File: ifuncmain5.c

package info (click to toggle)
glibc 2.41-12
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid, trixie
  • size: 300,384 kB
  • sloc: ansic: 1,050,583; asm: 238,243; makefile: 20,379; python: 13,537; sh: 11,827; cpp: 5,197; awk: 1,795; perl: 317; yacc: 292; pascal: 182; sed: 19
file content (47 lines) | stat: -rw-r--r-- 765 bytes parent folder | download | duplicates (10)
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
/* Test STT_GNU_IFUNC symbols with dynamic function pointer only.  */

#include <stdlib.h>

extern int foo (void);
extern int foo_protected (void);

typedef int (*foo_p) (void);

foo_p
__attribute__ ((noinline))
get_foo (void)
{
  return 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
__attribute__ ((noinline))
get_foo_protected (void)
{
  return foo_protected;
}
#endif

int
main (void)
{
  foo_p p;

  p = get_foo ();
  if ((*p) () != -1)
    abort ();

#ifdef __PIE__
  p = get_foo_protected ();
  if ((*p) () != 0)
    abort ();
#endif

  return 0;
}