git: Add -Werror to the kernel build.

[Joel K. Pettersson]

On Tue, Dec 15, 2009 at 2:52 PM, Sascha Wildner
<swildner at crater.dragonflybsd.org> wrote:
>
> commit 40ec0564adaa677a0dab5299bdd491a2245e94a0
> Author: Sascha Wildner <saw at online.de>
> Date:   Tue Dec 15 15:52:07 2009 +0100
>
>    Add -Werror to the kernel build.
> [...]

I'd guess the following is probably related to this. Anyhow:

A user following the development changes of DragonFly, I noted that
building the kernel now errors out due to warnings of unused variables
- the ones in question being used only by debug code (KKASSERT, etc.),
and my kernel config disabling debug options.

The following files have these warnings:

sys/kern/kern_lock.c
sys/kern/kern_sig.c
sys/kern/lwkt_thread.c
sys/kern/vfs_cache.c
sys/kern/vfs_syscalls.c
sys/vfs/nfs/nfs_vnops.c
sys/vfs/hammer/hammer_object.c
sys/vfs/hammer/hammer_subs.c
sys/platform/pc32/i386/pmap.c

I don't know if these fit the preferred style of solving this, but
diffs to remove the warnings (mostly adding #ifdef INVARIANTS) to make
it build attached. At any rate, having a look at it will quickly show
where it's located.

-- 
 Joel K. Pettersson
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