pthread_barrier

[flareback]

I'm trying to implement barrier synchronization using pthread_barrier's. Can anyone show me how to implement them. I have

webStress.h

pthread_barrier_t *startLine;
 

main.c

#include "webStress.h"
#include <pthread.h>
....
if((pthread_barrier_init(startLine, NULL, 1)) == 0){ // 1 for testing
   fprintf(stderr, "pthread_barrier_init() failed\n");
   exit(0);
}
 

this code seg faults with the following message

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1209050944 (LWP 1309)]
0x002dab32 in pthread_barrier_init () from /lib/i686/nosegneg/libpthread.so.0
 

I'm running this on a linux box (not sure which distro cause it's a school box that I have to ssh into). Compiling with -lpthread which produces no errors and no warnings during compilation.
Any help would be much appreciated.