#include <stdio.h>

#ifndef N

#define N 0

#endif

#define CONCAT1(s, n) s##n

#define CONCAT(s, n) CONCAT1(s, n)

__thread int CONCAT (v, N) = 4;

int

CONCAT (tlsmod17a, N) (void)

{

  int *p = &CONCAT (v, N);

  /* GCC assumes &var is never NULL, add optimization barrier.  */

  asm volatile ("" : "+r" (p));

  if (p == NULL || *p != 4)

    {

      printf ("fail %d %p\n", N, p);

      return 1;

    }

  return 0;

}