1  #include <dlfcn.h>
       2  #include <mcheck.h>
       3  #include <stdio.h>
       4  #include <stdlib.h>
       5  
       6  int
       7  main (void)
       8  {
       9    void *h[2];
      10    int fail;
      11    int (*fp) (void);
      12  
      13    mtrace ();
      14  
      15    h[0] = dlopen ("ltglobmod1.so", RTLD_LAZY);
      16    if (h[0] == NULL)
      17      {
      18        printf ("%s: cannot open %s: %s\n",
      19  	      __FUNCTION__, "ltglobmod1.so", dlerror ());
      20        exit (EXIT_FAILURE);
      21      }
      22    h[1] = dlopen ("ltglobmod2.so", RTLD_LAZY);
      23    if (h[1] == NULL)
      24      {
      25        printf ("%s: cannot open %s: %s\n",
      26  	      __FUNCTION__, "ltglobmod2.so", dlerror ());
      27        exit (EXIT_FAILURE);
      28      }
      29  
      30    puts ("loaded \"ltglobmod1.so\" without RTLD_GLOBAL");
      31  
      32    fp = dlsym (h[1], "foo");
      33    if (fp == NULL)
      34      {
      35        printf ("cannot get address of `foo': %s\n", dlerror ());
      36        exit (EXIT_FAILURE);
      37      }
      38  
      39    fail = fp ();
      40  
      41    puts ("back in main");
      42  
      43    dlclose (h[1]);
      44    dlclose (h[0]);
      45  
      46    return fail;
      47  }