gcc/testsuite/obj-c++.dg/torture/tls/thr-init-1.mm

// { dg-do run }
// { dg-require-effective-target tls }
// { dg-add-options tls }

extern "C" {
extern void abort ();
}

static __thread int fstat = 1;

int test_code(int b)
{
  fstat += b ;
  return fstat;
}

int main (int ac, char *av[])
{
  int a = test_code(1);
  
  if ( a != 2 || fstat != 2 ) 
    abort ();
  
  return 0;
}