem is in the GtkEditable classes, or
> perhaps all classes dealing with strings... and it's not just with
> reflection.  With CVS code, the following test crashes:
> 
> import gtk.*;
> 
> class GtkTest {
> 
> 	public void callback(String a, int b, int c) {
> 	}
> 	
> 	public static void main(String args[]) {
> 
> 		Gtk.init(args.length,args);
> 
> 		GtkEntry e = new GtkEntry();
> 		e.signalConnect("insert_text", "callback", new
> GtkTest());
> 		e.setText("hello world");
> 	}
> }
> 
> It's possible to get the same crash with 0.5.0 code pretty easily as
> well.
> I'm over my head here...
> 
> ---------- Forwarded message ----------
> Date: Wed, 6 Dec 2000 13:53:08 -0800 (PST)
> From: Avi Bryant <av...@be...>
> To: jav...@li...
> Subject: SIGSEGV
> 
> 
> I'm getting segmentation faults using java-gnome... I'll try to narrow it
> down more exactly, but it seems to involve using java.lang.reflect from
> within a signal callback.  Some data points: using java-gnome 0.5.0, I
> get
> the error on Method.invoke and Field.set with the blackdown JDK, but only
> on Field.set with the IBM JDK.  Using the CVS sources, I get the crash on
> both JDKs for both reflection types.
> Note that this only happens when I'm inside a callback... it's not a
> general problem with reflection.
> 
> Can anybody reproduce this?
> Does anybody have any clue what's going on?  
> 
> avi
> 
> 
> _______________________________________________
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