Re: [developers] simplified naskh bug only on x86_64

[Mohammed Sameer <msameer at foolab dot org>]

This is a bug in pango.
I guess it should never crash even if you feed it a broken font.

You might like to submit a proper backtrace to the pango maintainers.

Cheers,

P.S. What's "البيقونية" ?

On Fri, Mar 20, 2009 at 12:29:04AM +0200, Muayyad AlSadi wrote:
> Salam,
> this is part of the session
> notice that it mentions it more over if other font is used it won't crash
> 
> [ahmed at wizard-box ~]$ Thwab
> Warning: incorrect memo length
> /usr/bin/Thwab:243: PangoWarning: failed to create cairo scaled font,
> expect ugly output. the offending font is 'Simplified Naskh Bold
> 29.9990234375'
>   while (gtk.events_pending()): gtk.main_iteration();
> /usr/bin/Thwab:243: PangoWarning: shaping failure, expect ugly output.
> shape-engine='ArabicEngineFc', font='Simplified Naskh Bold
> 29.9990234375', text='البيقونية'
>   while (gtk.events_pending()): gtk.main_iteration();
> /usr/bin/Thwab:243: PangoWarning: failed to create cairo scaled font,
> expect ugly output. the offending font is 'Simplified Naskh 16'
>   while (gtk.events_pending()): gtk.main_iteration();
> /usr/bin/Thwab:243: PangoWarning: failed to create cairo scaled font,
> expect ugly output. the offending font is 'Simplified Naskh
> 18.0791015625'
>   while (gtk.events_pending()): gtk.main_iteration();
> /usr/bin/Thwab:243: PangoWarning: shaping failure, expect ugly output.
> shape-engine='BasicEngineFc', font='Simplified Naskh 18.0791015625',
> text='The quick brown fox jumps over the lazy dog.'
>   while (gtk.events_pending()): gtk.main_iteration();
> /usr/bin/Thwab:243: PangoWarning: shaping failure, expect ugly output.
> shape-engine='ArabicEngineFc', font='Simplified Naskh 16',
> text='الكتاب : البيقونية'
>   while (gtk.events_pending()): gtk.main_iteration();
> *** glibc detected *** python: malloc(): memory corruption:
> 0x00007f24fd96c3b0 ***
> ======= Backtrace: =========
> /lib64/libc.so.6[0x388d47b1ff]
> /lib64/libc.so.6(__libc_malloc+0x98)[0x388d47ca38]
> /lib64/libglib-2.0.so.0(g_realloc+0x2e)[0x3cf6a3fe8e]
> /usr/lib64/libpango-1.0.so.0(pango_glyph_string_set_size+0x78)[0x3cf9814c48]
> /usr/lib64/libpango-1.0.so.0[0x3cf981ab12]
> /usr/lib64/libpango-1.0.so.0(pango_shape+0x12e)[0x3cf982c13e]
> /usr/lib64/libpango-1.0.so.0[0x3cf981f152]
> /usr/lib64/libpango-1.0.so.0[0x3cf981f636]
> /usr/lib64/libpango-1.0.so.0[0x3cf981f974]
> /usr/lib64/libpango-1.0.so.0[0x3cf9821674]
> /usr/lib64/libpango-1.0.so.0[0x3cf982258d]
> /usr/lib64/libgtk-x11-2.0.so.0(gtk_text_layout_get_line_display+0x67d)[0x3d28fc6f9d]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28fca97a]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28fa97b7]
> /usr/lib64/libgtk-x11-2.0.so.0(gtk_text_layout_validate_yrange+0x20f)[0x3d28fc973f]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28fd4f95]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28fd64ce]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28fd6509]
> /usr/lib64/libgdk-x11-2.0.so.0[0x3d2981b70b]
> /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x23b)[0x3cf6a3779b]
> /lib64/libglib-2.0.so.0[0x3cf6a3af6d]
> /lib64/libglib-2.0.so.0(g_main_context_iteration+0x6b)[0x3cf6a3b12b]
> /usr/lib64/libgtk-x11-2.0.so.0(gtk_main_iteration_do+0x1d)[0x3d28f236ed]
> /usr/lib64/python2.5/site-packages/gtk-2.0/gtk/_gtk.so[0x6a03c41]
> /usr/lib64/libpython2.5.so.1.0(PyEval_EvalFrameEx+0x543c)[0x3ae44bed1c]
> /usr/lib64/libpython2.5.so.1.0(PyEval_EvalFrameEx+0x658d)[0x3ae44bfe6d]
> /usr/lib64/libpython2.5.so.1.0(PyEval_EvalCodeEx+0x715)[0x3ae44c0865]
> /usr/lib64/libpython2.5.so.1.0[0x3ae445be72]
> /usr/lib64/libpython2.5.so.1.0(PyObject_Call+0x13)[0x3ae443d493]
> /usr/lib64/libpython2.5.so.1.0[0x3ae4444740]
> /usr/lib64/libpython2.5.so.1.0(PyObject_Call+0x13)[0x3ae443d493]
> /usr/lib64/libpython2.5.so.1.0(PyEval_CallObjectWithKeywords+0x71)[0x3ae44b8d11]
> /usr/lib64/python2.5/site-packages/gtk-2.0/gobject/_gobject.so[0x760a23a]
> /lib64/libgobject-2.0.so.0(g_closure_invoke+0x16d)[0x3cf6e0b7dd]
> /lib64/libgobject-2.0.so.0[0x3cf6e214bd]
> /lib64/libgobject-2.0.so.0(g_signal_emit_valist+0x7b8)[0x3cf6e22b68]
> /lib64/libgobject-2.0.so.0(g_signal_emit_by_name+0x247)[0x3cf6e22ee7]
> /lib64/libgobject-2.0.so.0(g_closure_invoke+0x16d)[0x3cf6e0b7dd]
> /lib64/libgobject-2.0.so.0[0x3cf6e214bd]
> /lib64/libgobject-2.0.so.0(g_signal_emit_valist+0x7b8)[0x3cf6e22b68]
> /lib64/libgobject-2.0.so.0(g_signal_emit+0x83)[0x3cf6e23093]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28e850fd]
> /lib64/libgobject-2.0.so.0(g_closure_invoke+0x16d)[0x3cf6e0b7dd]
> /lib64/libgobject-2.0.so.0[0x3cf6e20dd8]
> /lib64/libgobject-2.0.so.0(g_signal_emit_valist+0x7b8)[0x3cf6e22b68]
> /lib64/libgobject-2.0.so.0(g_signal_emit+0x83)[0x3cf6e23093]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28e8434d]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d28f29a08]
> /lib64/libgobject-2.0.so.0(g_closure_invoke+0x16d)[0x3cf6e0b7dd]
> /lib64/libgobject-2.0.so.0[0x3cf6e2119b]
> /lib64/libgobject-2.0.so.0(g_signal_emit_valist+0x63a)[0x3cf6e229ea]
> /lib64/libgobject-2.0.so.0(g_signal_emit+0x83)[0x3cf6e23093]
> /usr/lib64/libgtk-x11-2.0.so.0[0x3d2902c7de]
> /usr/lib64/libgtk-x11-2.0.so.0(gtk_propagate_event+0xe3)[0x3d28f22373]
> /usr/lib64/libgtk-x11-2.0.so.0(gtk_main_do_event+0x2e3)[0x3d28f23493]
> /usr/lib64/libgdk-x11-2.0.so.0[0x3d2984deac]
> /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x23b)[0x3cf6a3779b]
> /lib64/libglib-2.0.so.0[0x3cf6a3af6d]
> /lib64/libglib-2.0.so.0(g_main_loop_run+0x1cd)[0x3cf6a3b49d]
> /usr/lib64/libgtk-x11-2.0.so.0(gtk_main+0xa7)[0x3d28f238a7]
> /usr/lib64/python2.5/site-packages/gtk-2.0/gtk/_gtk.so[0x6a03d72]
> /usr/lib64/libpython2.5.so.1.0(PyEval_EvalFrameEx+0x568b)[0x3ae44bef6b]
> /usr/lib64/libpython2.5.so.1.0(PyEval_EvalCodeEx+0x715)[0x3ae44c0865]
> ======= Memory map: ========
> 00110000-00117000 r-xp 00000000 08:01 600250
>   /usr/lib64/python2.5/lib-dynload/operator.so
> 00117000-00317000 ---p 00007000 08:01 600250
>   /usr/lib64/python2.5/lib-dynload/operator.so
> 00317000-00319000 rw-p 00007000 08:01 600250
>   /usr/lib64/python2.5/lib-dynlo^C^C^CKilled
> [ahmed at wizard-box ~]$ rpm -qf /usr/lib64/python2.5/lib-dynload/operator.so
> python-2.5.2-1.fc10.x86_64
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