[Bug regex/6722] sscanf bug when parsing lines from /proc/net/tcp

["halesh dot s at gmail dot com" <sourceware-bugzilla@sourceware.org>]

------- Additional Comments From halesh dot s at gmail dot com  2008-07-08 04:09 -------
(In reply to comment #4)
> Either use %8x:%4hx and kill the bogus casts, or you need to assign to
> int/unsigned int temporaries and copy to the short vars afterwards.

I have not changed the testcase as u mentioned, instead i exchanged the 
declaration order of ports...Now its working fine..

Please check the testcase

#include <stdio.h>
#include <sys/types.h>

int main()
{
        u_int32_t locaddr, remaddr, uid, inode = 0;

        /* changed the order of declaration in testcase provided by robert*/

        u_int16_t remport, locport;

        FILE *f;
        char big_str[256];

        f = fopen("/proc/net/tcp", "r");

        fgets(big_str,256,f);
        printf("%s\n", big_str);

        while(fgets(big_str,256,f) != NULL) {
                printf("%s\n", big_str);
                sscanf(big_str, "%*d: %8x:%4x %8x:%4x %*2x %*8x:%*8x %*2x:%*8x 
%*8x %d %*d %u \n",&locaddr, (unsigned int *) &locport, &remaddr, (unsigned int 
*) &remport,&uid, &inode);

                printf("LocAddr:%x LocPort:%x RemAddr:%x RemPort:%x uid:%d 
inode:%d\n",locaddr, locport, remaddr, remport, uid, inode);
        }
}

O/P is
........
........
53: C865582B:8116 CD65582B:0016 01 00000000:00000000 02:000082E4 00000000     
0        0 3258616 2 195aca80 202 40 0 2 -1  

LocAddr:c865582b LocPort:8116 RemAddr:cd65582b RemPort:16 uid:0 inode:3258616
........
........

Results are fine now.
It depends upon alignment of 16 bit variables or what???




-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at redhat dot com,
                   |                            |schwab at suse dot de


http://sourceware.org/bugzilla/show_bug.cgi?id=6722

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