| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 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)) |
| 30 | foo (void) |
| 31 | { |
| 32 | return -30; |
| 33 | } |
| 34 | |
| 35 | int |
| 36 | __attribute__ ((noinline)) |
| 37 | foo_hidden (void) |
| 38 | { |
| 39 | return -20; |
| 40 | } |
| 41 | |
| 42 | int |
| 43 | __attribute__ ((noinline)) |
| 44 | foo_protected (void) |
| 45 | { |
| 46 | return -40; |
| 47 | } |
| 48 | |
| 49 | int |
| 50 | main (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 | } |