Although less probable, seen in pack documentation:

If your system has a strange pointer size (i.e. a pointer is neither as big as an int nor as big as a long), it may not be possible to pack or unpack pointers in big- or little-endian byte order. Attempting to do so will result in a fatal error.

In reply to Re^3: C-like Pointers (unpack) by przemo
in thread C-like Pointers by DerHartmut

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