1 // icf_safe_so_test.cc -- a test case for gold
2
3 // Copyright (C) 2010-2016 Free Software Foundation, Inc.
4 // Written by Sriraman Tallam <tmsriram@google.com>.
5
6 // This file is part of gold.
7
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 3 of the License, or
11 // (at your option) any later version.
12
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
17
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 // MA 02110-1301, USA.
22
23 // The goal of this program is to verify if identical code folding
24 // in safe mode correctly folds functions in a shared object. The
25 // foo_* functions below should not be folded on X86_64.
26 // For 32-bit X86, the hidden protected and internal symbols can be folded.
27 // foo_glob and bar_glob should not be folded, because function pointer
28 // of foo_glob is taken.
29
30 int __attribute__ ((visibility ("protected")))
foo_prot()31 foo_prot()
32 {
33 return 1;
34 }
35
36 int __attribute__ ((visibility ("hidden")))
foo_hidden()37 foo_hidden()
38 {
39 return 1;
40 }
41
42 int __attribute__ ((visibility ("internal")))
foo_internal()43 foo_internal()
44 {
45 return 1;
46 }
47
48 static int
foo_static()49 foo_static()
50 {
51 return 1;
52 }
53
foo_glob()54 int foo_glob()
55 {
56 return 2;
57 }
58
bar_glob()59 int bar_glob()
60 {
61 return 2;
62 }
63
main()64 int main()
65 {
66 int (*p)() = foo_glob;
67 (void)p;
68 foo_static();
69 foo_prot();
70 foo_hidden();
71 foo_internal();
72 return 0;
73 }
74
75