Updating an old C program which uses parilib

[Jack Fearnley <jack@alcor.concordia.ca>]

I am trying to run a program I wrote and ran successfully some years 
back.  It computes Dirichlet twists of elliptic L-functions.  The 
program uses  lisGEN which seems no longer to exist.  The usage is
ee = smallinitell(lisGEN(stdin));
where stdin contains [0,1,0,4,4] for example.

There seems to be no exact replacement for this function so I am using 
scanf to read the five coefficients as longs and then using mkvecn to 
package the coefficients into a vector.
scanf("%ld %ld %ld %ld %ld",&c1,&c2,&c3,&c4,&c5);
       printf("%ld %ld %ld %ld %ld \n",c1,c2,c3,c4,c5);
   eee=mkvecn(5,(GEN)c1,(GEN)c2,(GEN)c3,(GEN)c4,(GEN)c5);
   ee = smallinitell(eee);

Where ee and eee are defined as GEN.

The printed result is


0 1 0 4 4

 ***   segmentation fault: bug in PARI or calling program.
 ***   Error in the PARI system. End of program.

1) Is there an exact replacement for lisGEN?

2) Am I doing something stupid?

In previous variations to solve this problem  I have encountered stack 
overflow and an 'undefined' gzero.

3) Where did gzero go?

Any help would be greatly appreciated.

Best regards,
                    Jack Fearnley