Re: Can't build FreeBSD-head with CLANG

-- Eir Nym


On 29 August 2012 12:41, Eir Nym <eirnym_at_gmail.com> wrote:
> -- Eir Nym
>
>
> On 29 August 2012 01:19, Dimitry Andric <dim_at_freebsd.org> wrote:
>> On 2012-08-28 23:05, Eir Nym wrote:
>> ...
>>
>>> This one for example:
>>> cc -c -O2 -pipe -fno-strict-aliasing  -std=c99  -Wall
>>> -Wredundant-decls -Wnested-externs -Wstrict-prototypes
>>> -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef
>>> -Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs
>>> -fdiagnostics-show-option  -Wno-error-tautological-compare
>>> -Wno-error-empty-body  -Wno-error-parentheses-equality -nostdinc  -I.
>>> -I/usr/head/src/sys -I/usr/head/src/sys/contrib/altq -D_KERNEL
>>> -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h
>>> -fno-omit-frame-pointer -mno-aes -mno-avx -mcmodel=kernel
>>> -mno-red-zone -mno-mmx -mno-sse -msoft-float
>>> -fno-asynchronous-unwind-tables -ffreestanding -fstack-protector
>>> -Werror  /usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c
>>> -I/usr/head/src/sys/gnu/fs/xfs/FreeBSD
>>> -I/usr/head/src/sys/gnu/fs/xfs/FreeBSD/support
>>> -I/usr/head/src/sys/gnu/fs/xfs
>>> /usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:11: error: variable
>>> 'fbno' is used uninitialized whenever 'if' condition is false
>>> [-Werror,-Wsometimes-uninitialized]
>>>          else if (args->minlen == 1 && args->alignment == 1 && !args->isfl
>>> &&
>>>
>>> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>>
>> Weird, how are you building the xfs module?  It has WERROR= in its
>> Makefile, so the '-Werror' option above should not be there.  This is
>> because the XFS code was imported more than 6 years ago, and is very
>> unlikely to ever be fixed. :)
>
> head SVN revision 239793,
> http://eroese.org/_/_/pub/bsd/GENERIC_PF.amd64 — kernel config
http://eroese.org/_/_/pub/bsd/kernel.amd64.GENERIC_PF — full logs for it.