Hi, The differences are pretty extensive. But I will try to weed through it and see if something jumps out. According to the .mesh.o.cmd file -fno-strict-overflow is also there. If it helps, I don't think 4.2.4 works either. I have not repeated the exact test (a 4.2.4 compiled mesh with 4.3.5 everything else) but I have tried to build the entire kernel with 4.2.4 and it behaved the same as 4.3.5. Any chance the list of changes is smaller (between 4.1.2 and 4.2.4)? Thanks! kevin On Wed, Feb 2, 2011 at 4:07 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote: > > Many many things changed. I would recommend looking at the code > generated by the two compilers to see if you can spot the key > difference. > > As a short in the dark, you said you use -fno-strict-aliasing; do you > also use -fno-strict-overflow? > > Ian > cmd_drivers/scsi/mesh.o := gcc -m32 -Wp,-MD,drivers/scsi/.mesh.o.d \ -nostdinc -isystem /opt/gcc-4.3.5-gnu/lib/gcc/powerpc-unknown-linux-gnu/4.3.5/include \ -I/mnt/mnt3/linux-2.6.36/arch/powerpc/include -Iinclude \ -include include/generated/autoconf.h -D__KERNEL__ \ -Iarch/powerpc -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration \ -Wno-format-security -fno-delete-null-pointer-checks -O2 -msoft-float \ -pipe -Iarch/powerpc -ffixed-r2 -mmultiple -mno-altivec -mno-spe -mspe=no \ -funit-at-a-time -mno-string -mcpu=powerpc -Wa,-maltivec -fno-stack-protector \ -fomit-frame-pointer -Wdeclaration-after-statement -Wno-pointer-sign \ -fno-strict-overflow -D"KBUILD_STR(s)=\#s" \ -D"KBUILD_BASENAME=KBUILD_STR(mesh)" \ -D"KBUILD_MODNAME=KBUILD_STR(mesh)" -c \ -o drivers/scsi/mesh.o drivers/scsi/mesh.c
