pub unsafe extern "C" fn s7_make_slot(
sc: *mut s7_scheme,
env: s7_pointer,
symbol: s7_pointer,
value: s7_pointer,
) -> s7_pointerpub unsafe extern "C" fn s7_make_slot(
sc: *mut s7_scheme,
env: s7_pointer,
symbol: s7_pointer,
value: s7_pointer,
) -> s7_pointer