Fixed in 2011.04:
michaelh@crucis:~/linaro/bugs$ /tools/toolchains/arch/x86_64/gcc-linaro-4.5-2011.04-0-x86_64-maverick-cbuild112-crucis-x86_64r1/bin/gcc -O2 -fno-omit-frame-pointer -c uipc_mbuf.i
Fixed in 2011.04:
michaelh@ crucis: ~/linaro/ bugs$ /tools/ toolchains/ arch/x86_ 64/gcc- linaro- 4.5-2011. 04-0-x86_ 64-maverick- cbuild112- crucis- x86_64r1/ bin/gcc -O2 -fno-omit- frame-pointer -c uipc_mbuf.i