Re: Can't build FreeBSD-head with CLANG

-- 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