dbus set attr method crashes inkscape if the obj id is uknown

this seems like a bug in the inkscape core

SPObject *SPDocument::getObjectById(gchar const *id) const
{
    g_return_val_if_fail(id != NULL, NULL);

    GQuark idq = g_quark_from_string(id);
    return (SPObject*)g_hash_table_lookup(priv->iddef, GINT_TO_POINTER(idq));
}

if id is unknown, the spobject cast will fail. the client code assumes that NULL will be returned.

So the cast should be conditional,

> this seems like a bug in the inkscape core

Could you attach backtraces from the crashes to your reports, as well as any related console messages?

Also, providing details about OS and Inkscape revision number with each bug report would be helpful for bug triage.

Ok my initial assessment was wrong. This is a simple bug in the dbus interface code.

I attach a patch that fixes the issue.

~suv: I keep forgetting to add context sorry. is there a way i can describe my setup once, and link to it in the reports?

<off-topic>
> is there a way i can describe my setup once, and
> link to it in the reports?

IMHO it would be better to include the information in each report, because Inkscape revisions as well as the build&runtime environment will be different over time. For a bug report however it is important to know with which version/revision/platform it has been produced (and confirmed).

Preferably add two lines to the bug description:
- Inkscape version + revision number
- platform/distribution version
and
- optionally: any external dependencies / libraries which possibly are involved (e..g. after an upgrade)

Another reason to include it into the report itself: support of searching the bug tracker with keywords.
</off-topic>

Fix committed in the trunk, revision 10114.
Thanks Joakim!