Gtkmm-forge Digest, Vol 3, Issue 20

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Today's Topics:

   1. [Bug 352063] New: cannot Glib::wrap a PangoLayout*
      (glibmm (bugzilla.gnome.org))


----------------------------------------------------------------------

Message: 1
Date: Sat, 19 Aug 2006 19:49:58 +0100 (BST)
From: "glibmm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 352063] New: cannot Glib::wrap a
	PangoLayout*
To: gtkmm-forge lists sourceforge net
Message-ID: <bug-352063-5595 http bugzilla gnome org/>
Content-Type: text/plain; charset=utf-8

Do not reply to this via email (we are currently unable to handle email
responses and they get discarded).  You can add comments to this bug at
http://bugzilla.gnome.org/show_bug.cgi?id=352063
 glibmm | object | Ver: 2.11.x

           Summary: cannot Glib::wrap a PangoLayout*
           Product: glibmm
           Version: 2.11.x
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: object
        AssignedTo: gtkmm-forge lists sourceforge net
        ReportedBy: ralf ark in-berlin de
         QAContact: gtkmm-forge lists sourceforge net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Steps to reproduce:
compile and run this minimal program:

#include <glibmm/ustring.h>
#include <glibmm/refptr.h>
#include <cairomm/surface.h>
#include <cairomm/context.h>
#include <pangomm/layout.h>


int main (int argc, char** argv)
{
        Cairo::RefPtr<Cairo::PdfSurface> _csfc;
        Cairo::RefPtr<Cairo::Context>    _cctx;
        Glib::RefPtr<Pango::Layout>      _play;

        _csfc = Cairo::PdfSurface::create ("foo.pdf", 700, 1000);
        _cctx = Cairo::Context::create (_csfc);
        _play = Pango::Layout::create (_cctx);
        _play->set_width (1);
 } /* these are fantasy numbers */

Stack trace:
==4156== Memcheck, a memory error detector.
==4156== Copyright (C) 2002-2005, and GNU GPL'd, by Julian Seward et al.
==4156== Using LibVEX rev 1575, a library for dynamic binary translation.
==4156== Copyright (C) 2004-2005, and GNU GPL'd, by OpenWorks LLP.
==4156== Using valgrind-3.1.1, a dynamic binary instrumentation framework.
==4156== Copyright (C) 2000-2005, and GNU GPL'd, by Julian Seward et al.
==4156== For more details, rerun with: -v
==4156== 

(process:4156): glibmm-CRITICAL **:
Glib::ObjectBase*<unnamed>::create_new_wrapper(GObject*): assertion
`wrap_func_table != 0' failed

(process:4156): glibmm-WARNING **: failed to wrap type of 'PangoLayout'
==4156== Invalid read of size 4
==4156==    at 0x470BECC: Pango::Layout::set_width(int) (in
/usr/lib/libpangomm-1.4.so.1.0.30)
==4156==    by 0x8048C46: main (in /home/rws/calo/a.out)
==4156==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==4156== 
==4156== Process terminating with default action of signal 11 (SIGSEGV)
==4156==  Access not within mapped region at address 0x0
==4156==    at 0x470BECC: Pango::Layout::set_width(int) (in
/usr/lib/libpangomm-1.4.so.1.0.30)
==4156==    by 0x8048C46: main (in /home/rws/calo/a.out)
==4156== 

Other information:
the pointer returned from pango_cairo_create_layout is non-NULL


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