Incompatibel ?

[RedNuX]

habe mit folgendem code schwierigkeiten, aber für mich irgendwie unverständlich,

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <rpc/rpc.h>
#include <netdb.h>

extern struct sockaddr_in *saddr;

int
check_rpc_service(long program)
{
	int sock = RPC_ANYSOCK;
	CLIENT *client;
	struct timeval timeout;
	enum clnt_stat cstat;

	timeout.tv_sec = 10;
	timeout.tv_usec = 0;
	client = clntudp_create(saddr, program, 1, timeout, &sock);
	if(!client)
		return -1;
	timeout.tv_sec = 10;
	timeout.tv_usec = 0;
	cstat = RPC_TIMEDOUT;
	cstat = clnt_call(client, 0, xdr_void, NULL, xdr_void, NULL, timeout);
	if(cstat == RPC_TIMEDOUT)
	{
		timeout.tv_sec = 10;
		timeout.tv_usec = 0;
		cstat = clnt_call(client, 0, xdr_void, NULL, xdr_void, NULL, timeout);
	}
	clnt_destroy(client);
	close(sock);
	if(cstat == RPC_SUCCESS)
		return 1;
	else if(cstat == RPC_PROGVERSMISMATCH)
		return 1;
	else return 0;
}

Fehlermeldung:

root@lian tmp # gcc -c checkrpc.c
checkrpc.c: In function `check_rpc_service':
checkrpc.c:27: warning: passing arg 3 of pointer to function from incompatible pointer type
checkrpc.c:27: warning: passing arg 5 of pointer to function from incompatible pointer type
checkrpc.c:32: warning: passing arg 3 of pointer to function from incompatible pointer type
checkrpc.c:32: warning: passing arg 5 of pointer to function from incompatible pointer type
root@lian tmp #

27 = cstat = clnt_call(client, 0, xdr_void, NULL, xdr_void, NULL, timeout);
32 = cstat = clnt_call(client, 0, xdr_void, NULL, xdr_void, NULL, timeout);

[dakjo]

Müsste es nicht heissen

27 = cstat = clnt_call(client, 0, (void *)&xdr_void, NULL, (void *)&xdr_void, NULL, timeout); 
32 = cstat = clnt_call(client, 0, (void *)&xdr_void, NULL, (void *)&xdr_void, NULL, timeout);

Oder hab ich mich verzählt ?

[RedNuX]

das funzt super -danke-, nur warum? *grübel*

[dakjo]

Vielleicht weil es void Zeiger sind ?