D:\pscrpt\storable>perl -MMath::BigInt::Calc -MMath::BigInt -MStorable -Mwarnings -le "$ret = Storable::retrieve('file.s'); print $$ret; print ref($$ret);"
Cannot restore overloading on ARRAY(0x23df904) (package Math::BigInt::Calc) (even after a "require Math::BigInt::Calc;") at C:/_32/ap1600/lib/Storable.pm line 380, at -e line 1.