RPC - conflicting types error - c

Question

I have the following .x file called paper.x . When I create a server in rpc in order to call the function the error below occurs
paperserverproc.c:23:5: error: conflicting types for ‘add_procedure_1_svc’
paper.h:46:15: note: previous declaration of ‘add_procedure_1_svc’ was here
#include <limits.h>
struct paper_saved{
char author_name[CHAR_MAX];
char paper_title[CHAR_MAX];
int paper_id;
char paper_file_name[CHAR_MAX];
char paper_content[CHAR_MAX];
};
struct paper_info_saved{
char author_name[CHAR_MAX];
char paper_title[CHAR_MAX];
int paper_id;
char paper_file_name[CHAR_MAX];
};
struct list_papers{
paper_saved paper;
struct list_papers *next;
};
program PAPER_PROGRAM
{
version PAPER_VERSION
{
int ADD_PROCEDURE(paper_saved) = 1; /* Procedure nb */
void LIST_PROCEDURE(void)=2;
paper_info_saved INFO_PROCEDURE(int)=3;
paper_saved FETCH_PROCEDURE(int)=4;
void REMOVE_PROCEDURE(int)=5;
} = 1; /* Version nb */
} = 0x20001234; /* Program number */
I call the procedure with this way and the line 23 is the line when I declare the function as below
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "paper.h"
#include <ctype.h>
#include <limits.h>
.......
int add_procedure_1_svc(paper_saved *paper_pointer, struct svc_req *rqstp)
This is the paper.h file generated by rpcgen and I dont know what's the problem in line 46 that it mentions
/*
* Please do not edit this file.
* It was generated using rpcgen.
*/
#ifndef _PAPER_H_RPCGEN
#define _PAPER_H_RPCGEN
#include <rpc/rpc.h>
#ifdef __cplusplus
extern "C" {
#endif
struct paper_saved {
char author_name[127];
char paper_title[127];
int paper_id;
char paper_file_name[127];
char paper_content[127];
};
typedef struct paper_saved paper_saved;
struct paper_info_saved {
char author_name[127];
char paper_title[127];
int paper_id;
char paper_file_name[127];
};
typedef struct paper_info_saved paper_info_saved;
struct list_papers {
paper_saved paper;
struct list_papers *next;
};
typedef struct list_papers list_papers;
#define PAPER_PROGRAM 0x20001234
#define PAPER_VERSION 1
#if defined(__STDC__) || defined(__cplusplus)
#define ADD_PROCEDURE 1
extern int * add_procedure_1(paper_saved *, CLIENT *);
extern int * add_procedure_1_svc(paper_saved *, struct svc_req *);
#define LIST_PROCEDURE 2
extern void * list_procedure_1(void *, CLIENT *);
extern void * list_procedure_1_svc(void *, struct svc_req *);
#define INFO_PROCEDURE 3
extern paper_info_saved * info_procedure_1(int *, CLIENT *);
extern paper_info_saved * info_procedure_1_svc(int *, struct svc_req *);
#define FETCH_PROCEDURE 4
extern paper_saved * fetch_procedure_1(int *, CLIENT *);
extern paper_saved * fetch_procedure_1_svc(int *, struct svc_req *);
#define REMOVE_PROCEDURE 5
extern void * remove_procedure_1(int *, CLIENT *);
extern void * remove_procedure_1_svc(int *, struct svc_req *);
extern int paper_program_1_freeresult (SVCXPRT *, xdrproc_t, caddr_t);
#else /* K&R C */
#define ADD_PROCEDURE 1
extern int * add_procedure_1();
extern int * add_procedure_1_svc();
#define LIST_PROCEDURE 2
extern void * list_procedure_1();
extern void * list_procedure_1_svc();
#define INFO_PROCEDURE 3
extern paper_info_saved * info_procedure_1();
extern paper_info_saved * info_procedure_1_svc();
#define FETCH_PROCEDURE 4
extern paper_saved * fetch_procedure_1();
extern paper_saved * fetch_procedure_1_svc();
#define REMOVE_PROCEDURE 5
extern void * remove_procedure_1();
extern void * remove_procedure_1_svc();
extern int paper_program_1_freeresult ();
#endif /* K&R C */
/* the xdr functions */
#if defined(__STDC__) || defined(__cplusplus)
extern bool_t xdr_paper_saved (XDR *, paper_saved*);
extern bool_t xdr_paper_info_saved (XDR *, paper_info_saved*);
extern bool_t xdr_list_papers (XDR *, list_papers*);
#else /* K&R C */
extern bool_t xdr_paper_saved ();
extern bool_t xdr_paper_info_saved ();
extern bool_t xdr_list_papers ();
#endif /* K&R C */
#ifdef __cplusplus
}
#endif
#endif /* !_PAPER_H_RPCGEN */
So the correct one .h file is
#include <limits.h>
struct paper_saved{
char author_name[CHAR_MAX];
char paper_title[CHAR_MAX];
int paper_id;
char paper_file_name[CHAR_MAX];
char paper_content[CHAR_MAX];
};
struct paper_info_saved{
char author_name[CHAR_MAX];
char paper_title[CHAR_MAX];
int paper_id;
char paper_file_name[CHAR_MAX];
};
struct list_papers{
paper_saved paper;
struct list_papers *next;
};
typedef int p_id;
program PAPER_PROGRAM
{
version PAPER_VERSION
{
p_id ADD_PROCEDURE(paper_saved) = 1; /* Procedure nb */
void LIST_PROCEDURE(void)=2;
paper_info_saved INFO_PROCEDURE(int)=3;
paper_saved FETCH_PROCEDURE(int)=4;
void REMOVE_PROCEDURE(int)=5;
} = 1; /* Version nb */
} = 0x20001234; /* Program number */

Answer 1

The function is declared as returning int:
int add_procedure_1_svc(paper_saved *paper_pointer, struct svc_req *rqstp)
but the extern as returning int*
extern int * add_procedure_1_svc(paper_saved *, struct svc_req *);
one of them must be wrong.

Answer 2

What does line 46 of file paper.h have? . Check the paper.h file on the line 46 to see if the function signature is same.Is it auto generated by rpcgen ?