pub unsafe extern "C" fn dwarf_next_unit( dwarf: *mut Dwarf, off: u64, next_off: *mut u64, header_sizep: *mut usize, versionp: *mut u16, abbrev_offsetp: *mut u64, address_sizep: *mut u8, offset_sizep: *mut u8, type_signaturep: *mut u64, type_offsetp: *mut u64) -> i32