Re: Gtk2::TreePath broken on Debian?

[Torsten Schoenfeld <kaffeetisch gmx de>]

On 19.04.2010 22:34, Matthew Braid wrote:
> I thought paths were safe to carry around between changes, but iters
> were the things that lasted only a short time?

Both are rather equivalent in this regard.  Under the hood, both, 
GtkTreeIter and GtkTreePath, are "boxed" objects that are not 
ref-counted.  So there's no way for the bindings to say "I'm still using 
this object" to prevent others from invalidating it.  The $tpath that is 
handed to you in the foreach callback will in general be invalid after 
you returned from that callback.  By using $tpath->copy, you make a 
private copy that is valid as long as the variable holding it is in 
scope.  Alternatively, you could also serialize the path to a set of 
indices or to a string and then later recreate a path object from this data.

> Also, this code was working perfectly on FreeBSD, just not on Debian.
> Did a rule about the life of a path change between the versions I
> have?

Sounds like you were just lucky on FreeBSD.