Blame elf/ltglobmod2.c

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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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extern int bar (void);
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extern int foo (void);
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int
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foo (void)
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{
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  void *h;
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  int res;
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  /* Load ltglobalmod1 in the global namespace.  */
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  h = dlopen ("ltglobmod1.so", RTLD_GLOBAL | RTLD_LAZY);
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  if (h == NULL)
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    {
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      printf ("%s: cannot open %s: %s",
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	      __FUNCTION__, "ltglobmod1.so", dlerror ());
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      exit (EXIT_FAILURE);
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    }
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  /* Call bar.  This is undefined in the DSO.  */
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  puts ("about to call `bar'");
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  fflush (stdout);
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  res = bar ();
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  printf ("bar returned %d\n", res);
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  dlclose (h);
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  return res != 42;
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}