http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56145
--- Comment #1 from Vincent <vchou79 at gmail dot com> 2013-01-31 13:40:36 UTC --- x86_64-w64-mingw32-gcc -Os -ffast-math -floop-parallelize-all -I. -std=gnu99 -c -o common/predict.o common/predict.c common/predict.c: In function 'x264_predict_16x16_dc_c': common/predict.c:58:6: internal compiler error: Segmentation fault void x264_predict_16x16_dc_c( pixel *src ) Just another example same error.