differ in signedness error

rzarector · 10-02-2006, 08:36 AM

Good Morning,

I am trying to compile some c code (which compiled on Fedora Core 4 and CentOS) but now wont compile on Ubuntu.... This is the following error I am getting when I try to compile and I have alos posted the source code. Any Ideas?

lyoussef@lyoussef:~/Desktop/working code$ gcc chats.c
chats.c: In function ‘main’:
chats.c:55: warning: pointer targets in passing argument 3 of ‘accept’ differ in signedness
/tmp/ccJ5AgRk.o: In function `main':chats.c

.text+0x8f): undefined reference to `passivesock'
collect2: ld returned 1 exit status

*** SOURCE ***

Code:

/*  Wait for someone to chat with you */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include "sock.h"

#define QLEN 0
#define BUFSIZE 4096

extern int  errno;
//extern char *sys_errlist[];

int main( int argc, char *argv[] )
{
	char                *service;
	int                 rport = 0;
	struct sockaddr_in  fsin;
	int                 alen;
	int		sd, ssock;
	int		n;
	char		buffer[BUFSIZE];
   
	switch (argc)
	{
		case    1:
			rport = 1;
			break;
		case    2:
			service = argv[1];
			break;
		default:
			//errexit( "usage: chatd [port]\n" );
			printf("usuage: chatd [port]\n");
			exit (-1);
	}

	/*  Create the server socket */

	sd = PASSIVE_TCP( service, QLEN, &rport );
	if (rport)
	{
		/*  Tell the user the selected port  */
		printf( "chatd: port %d\n", rport );
		fflush( stdout );
	}


	/*  Wait for someone to show up and then establish a connection with them */
	alen = sizeof(fsin);
	
	ssock = accept(sd, (struct sockaddr *)&fsin, &alen );
	if (ssock < 0)
		// errexit("accept: %s\n", sys_errlist[errno]);
		exit (-1);

	/* Take turns with your partner */
	/* Enter "Q" to quit */

	for (;;)
	{
		if ( (n = read( ssock, buffer, BUFSIZE )) > 0 )
		{
		/*	printf( "Got a buffer." ); */
			;
		}

		else
		{
			close( ssock );
			break;
		}

	}

	close( sd );
		
}

Guttorm · 10-02-2006, 08:55 AM

Hi

Maybe change

Code:

int alen;

to

Code:

size_t alen;

rzarector · 10-02-2006, 09:01 AM

Quote:

Originally Posted by Guttorm

Hi

Maybe change

Code:

int alen;

to

Code:

size_t alen;

Thanks! that worked but now its not finding the sock.h header file with the definition for passivesocket

Code:

/tmp/cce1NHCC.o: In function `main':chats.c:(.text+0x8f): undefined reference to `passivesock'

and i am getting

Code:

lyoussef@lyoussef:~/Desktop/working code$ make
    Compiling chats.c . . .
    Compiling connectsock.c . . .
connectsock.c: In function ‘connectsock’:
connectsock.c:37: warning: incompatible implicit declaration of built-in function ‘bzero’
connectsock.c:49: warning: incompatible implicit declaration of built-in function ‘bcopy’
    Compiling passivesock.c . . .
passivesock.c: In function ‘passivesock’:
passivesock.c:37: warning: incompatible implicit declaration of built-in function ‘bzero’

KenJackson · 10-02-2006, 09:06 AM

BTW, your code will be easier to read in posts if you wrap your code in a [code] block, or highlight it and then click the the # icon.

Also, you can click Disable smilies in text under Additional Options below the editor to avoid those annoying smiley faces that replace your text. For example: :( :)

rzarector · 10-02-2006, 09:13 AM

Quote:

Originally Posted by KenJackson

BTW, your code will be easier to read in posts if you wrap your code in a [code] block, or highlight it and then click the the # icon.

Also, you can click Disable smilies in text under Additional Options below the editor to avoid those annoying smiley faces that replace your text. For example:

point noted and updated thanks

rzarector · 10-02-2006, 09:53 AM

I figured out the problem. Thanks all for your help!

xhi · 10-02-2006, 01:05 PM

Quote:

Originally Posted by KenJackson

Also, you can click Disable smilies in text under Additional Options below the editor to avoid those annoying smiley faces that replace your text. For example: :( :)

wow. i have never saw that hiding down there. thanks. :)