elf/ltglobmod2.c

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