Xen devel - Apr 2006 - xen-unstable hg tree doesn''t compile: io_apic.c:127: warning: ‘prev’ is used uninitialized in this function

Hi,

the current hg tree doesn''t compile on x86.

gcc -O2 -fomit-frame-pointer -DNDEBUG -m32 -march=i686 -Wall -Wstrict-prototypes
-Wdeclaration-after-statement -nostdinc -fno-builtin -fno-common
-fno-strict-aliasing -iwithprefix include -Werror -Wno-pointer-arith -pipe
-I/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/include
-I/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/include/asm-x86/mach-generic
-I/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/include/asm-x86/mach-default
-msoft-float -g -D__XEN__ -c io_apic.c -o io_apic.o
cc1: warnings being treated as errors
io_apic.c: In function ‘ioapic_guest_write’:
io_apic.c:127: warning: ‘prev’ is used uninitialized in this function
make[5]: *** [io_apic.o] Error 1
make[5]: Leaving directory
`/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/arch/x86''
make[4]: ***
[/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/arch/x86/built_in.o] Error 2
make[4]: Leaving directory
`/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/arch/x86''
make[3]: *** [/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/xen] Error 2
make[3]: Leaving directory
`/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen''
make[2]: *** [install] Error 2
make[2]: Leaving directory
`/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen''
make[1]: *** [install-xen] Error 2
make[1]: Leaving directory
`/usr/src/xen/xen-unstable.hg-3.0-20060408.1''
make: *** [build-stamp] Error 2

I know, this is caused by the Werror flag. Can somebody remove this?

Thanks in advance,

Johnny

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On 8 Apr 2006, at 09:35, Hans-Christian Armingeon wrote:
> the current hg tree doesn''t compile on x86.
>
> gcc -O2 -fomit-frame-pointer -DNDEBUG -m32 -march=i686 -Wall  
> -Wstrict-prototypes -Wdeclaration-after-statement -nostdinc  
> -fno-builtin -fno-common -fno-strict-aliasing -iwithprefix include  
> -Werror -Wno-pointer-arith -pipe  
> -I/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/include  
> -I/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/include/asm-x86/ 
> mach-generic  
> -I/usr/src/xen/xen-unstable.hg-3.0-20060408.1/xen/include/asm-x86/ 
> mach-default -msoft-float -g -D__XEN__ -c io_apic.c -o io_apic.o
> cc1: warnings being treated as errors
> io_apic.c: In function ‘ioapic_guest_write’:
> io_apic.c:127: warning: ‘prev’ is used uninitialized in this function
This bug was fixed over the weekend. If you pull current tip then it  
should build okay.
> I know, this is caused by the Werror flag. Can somebody remove this?
That wouldn''t fix the actual bug, would it. :-)

  -- Keir


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