blob: 6effce3d77b1f7067f07045bf0af898dcdcce508 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/* Test STT_GNU_IFUNC symbols:
1. Direct function call.
2. Function pointer.
3. Visibility without override.
*/
#include <stdlib.h>
int ret_foo;
int ret_foo_hidden;
int ret_foo_protected;
extern int foo (void);
extern int foo_protected (void);
#ifndef FOO_P
typedef int (*foo_p) (void);
#endif
foo_p foo_ptr = foo;
/* Address-significant access to protected symbols is not supported in
position-dependent mode on several architectures because GCC
generates relocations that assume that the address is local to the
main program. */
#ifdef __PIE__
foo_p foo_procted_ptr = foo_protected;
#endif
extern foo_p get_foo_p (void);
extern foo_p get_foo_hidden_p (void);
extern foo_p get_foo_protected_p (void);
int
main (void)
{
foo_p p;
if (foo_ptr != foo)
abort ();
if (foo () != -1)
abort ();
if ((*foo_ptr) () != -1)
abort ();
#ifdef __PIE__
if (foo_procted_ptr != foo_protected)
abort ();
#endif
if (foo_protected () != 0)
abort ();
#ifdef __PIE__
if ((*foo_procted_ptr) () != 0)
abort ();
#endif
p = get_foo_p ();
if (p != foo)
abort ();
if (ret_foo != -1 || (*p) () != ret_foo)
abort ();
p = get_foo_hidden_p ();
if (ret_foo_hidden != 1 || (*p) () != ret_foo_hidden)
abort ();
p = get_foo_protected_p ();
#ifdef __PIE__
if (p != foo_protected)
abort ();
#endif
if (ret_foo_protected != 0 || (*p) () != ret_foo_protected)
abort ();
return 0;
}
|