read_bfraction    656 libavcodec/vc1.c         if (read_bfraction(v, gb) < 0)
read_bfraction    945 libavcodec/vc1.c             if (read_bfraction(v, gb) < 0)
read_bfraction    958 libavcodec/vc1.c             if (read_bfraction(v, gb) < 0)
read_bfraction   1205 libavcodec/vc1.c             if (read_bfraction(v, gb) < 0)