Comment 4 for bug 885393

Thank you for the bug report. I've confirmed this with gcc-linaro-4.6-2011.10 on ARM:

michaelh@ursa4:~/linaro/bugs$ /tools/toolchains/arch/armv7l/gcc-linaro-4.6-2011.10-armv7l-natty-cbuild186-ursa3-cortexa9r1/bin/gcc -O3 -S imgconvert.c
imgconvert.c: In function 'yuv420p_to_yuv422':
imgconvert.c:32:1: internal compiler error: in neon_disambiguate_copy, at config/arm/arm.c:20315

The work-around is to compile at -O3 or to disable the vectoriser using -fno-tree-vectorize. This fault exists but is not exposed in gcc-linaro-4.6-2011.09.