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Re: [virt-tools-list] [virt-viewer 1/2] vnc: Clear all displays before creating dummy display



On Tue, Oct 15, 2013 at 5:20 PM, Christophe Fergeau <cfergeau redhat com> wrote:
> If VirtViewerSessionVnc::disconnected is called because of an
> authentication failure, we get:
> (remote-viewer:29588): gtk-vnc-DEBUG: vncdisplay.c Disconnected from VNC server
>
> (remote-viewer:29588): Gtk-WARNING **: Attempting to add a widget with type
> VncDisplay to a container of type VirtViewerDisplayVnc, but the widget is
> already inside a container of type VirtViewerDisplayVnc, please use
> gtk_widget_reparent()
>
> Program received signal SIGTRAP, Trace/breakpoint trap.
> 0x0000003136e50499 in g_logv (log_domain=0x3f2e13e143 "Gtk", log_level=G_LOG_LEVEL_WARNING, format=<optimized out>,
>     args=args entry=0x7fffffffd250) at gmessages.c:989
> 989                     G_BREAKPOINT ();
> Missing separate debuginfos, use: debuginfo-install ibus-gtk3-1.5.4-2.fc20.x86_64 ibus-libs-1.5.4-2.fc20.x86_64
> (gdb) bt
>     args=args entry=0x7fffffffd250) at gmessages.c:989
>     instance=instance entry=0x8aa260, args=args entry=0x7fffffffd570, n_params=0, param_types=0x0) at gclosure.c:840
>     var_args=var_args entry=0x7fffffffd570) at gsignal.c:3238
>     at gsignal.c:3386
>     instance=instance entry=0x8b7aa0, args=args entry=0x7fffffffd840, n_params=0, param_types=0x0) at gclosure.c:840
>     var_args=var_args entry=0x7fffffffd840) at gsignal.c:3238
>     at gsignal.c:3386
>     self=<optimized out>) at gmain.c:3712

This backtrace really doesn't help, or does it?

>
> This commit calls virt_viewer_session_clear_displays() before creating a dummy VNC display with
> virt_viewer_display_vnc_new(), which avoids this warning.
> ---
>  src/virt-viewer-session-vnc.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/src/virt-viewer-session-vnc.c b/src/virt-viewer-session-vnc.c
> index 05e98c8..d5d0631 100644
> --- a/src/virt-viewer-session-vnc.c
> +++ b/src/virt-viewer-session-vnc.c
> @@ -110,7 +110,11 @@ static void
>  virt_viewer_session_vnc_disconnected(VncDisplay *vnc G_GNUC_UNUSED,
>                                       VirtViewerSessionVnc *session)
>  {
> -    GtkWidget *display = virt_viewer_display_vnc_new(session->priv->vnc);
> +    GtkWidget *display;
> +    if (session->priv->vnc != NULL) {
> +        virt_viewer_session_clear_displays(VIRT_VIEWER_SESSION(session));
> +    }

Can be called unconditionally.

> +    display = virt_viewer_display_vnc_new(session->priv->vnc);
>      DEBUG_LOG("Disconnected");
>      g_signal_emit_by_name(session, "session-disconnected");
>      virt_viewer_display_set_show_hint(VIRT_VIEWER_DISPLAY(display),
> --
> 1.8.3.1

Please update backtrace.

-- 
Marc-André Lureau


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