1/* Copyright (C) 2003-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <stdio.h>
19#include <tst-stack-align.h>
20
21static int res, *resp;
22
23static void __attribute__((constructor))
24con (void)
25{
26 res = TEST_STACK_ALIGN () ? -1 : 1;
27}
28
29void
30in_dso (int *result)
31{
32 if (!res)
33 {
34 puts (s: "constructor has not been run");
35 *result = 1;
36 }
37 else if (res != 1)
38 {
39 puts (s: "constructor has been run without sufficient alignment");
40 *result = 1;
41 }
42
43 resp = result;
44}
45
46static void __attribute__((destructor))
47des (void)
48{
49 if (TEST_STACK_ALIGN ())
50 *resp = 1;
51}
52

source code of glibc/elf/tst-alignmod.c