Symbol versioning errors in libthr

Daniel Eischen deischen at freebsd.org
Sun Feb 3 17:00:12 UTC 2008


On Sun, 3 Feb 2008, Dag-Erling Smørgrav wrote:

> Here's an excerpt from the RELENG_7 vs HEAD diff of libthr's symbol map:
>
> --- pthread.map	13 May 2007 14:12:39 -0000	1.18
> +++ pthread.map	20 Dec 2007 04:32:28 -0000	1.21
> @@ -84,9 +84,13 @@
> 	pthread_multi_np;
> 	pthread_mutex_destroy;
> 	pthread_mutex_getprioceiling;
> +	pthread_mutex_getspinloops_np;
> +	pthread_mutex_getyieldloops_np;
> 	pthread_mutex_init;
> 	pthread_mutex_lock;
> 	pthread_mutex_setprioceiling;
> +	pthread_mutex_setspinloops_np;
> +	pthread_mutex_setyieldloops_np;
> 	pthread_mutex_timedlock;
> 	pthread_mutex_trylock;
> 	pthread_mutex_unlock;
>
> These functions are all in FBSD_1.0, but they were introduced after the
> branch and never MFCed, so if I understand how we've implemented symbol
> versioning, they should be in FBSD_1.1.
>
> Unless someone argues credibly for keeping them in FBSD_1.0, I will move
> them to FBSD_1.1 in a few days.

Yes, I believe you are correct in how we've decided to implement
the version namespace.  After a branch from HEAD (e.g., after 7-
was branched), we increment the namespace and new symbols and
ABI changes get added to the new namespace.

-- 
DE


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