Error while compilation after porting.

[sab1234]

Hi,

I ported some c++ applications from HP-UX10.20 to HP-UX11.11. When I tried compiling the applications I got the following warning message:

passing arg 2 of `svc_sendreply' from incompatible pointer type

for the line:

(void) svc_sendreply(transp, xdr_void,(char *)NULL);

Can anyone please help me on this.

Thanks,
Anand.

 

[JasonDeckard]

The compiler doesn't like the data type of 'xdr_void'.

The prototype for scv_sendreply() is:

bool_t svc_sendreply(const SVCXPRT *xprt, const xdrproc_t outproc, const caddr_t out);

Check the definition of xdr_void. I suspect it may actually be a pointer that just needs dereferencing.

Hope that helps,
Jason Deckard

 

[sab1234]

Jason,

Thanks for your reply. But I don't find the definition of xdr_void in my code. Please find below the function from which I am getting this error:

static void
vatprog_1(rqstp, transp)
struct svc_req *rqstp;
register SVCXPRT *transp;
{
union {
CustomerInfo_parms customerinfo_1_arg;
ReportRequest_parms reportrequest_1_arg;
MailRequest_parms mailrequest_1_arg;
AddDeleteFeature_parms adddeletefeature_1_arg;
BalRequest_parms clm_account_bal_1_arg;
BillInfo_parms billinfo_1_arg;
OneTimePayment_parms onetimepayment_1_arg;
FeatureInfo_parms featureinfo_1_arg;
ESNChange_parms esnchange_1_arg;
GroupCallingInfo_parms groupcallinginfo_1_arg;
GroupCallingUpdate_parms groupcallingupdate_1_arg;
AcctBal_parms acctbal_1_arg;
RecurringCCPayment_parms recurringccpayment_1_arg;
NumberOfCCPayments_parms numberofccpayments_1_arg;
} argument;
char *result;
bool_t (*xdr_argument)(), (*xdr_result)();
char *(*local)();

_rpcsvccount++;
switch (rqstp->rq_proc) {
case NULLPROC:
(void) svc_sendreply(transp, xdr_void,
(char *)NULL);
_rpcsvccount--;
_rpcsvcstate = _SERVED;
return;

case CUSTOMERINFO:
xdr_argument = xdr_CustomerInfo_parms;
xdr_result = xdr_CustomerInfo_results;
local = (char *(*)()) customerinfo_1;
break;

case REPORTREQUEST:
xdr_argument = xdr_ReportRequest_parms;
xdr_result = xdr_ReportRequest_results;
local = (char *(*)()) reportrequest_1;
break;

case MAILREQUEST:
xdr_argument = xdr_MailRequest_parms;
xdr_result = xdr_MailRequest_results;
local = (char *(*)()) mailrequest_1;
break;

case ADDDELETEFEATURE:
xdr_argument = xdr_AddDeleteFeature_parms;
xdr_result = xdr_AddDeleteFeature_results;
local = (char *(*)()) adddeletefeature_1;
break;

case CLM_ACCOUNT_BAL:
xdr_argument = xdr_BalRequest_parms;
xdr_result = xdr_BalRequest_results;
local = (char *(*)()) clm_account_bal_1;
break;

case BILLINFO:
xdr_argument = xdr_BillInfo_parms;
xdr_result = xdr_BillInfo_results;
local = (char *(*)()) billinfo_1;
break;

case ONETIMEPAYMENT:
xdr_argument = xdr_OneTimePayment_parms;
xdr_result = xdr_OneTimePayment_results;
local = (char *(*)()) onetimepayment_1;
break;

case FEATUREINFO:
xdr_argument = xdr_FeatureInfo_parms;
xdr_result = xdr_FeatureInfo_results;
local = (char *(*)()) featureinfo_1;
break;

case ESNCHANGE:
xdr_argument = xdr_ESNChange_parms;
xdr_result = xdr_ESNChange_results;
local = (char *(*)()) esnchange_1;
break;

case GROUPCALLINGINFO:
xdr_argument = xdr_GroupCallingInfo_parms;
xdr_result = xdr_GroupCallingInfo_results;
local = (char *(*)()) groupcallinginfo_1;
break;

case GROUPCALLINGUPDATE:
xdr_argument = xdr_GroupCallingUpdate_parms;
xdr_result = xdr_GroupCallingUpdate_results;
local = (char *(*)()) groupcallingupdate_1;
break;

case ACCTBAL:
xdr_argument = xdr_AcctBal_parms;
xdr_result = xdr_AcctBal_results;
local = (char *(*)()) acctbal_1;
break;

case RECURRINGCCPAYMENT:
xdr_argument = xdr_RecurringCCPayment_parms;
xdr_result = xdr_RecurringCCPayment_results;
local = (char *(*)()) recurringccpayment_1;
break;

case NUMBEROFCCPAYMENTS:
xdr_argument = xdr_NumberOfCCPayments_parms;
xdr_result = xdr_NumberOfCCPayments_results;
local = (char *(*)()) numberofccpayments_1;
break;

default:
svcerr_noproc(transp);
_rpcsvccount--;
_rpcsvcstate = _SERVED;
return;
}
(void) memset((char *)&argument, 0, sizeof (argument));
if (!svc_getargs(transp, (char *)xdr_argument, (char *)&argument)) {
svcerr_decode(transp);
_rpcsvccount--;
_rpcsvcstate = _SERVED;
return;
}
result = (*local)(&argument, rqstp);
if (result != NULL && !svc_sendreply(transp, xdr_result, result)) {
svcerr_systemerr(transp);
}
if (!svc_freeargs(transp,xdr_argument, (char *)&argument)) {
_msgout("unable to free arguments"
exit(1);
}
_rpcsvccount--;
_rpcsvcstate = _SERVED;
return;
}

I am also getting the same warning for the functions svc_getargs and svc_freeargs.

Can you or anyone else please help me out on this. I am new in programming and don't have much idea about solving such kind of problems.

-Anand

 

[JasonDeckard]

I think the key to solving the problem with svc_sendreply() is to find the definition for xdr_void. It may be a global variable, a typedef, or preprocessor definition.

It may seem a bit daunting since you're new to programming, but I won't be able to provide any specific help until I can see how xdr_void is defined.

Perhaps you can grep for the definition of xdr_void?


Good luck,

Jason

 

[sab1234]

Jason,

I get the same warning message for the following lines also:

if (!svc_getargs(transp, xdr_argument, (char *)&argument))

if (result != NULL && !svc_sendreply(transp, xdr_result, result))

here xdr_argument and xdr_result are defined as:

bool_t (*xdr_argument)(), (*xdr_result)();

Can you please tell me how do I resolve the problem for these cases.

Thanks,
-Anand

 

[JasonDeckard]

xdr_argument and xdr_result are being declared the same way that xdrproc_t is; however, they are not of type xdrproc_t (which is what svc_getargs() and svc_sendreply() are expecting).

Try defining xdr_argument and xdr_result as:

xdrproc_t xdr_argument, xdr_result;

 

[sab1234]

Thanks Jason,

After defining the xdr_argument, xdr_result and xdr_void as xdrproc_t, I have got rid of the previous error but Now I am getting the following warning message:

warning: assignment from incompatible pointer type

for the lines:

xdr_argument = xdr_CustomerInfo_parms;
xdr_result = xdr_CustomerInfo_results;

Any help will be highly appreciated.

-Anand.

 

[gasingh]

Try typecasting the arguments in the code,

xdr_argument = (const xdrproc_t)xdr_CustomerInfo_parms;
xdr_result = (const xdrproc_t)xdr_CustomerInfo_results;

I think this shall remove the warning but do confirm if the definition of "const xdrproc_t" is something like "bool_t (*xdrproc_t)()".
Because if not, this is a serious problem and you might get problems on run time.

 

[sab1234]

Thanks Jason

Hi,

I am getting the following warning messages while compiling some C codes in HP-UX10.20:

warning: passing arg 3 of pointer to function from incompatible pointer type
warning: passing arg 5 of pointer to function from incompatible pointer type

for the line:

if (clnt_call(clnt, REPORTREQUEST, xdr_ReportRequest_axysresults, (char
*)argp, xdr_ReportRequest_retcode, (char *)&res, TIMEOUT) != RPC_SUCCESS)

I am aware that xdr_ReportRequest_axysresults(3rd argument) and xdr_ReportRequest_retcode(5th argument)should be of the type xdproc_t.

In my case they are defined as
bool_t xdr_CustomerInfo_axysresults(); and
bool_t xdr_ReportRequest_retcode();

When I try to define the arguments as
xdrproc_t xdr_CustomerInfo_axysresults; or
xdrproc_t xdr_ReportRequest_retcode;

I get the following error:

error: 'xdrproc_t' is used as a type, but is not defined as a type.

Can you please help me out on this.

Thanks,
Anand.