Re: segfault when destroying GtkTextChildAnchors

["Matthias Clasen" <maclas gmx de>]

> as seen in bugzilla: http://bugzilla.gnome.org/show_bug.cgi?id=132260
> 
> this kind of code results in a segfault:
> 
> 	anchor = gtk_text_child_anchor_new ();
> 	g_object_unref (anchor);
> 
> basically, you decide not to use a new anchor and destroy it before 
> putting it into a textbuffer.  anchor->segment doesn't get set, and 
> gtk_text_child_anchor_finalize() barfs all over itself when it tries to 
> dereference NULL.
> 
> i created a patch that just checks for NULL before doing anything with 
> segment, and it seems to work fine.
> 
> however, it seems so obvious, and has never been a problem before, that 
> i wonder if i'm doing something that i really shouldn't have been 
> doing.  is it invalid to create a child anchor without a text buffer?
> 

See http://bugzilla.gnome.org/show_bug.cgi?id=70601 which seems to
complain about more or less the same thing.

Matthias

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