1/* initpri3.c -- test ctor odering when using init_array.
2
3   Copyright (C) 2011-2020 Free Software Foundation, Inc.
4   Written by Ian Lance Taylor <iant@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/* This tests that the linker correctly orders .ctor entries when
24   putting them into .init_array, as is the default.  */
25
26#include <assert.h>
27
28int i = 1;
29
30static void
31ctor1 (void)
32{
33  assert (i == 1);
34  i = 2;
35}
36
37static void
38ctor2 (void)
39{
40  assert (i == 2);
41  i = 3;
42}
43
44static void
45dtor1 (void)
46{
47  assert (i == 3);
48  i = 2;
49}
50
51static void
52dtor2 (void)
53{
54  assert (i == 2);
55  i = 1;
56}
57
58/* The .ctors section is run in reverse order, the .dtors section in
59   run in forward order.  We give these arrays the "aligned" attribute
60   because the x86_64 ABI would otherwise give them a 16-byte
61   alignment, which may leave a hole in the section.  */
62
63void (*ctors[]) (void)
64  __attribute__ ((aligned (4), section (".ctors"))) = {
65  ctor2,
66  ctor1
67};
68
69void (*dtors[]) (void)
70  __attribute__ ((aligned (4), section (".dtors"))) = {
71  dtor1,
72  dtor2
73};
74
75int
76main (void)
77{
78  assert (i == 3);
79  return 0;
80}
81