Date: Wed, 29 Aug 2012 01:05:21 +0400 From: Eir Nym <eirnym@gmail.com> To: Dimitry Andric <dim@freebsd.org> Cc: FreeBSD Mail Lists <freebsd-current@freebsd.org> Subject: Re: Can't build FreeBSD-head with CLANG Message-ID: <CAO8GK0qpK=S1qhq3mPP6AXpgg15Wop=ghPRpD=e7MudvPBsx1w@mail.gmail.com> In-Reply-To: <503D29F4.1030804@FreeBSD.org> References: <CAO8GK0pQCqAJ--NkfXm%2Bc7%2Bs-_REGA3b4%2BJgao4pmE9gCo_qzA@mail.gmail.com> <503D12CB.4000208@FreeBSD.org> <CAO8GK0qHZPnpCa0zBiXYtghObAmsoe%2Bzkd0tDMQ=2VWdX_8JMg@mail.gmail.com> <503D29F4.1030804@FreeBSD.org>
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-- Eir Nym
On 29 August 2012 00:28, Dimitry Andric <dim@freebsd.org> wrote:
> On 2012-08-28 21:51, Eir Nym wrote:
>>
>> On 28 August 2012 22:49, Dimitry Andric <dim@freebsd.org> wrote:
>>>
>>> On 2012-08-28 18:31, Eir Nym wrote:
>>> What is the error you were getting on amd64?
>>
>> i386 never failed, amd64 =E2=80=94 always
>
>
> Please post the *exact* error message, otherwise I will not be able to
> help you.
>
This one for example:
cc -c -O2 -pipe -fno-strict-aliasing -std=3Dc99 -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=3Dkernel
-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 =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=
~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1492:11: note: uninitialized
use occurs here
*fbnop =3D fbno;
^~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:7: note: remove the 'if'
if its condition is always true
else if (args->minlen =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=
~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:11: error: variable
'fbno' is used uninitialized whenever '&&' condition is false
[-Werror,-Wsometimes-uninitialized]
else if (args->minlen =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1492:11: note: uninitialized
use occurs here
*fbnop =3D fbno;
^~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:11: note: remove the
'&&' if its condition is always true
else if (args->minlen =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~=
~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:11: error: variable
'fbno' is used uninitialized whenever '&&' condition is false
[-Werror,-Wsometimes-uninitialized]
else if (args->minlen =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1492:11: note: uninitialized
use occurs here
*fbnop =3D fbno;
^~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:11: note: remove the
'&&' if its condition is always true
else if (args->minlen =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:11: error: variable
'fbno' is used uninitialized whenever '&&' condition is false
[-Werror,-Wsometimes-uninitialized]
else if (args->minlen =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1492:11: note: uninitialized
use occurs here
*fbnop =3D fbno;
^~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1449:11: note: remove the
'&&' if its condition is always true
else if (args->minlen =3D=3D 1 && args->alignment =3D=3D 1 && !args=
->isfl &&
^~~~~~~~~~~~~~~~~~~~
/usr/head/src/sys/gnu/fs/xfs/xfs_alloc.c:1430:20: note: initialize the
variable 'fbno' to silence this warning
xfs_agblock_t fbno;
^
=3D 0
4 errors generated.
*** [xfs_alloc.o] Error code 1
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