> Having a default can't work, as s-atopri.adb needs access to the flag. > Only the front end itself can use a default, not the run time.
Well, this means the current design is broken and s-atopri.adb needs to be modified. As we discussed, we cannot assume that System.Support_Atomic_Primitives exists, since there will always be some target system*.ads files around that don't have this flag (as shown by this discussion). For a run-time (as opposed to compiler) parameter, s-parame is probably a better place to start from, possibly using a separate. Arno
