1#include <dlfcn.h>
2#include <error.h>
3#include <mcheck.h>
4#include <stdio.h>
5#include <stdlib.h>
6
7int
8main (void)
9{
10 void *h1;
11 int (*fp1) (int);
12 void *h2;
13 int (*fp2) (int);
14 int res1;
15 int res2;
16
17 mtrace ();
18
19 h1 = dlopen (file: "testobj1.so", RTLD_LAZY);
20 if (h1 == NULL)
21 error (EXIT_FAILURE, errnum: 0, format: "while loading `%s': %s", "testobj1.so",
22 dlerror ());
23
24 h2 = dlopen (file: "testobj1_1.so", RTLD_LAZY);
25 if (h1 == NULL)
26 error (EXIT_FAILURE, errnum: 0, format: "while loading `%s': %s", "testobj1_1.so",
27 dlerror ());
28
29 fp1 = dlsym (handle: h1, name: "obj1func1");
30 if (fp1 == NULL)
31 error (EXIT_FAILURE, errnum: 0, format: "getting `obj1func1' in `%s': %s",
32 "testobj1.so", dlerror ());
33
34 fp2 = dlsym (handle: h2, name: "obj1func1");
35 if (fp2 == NULL)
36 error (EXIT_FAILURE, errnum: 0, format: "getting `obj1func1' in `%s': %s",
37 "testobj1_1.so", dlerror ());
38
39 res1 = fp1 (10);
40 res2 = fp2 (10);
41 printf (format: "fp1(10) = %d\nfp2(10) = %d\n", res1, res2);
42
43 if (dlclose (handle: h1) != 0)
44 error (EXIT_FAILURE, errnum: 0, format: "cannot close testobj1.so: %s\n", dlerror ());
45 if (dlclose (handle: h2) != 0)
46 error (EXIT_FAILURE, errnum: 0, format: "cannot close testobj1_1.so: %s\n", dlerror ());
47
48 return res1 != 42 || res2 != 72;
49}
50
51
52extern int foo (int a);
53int
54foo (int a)
55{
56 return a + 10;
57}
58

source code of glibc/elf/restest1.c