elf/ltglobmod2.c

   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 }