memory freeing necessary?

[Andre Puschmann]

David Zeuthen wrote:
> Indeed it is. The pattern we're trying to use is that the caller frees
> anything it callee returns unless it's explicitly marked as const. We
> also try to document this in libhal and libhal-storage, patches welcome
> to improve the documentation.

hi guys,
i did a lot of testing and debugging last time and somehow i am a bit
confused about how it worked.
if i try to handle every error that for instance libhal_ctx_init() can
produce (if hald is not running) and free all memory that was allocated
until this point my app crashes all time with a segfault in
dbus_connection_remove_filter() in libdbus.
if dbus is not running than it looks like described here
https://bugzilla.ubuntu.com/show_bug.cgi?id=12250.
on the other hand if i don't free anything (just in case everything is
ok, like lshal) my app does not crash. but if i restart hald while my
app is running i get an dbus error "org.freedesktop.DBus.Error.NoReply:
No reply within specified time". after a further restart of my app
everything works fine.
i don't know which method to use in order to handle errors correctly and
to provide availability of the functions that use libhal.

any hints?

regard
andre