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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
/* This testcase is part of GDB, the GNU debugger.
Copyright 2004-2019 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stdlib.h>
#ifdef __WIN32__
#include <windows.h>
#define dlopen(name, mode) LoadLibrary (TEXT (name))
#ifdef _WIN32_WCE
# define dlsym(handle, func) GetProcAddress (handle, TEXT (func))
#else
# define dlsym(handle, func) GetProcAddress (handle, func)
#endif
#define dlclose(handle) FreeLibrary (handle)
#else
#include <dlfcn.h>
#endif
int k = 0;
int main()
{
void *handle;
int (*unloadshr) (int);
int y;
const char *msg;
handle = dlopen (SHLIB_NAME, RTLD_LAZY);
if (!handle)
{
fprintf (stderr, "%s\n", dlerror ());
exit (1);
}
unloadshr = (int (*) (int)) dlsym (handle, "shrfunc1");
if (!unloadshr)
{
#ifdef __WIN32__
fprintf (stderr, "error %d occurred\n", GetLastError ());
#else
fprintf (stderr, "%s\n", dlerror ());
#endif
exit (1);
}
y = (*unloadshr) (1);
dlclose (handle);
handle = NULL; /* y-set-1 */
/* The second library should share the same memory address. */
handle = dlopen (SHLIB_NAME2, RTLD_LAZY);
if (!handle)
{
fprintf (stderr, "%s\n", dlerror ());
exit (1);
}
unloadshr = (int (*)(int)) dlsym (handle, "shrfunc2");
if (!unloadshr)
{
#ifdef __WIN32__
fprintf (stderr, "error %d occurred\n", GetLastError ());
#else
fprintf (stderr, "%s\n", dlerror ());
#endif
exit (1);
}
y = (*unloadshr) (2);
dlclose (handle);
handle = NULL; /* y-set-2 */
return 0;
}
|
