text: #include <dlfcn.h>
  #include <mcheck.h>
  #include <stdio.h>
  #include <stdlib.h>
  
  typedef int (*fn)(void);
  #define CHUNKS 1024
  #define REPEAT 64
  
  int
  main (void)
  {
    void *h1;
    void *h2;
    fn **foopp;
    fn bar, baz;
    int i, j;
    int n;
    void *allocs[REPEAT][CHUNKS];
  
    mtrace ();
  
    /* Open the two objects.  */
    h1 = dlopen ("reldep6mod3.so", RTLD_LAZY);
    if (h1 == NULL)
      {
        printf ("cannot open reldep6mod3.so: %s\n", dlerror ());
        exit (1);
      }
  
    foopp = dlsym (h1, "foopp");
    if (foopp == NULL)
      {
        printf ("cannot get address of \"foopp\": %s\n", dlerror ());
        exit (1);
      }
    n = (**foopp) ();
    if (n != 20)
      {
        printf ("(**foopp)() return %d, not return 20\n", n);
        exit (1);
      }
  
    h2 = dlopen ("reldep6mod4.so", RTLD_LAZY);
    if (h2 == NULL)
      {
        printf ("cannot open reldep6mod4.so: %s\n", dlerror ());
        exit (1);
      }
  
    baz = dlsym (h2, "baz");
    if (baz == NULL)
      {
        printf ("cannot get address of \"baz\": %s\n", dlerror ());
        exit (1);
      }
    if (baz () != 31)
      {
        printf ("baz() did not return 31\n");
        exit (1);
      }
  
    if (dlclose (h1) != 0)
      {
        printf ("closing h1 failed: %s\n", dlerror ());
        exit (1);
      }
  
    /* Clobber memory.  */
    for (i = 0; i < REPEAT; ++i)
      for (j = 0; j < CHUNKS; ++j)
        allocs[i][j] = calloc (1, j + 1);
  
    bar = dlsym (h2, "bar");
    if (bar == NULL)
      {
        printf ("cannot get address of \"bar\": %s\n", dlerror ());
        exit (1);
      }
    if (bar () != 40)
      {
        printf ("bar() did not return 40\n");
        exit (1);
      }
  
    baz = dlsym (h2, "baz");
    if (baz == NULL)
      {
        printf ("cannot get address of \"baz\": %s\n", dlerror ());
        exit (1);
      }
    if (baz () != 31)
      {
        printf ("baz() did not return 31\n");
        exit (1);
      }
  
    for (i = 0; i < REPEAT; ++i)
      for (j = 0; j < CHUNKS; ++j)
        free (allocs[i][j]);
  
    if (dlclose (h2) != 0)
      {
        printf ("closing h2 failed: %s\n", dlerror ());
        exit (1);
      }
  
    return 0;
  }
  