[plt-scheme] drscheme in Xorg-7.0?

On 09/04/06, Paulo J. Matos <pocmatos at gmail.com> wrote:
> On 17/03/06, Williams, M. Douglas <M.DOUGLAS.WILLIAMS at saic.com> wrote:
> > I downloaded VMWare player (from http://www.vmware.com/) and followed the
> > instructions at
> > http://www.ffnn.nl/pages/articles/linux/vmware-player-image-creation.php to
> > create an Ubuntu Dapper Drake Flight 5 VM.  This is all freeware and uses
> > Xorg-7.0.  I loaded PLT Scheme 301.9 and it loads and runs fine.
> >
>
> Was there any solution to this issue?
> Working with Gentoo Linux here, updated to xorg7, and recompiler
> drscheme 301.12, I also get a sigsegv. Here's some debug info:
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread -1215768912 (LWP 20597)]
> 0x08291059 in wxWindowDC::SetFont (this=0x94d86c0, font=0x8510dc0)
>     at WindowDC.cc:2680
> 2680        XSetFont(DPY, TEXT_GC, xfs->fid);
> (gdb) bt
> #0  0x08291059 in wxWindowDC::SetFont (this=0x94d86c0, font=0x8510dc0)
>     at WindowDC.cc:2680
> #1  0x0824f14e in wxStyle::SwitchTo (this=0xa593d20, dc=0x94d86c0,
>     oldStyle=0x0) at wx_style.cxx:906
> #2  0x08268653 in wxMediaEdit::Redraw (this=0x97507f8, dc=0x94d86c0, starty=0,
>     endy=4, leftx=0, rightx=4, dy=-0, dx=-0, show_caret=<value optimized out>,
>     show_xsel=0, bgColor=0x8535d80) at wx_mpriv.cxx:2152
> #3  0x08269b70 in wxMediaEdit::Refresh (this=0x97507f8, left=0, top=0,
>     width=4, height=4, show_caret=1, bgColor=0x8535d80) at wx_mpriv.cxx:2616
> #4  0x0820330f in os_wxMediaEdit::Refresh (this=0x97507f8, x0=0, x1=0, x2=4,
>     x3=4, x4=1, x5=0x8535d80) at wxs_mede.cxx:3563
> #5  0x08277c93 in wxMediaCanvas::Redraw (this=0xb093af8, localx=0, localy=0,
>     fw=4, fh=4) at wx_medad.cxx:840
> #6  0x08277d7e in wxMediaCanvas::OnPaint (this=0xb093af8) at wx_medad.cxx:666
> #7  0x081f728f in os_wxMediaCanvasOnPaint (n=1, p=0x92a7198)
>     at wxs_madm.cxx:756
> #8  0x080c419d in _scheme_tail_apply_from_native (rator=0x874fb10, argc=1,
>     argv=0x92a7198) at schnapp.inc:19
>
> DrScheme seems to be the only application failing... I'm running xorg
> 7 for 24 hours now with a lot of different apps.
>
> Any ideas?
>

Some more debug info:
On the SetFont function where is breaks:
void wxWindowDC::SetFont(wxFont *font)
{
    XFontStruct *xfs;

    if (!DRAWABLE)
	return;

    if (!(current_font = font)) // nothing to do without a font
	return;

    xfs  =(XFontStruct*)font->GetInternalFont(scale_x, scale_y);

    if(!xfs)
      printf("xfs pointer is null\n");

    XSetFont(DPY, TEXT_GC, xfs->fid);
}

I added the printf line.
Note that the function is called a lot of times and it breaks due to
the fact that xfs is NULL. So for some reason GetInternalFont is
returning NULL.

> > Doug
> >
> >
> > -----Original Message-----
> > From: plt-scheme-bounces at list.cs.brown.edu on behalf of Matthew Flatt
> > Sent: Thu 3/16/2006 7:26 PM
> > To: Patrick McLean
> > Cc: plt-scheme at list.cs.brown.edu
> > Subject: Re: [plt-scheme] drscheme in Xorg-7.0?
> >
> > That would be great - thanks.
> >
> > Matthew
> >
> > At Thu, 16 Mar 2006 21:20:03 -0500, Patrick McLean wrote:
> > > I could make a tarball that could be unzipped into a virtual machine (like
> > > vmware) so you wouldn't have to compile a full Gentoo system.
> > >
> > > Matthew Flatt wrote:
> > > > Can anyone recommend a simple way of setting up a (virtual) machine
> > > > that will make DrScheme crash?
> > > >
> > > > I'm hoping for something that's easier than starting a Gentoo
> > > > installation from scratch...
> > >
> > > _________________________________________________
> > >   For list-related administrative tasks:
> > >   http://list.cs.brown.edu/mailman/listinfo/plt-scheme
> > _________________________________________________
> >   For list-related administrative tasks:
> >   http://list.cs.brown.edu/mailman/listinfo/plt-scheme
> >
> > _________________________________________________
> >   For list-related administrative tasks:
> >   http://list.cs.brown.edu/mailman/listinfo/plt-scheme
> >
>
>
> --
> Paulo Jorge Matos - pocm at sat inesc-id pt
> Web: http://sat.inesc-id.pt/~pocm
> Computer and Software Engineering
> INESC-ID - SAT Group
>


--
Paulo Jorge Matos - pocm at sat inesc-id pt
Web: http://sat.inesc-id.pt/~pocm
Computer and Software Engineering
INESC-ID - SAT Group