elf/tst-nodelete2.c

   1 #include "../dlfcn/dlfcn.h"
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <gnu/lib-names.h>
   5
   6 static int
   7 do_test (void)
   8 {
   9   int result = 0;
  10
  11   printf ("\nOpening pthread library.\n");
  12   void *pthread = dlopen (LIBPTHREAD_SO, RTLD_LAZY);
  13
  14   /* This is a test for correct DF_1_NODELETE clearing when dlopen failure
  15      happens.  We should clear DF_1_NODELETE for failed library only, because
  16      doing this for others (e.g. libpthread) might cause them to be unloaded,
  17      that may lead to some global references (e.g. __rtld_lock_unlock) to be
  18      broken.  The dlopen should fail because of undefined symbols in shared
  19      library, that cause DF_1_NODELETE to be cleared.  For libpthread, this
  20      flag should be set, because if not, SIGSEGV will happen in dlclose.  */
  21   if (dlopen ("tst-nodelete2mod.so", RTLD_NOW) != NULL)
  22     {
  23       printf ("Unique symbols test failed\n");
  24       result = 1;
  25     }
  26
  27   if (pthread)
  28     dlclose (pthread);
  29
  30   if (result == 0)
  31     printf ("SUCCESS\n");
  32
  33   return result;
  34 }
  35
  36 #define TEST_FUNCTION do_test ()
  37 #include "../test-skeleton.c"