Description of problem:
When the binary is linked with libncurses(-lncurses), shmat() call failes with -
1 trying to attach to an allocated shared memory segment.

The shared memory segment was allocated and attached by a binary "a".
shmat() was called by a binary "b" using the same shmid and shmkey and the same 
attached address returned by binary "a".

The problem does not reproduce when the binary "b" was not linked with 
libncurses.

Version-Release number of selected component (if applicable):


How reproducible:
every time

Steps to Reproduce:
1.compile binary a (gcc3 -o a a.c)
2.compile binary b with -lncurses (gcc3 -o b b.c -lncurses)
3.run b with the address from a
    
Actual results:
0xffffffffffffffff from b

Expected results:
valid address

Additional info:
a.c:
-----
#include <stdio.h>
#include <sys/types.h>
#include <sys/shm.h>

main()
{

unsigned int segsize = 512*1024;
int                     shmid;
key_t               shmkey = 123456789;
void * adr;

shmid = shmget(shmkey, segsize,IPC_CREAT|0660);
adr = shmat(shmid, 0,0);

printf("shmid = %d  adr = %p\n",shmid, adr);
}


b.c:
-----
#include <stdio.h>
#include <stdlib.h>
#include<sys/types.h>
#include <sys/shm.h>

main(int argc, char **argv)
{
 void * addr1, * addr2;
key_t  shmkey = 123456789;
int shmid;

addr1 = (void*) strtoul(argv[1],NULL,0);
shmid = shmget(shmkey, 0, 0660);

addr2 = shmat(shmid, addr1, 0);
printf("addr2 = %p\n",addr2);
}

%gcc3 -o a a.c
%gcc3 -o b b.c
%gcc3 -o c b.c -lncurses

% ./a
shmid = 313556996 adr = 0x2000000000300000

%./b 0x2000000000300000
addr2 = 0x2000000000300000

%./c 0x2000000000300000
addr2 = 0xffffffffffffffff