Re: GtkBuilder bug?

["Mikkel Kamstrup Erlandsen" <mikkel kamstrup gmail com>]

On 27/02/2008, Brian J. Tarricone <bjt23 cornell edu> wrote:

Pavel Syomin wrote:
> Hi, all!
>
> I had been experimenting with GtkBuilder using Gtk+ 2.12.5 from Fedora
> 8. I have found, that if there is reference to unknown type in UI-file,
> then application crashes. Is it a GtkBuilder bug?
>
> Test program:

[snip]

>
> Gtk-ERROR **: Invalid type: Unknown
> aborting...
> Segmentation fault


I'm guessing that's intentional.  g_error() causes the program to abort,
so it looks like whoever did the parsing code in GtkBuilder intended the
app to abort if the UI description has errors.

It's debatable as to whether or not this is the correct behavior, but
one could argue that, if your UI is corrupt, you can't really rely on
your program to work properly, and it could also cause harm to user data
-- basically you have no idea what will happen and your program's
behavior is undefined.

It could also be seen as a way to increase the quality of GtkBuilder UI
description files that end up out in the wild.  App developers will do a
much better job of making sure their UI files are correct if incorrect
files cause the app to abort.

Hmmm. This sounds like a very narrow minded decision to me. I have been planning to write write a framework where one can send GtkBuilder XML snippets to a DBus service and have that service embed this as out of process plugins.

The described GtkBuilder behavior forces me to write a separate validator before I pass it to the GtkBuilder. Bugger.

Cheers,
Mikkel