memset(cb, '\0', sizeof(*cb));
cb->aio_fildes = sfd;
cb->aio_lio_opcode = IOCB_CMD_PREAD;
- /*
- * The pointer has to be converted to unsigned value first to avoid
- * sign extension on cast to 64 bit value
- */
- cb->aio_buf = (uint64_t)(unsigned long)buf;
+ if (sizeof(buf) != sizeof(cb->aio_buf)) {
+ /*
+ * The pointer has to be converted to 32 bit unsigned value first
+ * to avoid sign extension on cast to 64 bit value
+ */
+ cb->aio_buf = (uint64_t)(unsigned long)buf;
+ } else {
+ cb->aio_buf = (uint64_t)buf;
+ }
cb->aio_offset = 0;
cb->aio_data = 0;
cb->aio_nbytes = len;