elf/ifuncmain1.c

   1 /* Test STT_GNU_IFUNC symbols:
   2
   3    1. Direct function call.
   4    2. Function pointer.
   5    3. Visibility without override.
   6  */
   7
   8 #include <stdlib.h>
   9
  10 int global = -1;
  11
  12 int ret_foo;
  13 int ret_foo_hidden;
  14 int ret_foo_protected;
  15
  16 extern int foo (void);
  17 extern int foo_protected (void);
  18
  19 #ifndef FOO_P
  20 typedef int (*foo_p) (void);
  21 #endif
  22
  23 foo_p foo_ptr = foo;
  24 foo_p foo_procted_ptr = foo_protected;
  25
  26 extern foo_p get_foo_p (void);
  27 extern foo_p get_foo_hidden_p (void);
  28 extern foo_p get_foo_protected_p (void);
  29
  30 int
  31 main (void)
  32 {
  33   foo_p p;
  34
  35   if (foo_ptr != foo)
  36     abort ();
  37   if (foo () != -1)
  38     abort ();
  39   if ((*foo_ptr) () != -1)
  40     abort ();
  41
  42   if (foo_procted_ptr != foo_protected)
  43     abort ();
  44   if (foo_protected () != 0)
  45     abort ();
  46   if ((*foo_procted_ptr) () != 0)
  47     abort ();
  48
  49   p = get_foo_p ();
  50   if (p != foo)
  51     abort ();
  52   if (ret_foo != -1 || (*p) () != ret_foo)
  53     abort ();
  54
  55   p = get_foo_hidden_p ();
  56   if (ret_foo_hidden != 1 || (*p) () != ret_foo_hidden)
  57     abort ();
  58
  59   p = get_foo_protected_p ();
  60   if (p != foo_protected)
  61     abort ();
  62   if (ret_foo_protected != 0 || (*p) () != ret_foo_protected)
  63     abort ();
  64
  65   return 0;
  66 }