1  #include <dlfcn.h>
       2  #include <stdio.h>
       3  #include <stdlib.h>
       4  
       5  
       6  static int
       7  do_test (void)
       8  {
       9    static const char modname[] = "tst-tlsmod2.so";
      10    int result = 0;
      11    int *foop;
      12    int *foop2;
      13    int (*fp) (int, int *);
      14    void *h;
      15  
      16    h = dlopen (modname, RTLD_LAZY);
      17    if (h == NULL)
      18      {
      19        printf ("cannot open '%s': %s\n", modname, dlerror ());
      20        exit (1);
      21      }
      22  
      23    foop = dlsym (h, "foo");
      24    if (foop == NULL)
      25      {
      26        printf ("cannot get symbol 'foo': %s\n", dlerror ());
      27        exit (1);
      28      }
      29  
      30    *foop = 42;
      31  
      32    fp = dlsym (h, "in_dso");
      33    if (fp == NULL)
      34      {
      35        printf ("cannot get symbol 'in_dso': %s\n", dlerror ());
      36        exit (1);
      37      }
      38  
      39    result |= fp (42, foop);
      40  
      41    foop2 = dlsym (h, "foo");
      42    if (foop2 == NULL)
      43      {
      44        printf ("cannot get symbol 'foo' the second time: %s\n", dlerror ());
      45        exit (1);
      46      }
      47  
      48    if (foop != foop2)
      49      {
      50        puts ("address of 'foo' different the second time");
      51        result = 1;
      52      }
      53    else if (*foop != 16)
      54      {
      55        puts ("foo != 16");
      56        result = 1;
      57      }
      58  
      59    dlclose (h);
      60  
      61    return result;
      62  }
      63  
      64  
      65  #include <support/test-driver.c>