Hi all, I got this on uptodate Mingw Win 64 bits Squeak.cog.spur VM: (1to: 8) collect: [:i|-2942842961920 highBitOfMagnitude] -> #(6 6 42 42 42 42 42 42) That is correct once jitted, but wrong first two times... I just can't understand when/how it fails by reading the code... Any clue? Nicolas