Comment 3 for bug 731665

Ok this appears to be reproducible on 4.5.2-5ubuntu2 as well:

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/powerpc-linux-gnu/4.5.2/lto-wrapper
Target: powerpc-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.5.2-5ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-4.5/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.5 --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.5 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-gold --enable-ld=default --with-plugin-ld=ld.gold --enable-objc-gc --enable-secureplt --disable-softfloat --enable-targets=powerpc-linux,powerpc64-linux --with-cpu=default32 --disable-werror --with-long-double-128 --enable-checking=release --build=powerpc-linux-gnu --host=powerpc-linux-gnu --target=powerpc-linux-gnu
Thread model: posix
gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-5ubuntu2)

This is the raw compile command line:

gcc -m64 -nostdinc -isystem /usr/lib/gcc/powerpc-linux-gnu/4.5.2/include -I/usr/src/linux-headers-lbm- -I/home/apw/build/ubuntu-natty/ubuntu-natty/arch/powerpc/include -Iinclude -I/home/apw/build/ubuntu-natty/ubuntu-natty/include -include include/generated/autoconf.h -Iubuntu/include -I/home/apw/build/ubuntu-natty/ubuntu-natty/ubuntu/include -I/home/apw/build/ubuntu-natty/ubuntu-natty/. -I. -D__KERNEL__ -I/home/apw/build/ubuntu-natty/ubuntu-natty/arch/powerpc -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 -fno-shrink-wrap -O2 -msoft-float -pipe -I/home/apw/build/ubuntu-natty/ubuntu-natty/arch/powerpc -Iarch/powerpc -mminimal-toc -mtraceback=none -mcall-aixdesc -mtune=power4 -mno-altivec -mno-spe -mspe=no -funit-at-a-time -fno-dwarf2-cfi-asm -mno-string -mno-sched-epilog -Wa,-maltivec -Wframe-larger-than=1024 -fno-stack-protector -fno-omit-frame-pointer -fno-optimize-sibling-calls -pg -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -DCC_HAVE_ASM_GOTO -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(bounds)" -D"KBUILD_MODNAME=KBUILD_STR(bounds)" -fverbose-asm -S -o kernel/bounds.s /home/apw/build/ubuntu-natty/ubuntu-natty/kernel/bounds.c