1  #include <dlfcn.h>
       2  #include <stdio.h>
       3  #include <stdlib.h>
       4  
       5  extern int bar (void);
       6  extern int foo (void);
       7  
       8  int
       9  foo (void)
      10  {
      11    void *h;
      12    int res;
      13  
      14    /* Load ltglobalmod1 in the global namespace.  */
      15    h = dlopen ("ltglobmod1.so", RTLD_GLOBAL | RTLD_LAZY);
      16    if (h == NULL)
      17      {
      18        printf ("%s: cannot open %s: %s",
      19  	      __FUNCTION__, "ltglobmod1.so", dlerror ());
      20        exit (EXIT_FAILURE);
      21      }
      22  
      23    /* Call bar.  This is undefined in the DSO.  */
      24    puts ("about to call `bar'");
      25    fflush (stdout);
      26    res = bar ();
      27  
      28    printf ("bar returned %d\n", res);
      29  
      30    dlclose (h);
      31  
      32    return res != 42;
      33  }