1/* Initialization of libc after dlmopen/dlclose/dlmopen (bug 29528). Module 2.
2 Copyright (C) 2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <ctype.h>
20#include <stdio.h>
21
22static void __attribute__ ((constructor))
23init (void)
24{
25 puts (s: "info: tst-dlmopen-twice-mod2.so loaded");
26 fflush (stdout);
27}
28
29static void __attribute__ ((destructor))
30fini (void)
31{
32 puts (s: "info: tst-dlmopen-twice-mod2.so about to be unloaded");
33 fflush (stdout);
34}
35
36int
37run_check (void)
38{
39 puts (s: "info: about to call isalpha");
40 fflush (stdout);
41
42 volatile char ch = 'a';
43 if (!isalpha (ch))
44 {
45 puts (s: "error: isalpha ('a') is not true");
46 fflush (stdout);
47 return 1;
48 }
49 return 0;
50}
51

source code of glibc/elf/tst-dlmopen-twice-mod2.c