Hi, all! As for our last discussion re buffure overflows, I had to take time to think and do homework, after which I feel more sympathetic to what you have said - stack execution protection truly isn't all. NOW; I was asked from GCC team whether the RotateLeft/RotateRight bug is still present in their middle-end/back-end, and I am unable to tell without trying to recompile implementation attempt in PASCAL with newest backend (3.4.5, as it seem that GPC still does not support 4.0.2 :-( However, it appears that predef.h is missing from gpc-yyyymmdd/p subtree. On surface, it appears to be replaced by predef.def. I am not sure if the mechanism of definition of primitives is the same as the previous one in predef.h, so I am asking because you of course know more. Thank you very much in forward. Best regards, Mirsad "Tvrdim da bi se napetost izmedju znanosti i vjere trebala rijesiti njihovom sintezom, a ne odbacivanjem ili podvojenoscu." Pierre Teilhard de Chardin (1881-1955)