1 /* Test STT_GNU_IFUNC symbols: 2 3 1. Direct function call. 4 2. Function pointer. 5 3. Visibility with override. 6 */ 7 8 #include <stdlib.h> 9 10 int ret_foo; 11 int ret_foo_hidden; 12 int ret_foo_protected; 13 14 extern int foo (void); 15 extern int foo_protected (void); 16 17 #ifndef FOO_P 18 typedef int (*foo_p) (void); 19 #endif 20 21 foo_p foo_ptr = foo; 22 foo_p foo_procted_ptr = foo_protected; 23 24 extern foo_p get_foo_p (void); 25 extern foo_p get_foo_hidden_p (void); 26 extern foo_p get_foo_protected_p (void); 27 28 int 29 __attribute__ ((noinline)) foo(void)30foo (void) 31 { 32 return -30; 33 } 34 35 int 36 __attribute__ ((noinline)) foo_hidden(void)37foo_hidden (void) 38 { 39 return -20; 40 } 41 42 int 43 __attribute__ ((noinline)) foo_protected(void)44foo_protected (void) 45 { 46 return -40; 47 } 48 49 int main(void)50main (void) 51 { 52 foo_p p; 53 54 if (foo_ptr != foo) 55 abort (); 56 if ((*foo_ptr) () != -30) 57 abort (); 58 59 if (foo_procted_ptr != foo_protected) 60 abort (); 61 if ((*foo_procted_ptr) () != -40) 62 abort (); 63 64 p = get_foo_p (); 65 if (p != foo) 66 abort (); 67 if (foo () != -30) 68 abort (); 69 if (ret_foo != -30 || (*p) () != ret_foo) 70 abort (); 71 72 p = get_foo_hidden_p (); 73 if (foo_hidden () != -20) 74 abort (); 75 if (ret_foo_hidden != 1 || (*p) () != ret_foo_hidden) 76 abort (); 77 78 p = get_foo_protected_p (); 79 if (p == foo_protected) 80 abort (); 81 if (foo_protected () != -40) 82 abort (); 83 if (ret_foo_protected != 0 || (*p) () != ret_foo_protected) 84 abort (); 85 86 return 0; 87 } 88