elf/tst-tls5.c

   1 #include <dlfcn.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4
   5
   6 static int
   7 do_test (void)
   8 {
   9   static const char modname[] = "tst-tlsmod2.so";
  10   int result = 0;
  11   int *foop;
  12   int *foop2;
  13   int (*fp) (int, int *);
  14   void *h;
  15
  16   h = dlopen (modname, RTLD_LAZY);
  17   if (h == NULL)
  18     {
  19       printf ("cannot open '%s': %s\n", modname, dlerror ());
  20       exit (1);
  21     }
  22
  23   foop = dlsym (h, "foo");
  24   if (foop == NULL)
  25     {
  26       printf ("cannot get symbol 'foo': %s\n", dlerror ());
  27       exit (1);
  28     }
  29
  30   *foop = 42;
  31
  32   fp = dlsym (h, "in_dso");
  33   if (fp == NULL)
  34     {
  35       printf ("cannot get symbol 'in_dso': %s\n", dlerror ());
  36       exit (1);
  37     }
  38
  39   result |= fp (42, foop);
  40
  41   foop2 = dlsym (h, "foo");
  42   if (foop2 == NULL)
  43     {
  44       printf ("cannot get symbol 'foo' the second time: %s\n", dlerror ());
  45       exit (1);
  46     }
  47
  48   if (foop != foop2)
  49     {
  50       puts ("address of 'foo' different the second time");
  51       result = 1;
  52     }
  53   else if (*foop != 16)
  54     {
  55       puts ("foo != 16");
  56       result = 1;
  57     }
  58
  59   dlclose (h);
  60
  61   return result;
  62 }
  63
  64
  65 #include <support/test-driver.c>