[PATCH] bssgp: Fix call to llist_entry in fc_queue_timer_cfg

This is merely a historical archive of years 2008-2021, before the migration to mailman3.

A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.

Mike McTernan (wavemobile) mike.mcternan at wavemobile.com
Tue May 5 08:25:27 UTC 2015


> I still think we should revert the cast and see how C++ code complains 

Is anyone suggesting the cast should be kept?

In my view it would be a kind of madness to keep the cast - C is weakly typed as it is, so removing the little type checking we can get from the compiler is foolhardy and will just create subtle timewasting bugs.  C++ has better typing, generics and true OO, so I don't see why the cast should be present there, or that container_of should be particularly useful when better type-safety can be achieved.

> and then look at the compiler warning.

The particular warning I highlighted is the one fixed by Jacob's recent patch.  It's something of a proof as to how dangerous that cast is.  I'm happy to take a look at others if they can be found (hence I was wondering about Coverity, but it looks like we have to submit a change before we can get the results via Jenkins).

> As you were able to compile osmo-pcu (a C++ app
> that uses linked lists) it can’t be that bad.

Just to recap, I've complied and ran the following without any additional warnings or problems (though I've not ran all the tests, the libosmocore test all pass without the cast):

libdbi-0.9.0 libosmo-abis  libosmo-netif openggsn  osmo-bts  
libdbi-drivers-0.9.0  libosmocore   libosmo-sccp openbsc ortp-0.22.0  osmo-pcu sqlite-autoconf-3080802

There are many packages in the osmocom git - are there any other significant projects which should be checked?  Is there anything significant that Jenkins doesn't cover?

Kind Regards,

Mike


More information about the OpenBSC mailing list