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 | } |
88 |