Blame elf/reldep5.c

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#include <dlfcn.h>
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#include <mcheck.h>
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#include <stdio.h>
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#include <stdlib.h>
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int
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main (void)
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{
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  void *h1;
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  void *h2;
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  int (*fp) (void);
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  mtrace ();
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  /* Open the two objects.  */
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  h1 = dlopen ("reldepmod5.so", RTLD_LAZY);
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  if (h1 == NULL)
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    {
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      printf ("cannot open reldepmod5.so: %s\n", dlerror ());
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      exit (1);
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    }
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  h2 = dlopen ("reldepmod6.so", RTLD_LAZY);
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  if (h2 == NULL)
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    {
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      printf ("cannot open reldepmod6.so: %s\n", dlerror ());
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      exit (1);
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    }
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  /* Get the address of the variable in reldepmod1.so.  */
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  fp = dlsym (h2, "bar");
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  if (fp == NULL)
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    {
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      printf ("cannot get address of \"bar\": %s\n", dlerror ());
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      exit (1);
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    }
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  /* Call the function.  */
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  puts ("calling fp for the first time");
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  if (fp () != 0)
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    {
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      puts ("function \"call_me\" returned wrong result");
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      exit (1);
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    }
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  /* Now close the first object.  It must still be around since we have
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     an implicit dependency.  */
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  if (dlclose (h1) != 0)
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    {
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      printf ("closing h1 failed: %s\n", dlerror ());
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      exit (1);
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    }
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  /* Calling the function must still work.  */
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  puts ("calling fp for the second time");
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  if (fp () != 0)
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    {
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      puts ("function \"call_me\" the second time returned wrong result");
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      exit (1);
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    }
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  puts ("second call suceeded as well");
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  /* Close the second object, we are done.  */
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  if (dlclose (h2) != 0)
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    {
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      printf ("closing h2 failed: %s\n", dlerror ());
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      exit (1);
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    }
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  return 0;
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}