elf/next.c

   1 #include <stdio.h>
   2
   3
   4 extern int successful_rtld_next_test (void);
   5 extern void *failing_rtld_next_use (void);
   6
   7
   8 static int
   9 do_test (void)
  10 {
  11   int result;
  12   void *addr;
  13
  14   /* First try call a function which uses RTLD_NEXT and calls that
  15      function.  */
  16   result = successful_rtld_next_test ();
  17   if (result == 42)
  18     {
  19       puts ("RTLD_NEXT seems to work for existing functions");
  20       result = 0;
  21     }
  22   else
  23     {
  24       printf ("Heh?  `successful_rtld_next_test' returned %d\n", result);
  25       result = 1;
  26     }
  27
  28   /* Next try a function which tries to get a function with RTLD_NEXT
  29      but that fails.  This dlsym() call should return a NULL pointer
  30      and do nothing else.  */
  31   addr = failing_rtld_next_use ();
  32   if (addr == NULL)
  33     puts ("dlsym returned NULL for non-existing function.  Good");
  34   else
  35     {
  36       puts ("dlsym found something !?");
  37       result = 1;
  38     }
  39
  40   return result;
  41 }
  42
  43 #include <support/test-driver.c>