GCC update for testing
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 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. ___ freebsd-toolchain@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to freebsd-toolchain-unsubscr...@freebsd.org
Re: GCC update for testing
On 2012-05-17 17:44, 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 It may be my imagination but the patch seems to be causing more warnings than usual and it breaks the kernel here: ... ../../../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 These warnings seem wrong, upon casual inspection of the code. In any case, if you compile the same file with gcc 4.7, they don't appear. :) Any idea which particular gcc fix is responsible for them? As a workaround, we could set all those variable to some reasonable value, but that feels like a cheap trick to me... But I'd rather just not import the fix that causes those warnings. ___ freebsd-toolchain@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to freebsd-toolchain-unsubscr...@freebsd.org
Re: GCC update for testing
Hi Dimitry; On 05/17/12 11:44, Dimitry Andric wrote: On 2012-05-17 17:44, 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 It may be my imagination but the patch seems to be causing more warnings than usual and it breaks the kernel here: ... ../../../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 These warnings seem wrong, upon casual inspection of the code. In any case, if you compile the same file with gcc 4.7, they don't appear. :) Any idea which particular gcc fix is responsible for them? As a workaround, we could set all those variable to some reasonable value, but that feels like a cheap trick to me... But I'd rather just not import the fix that causes those warnings. I will have to dig deeper into the changes to see what causes this. In any case I do agree and the patch will not be committed. Ultimately I can just leave the list around and we bring them in only as needed. Pedro. ___ freebsd-toolchain@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to freebsd-toolchain-unsubscr...@freebsd.org
