Re: GCC update for testing

On (17/05/2012 10:44), Pedro Giffuni wrote:
> Hi;
> 
> I took a bunch of patches that were merged into the GCC 4.1 branch
> (under GPLv2) and prepared a patch for merging them into our base
> gcc. These are supposed to be bug fixes only.
> 
> You can get the patch here:
> http://people.freebsd.org/~pfg/patches/patch-contrib-gcc
> And, for those really interested, the log is here:
> http://people.freebsd.org/~pfg/patches/gcc41-pr-log

Could you check if patch fixes this issue:
http://marc.info/?l=freebsd-hackers&m=132348021530691&w=2

I've disabled gcc from base locally since discovering it.

Thanks,
Gleb.


> It may be my imagination but the patch seems to be causing more
> warnings than usual and it breaks the kernel here:
> 
> ____
> $ make
> cc -c -O2 -Os -pipe -fno-strict-aliasing -march=athlon64 -std=c99 -g 
> -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   -nostdinc  -I. -I../../.. 
> -I../../../contrib/altq -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include 
> opt_global.h -fno-common -finline-limit=8000 --param 
> inline-unit-growth=100 --param large-function-growth=1000  
> -fno-omit-frame-pointer -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse 
> -msoft-float  -fno-asynchronous-unwind-tables -ffreestanding 
> -fstack-protector -Werror  ../../../cam/scsi/scsi_sa.c
> cc1: warnings being treated as errors
> ../../../cam/scsi/scsi_sa.c: In function 'samount':
> ../../../cam/scsi/scsi_sa.c:1887: warning: 'comp_supported' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:1888: warning: 'write_protect' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:1887: warning: 'comp_enabled' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2728: warning: 'current_speed' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2728: note: 'current_speed' was declared here
> ../../../cam/scsi/scsi_sa.c:2727: warning: 'current_density' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2727: note: 'current_density' was declared here
> ../../../cam/scsi/scsi_sa.c:2725: warning: 'current_blocksize' may be 
> used uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2725: note: 'current_blocksize' was declared 
> here
> ../../../cam/scsi/scsi_sa.c:2728: warning: 'current_speed' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2728: note: 'current_speed' was declared here
> ../../../cam/scsi/scsi_sa.c:2725: warning: 'current_blocksize' may be 
> used uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2725: note: 'current_blocksize' was declared 
> here
> ../../../cam/scsi/scsi_sa.c:2728: warning: 'current_speed' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2728: note: 'current_speed' was declared here
> ../../../cam/scsi/scsi_sa.c:2725: warning: 'current_blocksize' may be 
> used uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2725: note: 'current_blocksize' was declared 
> here
> ../../../cam/scsi/scsi_sa.c:2728: warning: 'current_speed' may be used 
> uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2728: note: 'current_speed' was declared here
> ../../../cam/scsi/scsi_sa.c:2725: warning: 'current_blocksize' may be 
> used uninitialized in this function
> ../../../cam/scsi/scsi_sa.c:2725: note: 'current_blocksize' was declared 
> here
> *** Error code 1
> ...
> ____
> 
> Other stuff I tested (Apache OpenOffice) builds fine.
> 
> cheers,
> 
> Pedro.
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