1#include <dlfcn.h>
2#include <error.h>
3#include <stdio.h>
4#include <stdlib.h>
5
6int
7main (void)
8{
9 void *h;
10 int (*fp) (int);
11 int res;
12
13 h = dlopen (file: "${ORIGIN}/testobj1.so", RTLD_LAZY);
14 if (h == NULL)
15 error (EXIT_FAILURE, errnum: 0, format: "while loading `%s': %s", "testobj1.so",
16 dlerror ());
17
18 fp = dlsym (handle: h, name: "obj1func1");
19 if (fp == NULL)
20 error (EXIT_FAILURE, errnum: 0, format: "getting `obj1func1' in `%s': %s",
21 "testobj1.so", dlerror ());
22
23 res = fp (10);
24 printf (format: "fp(10) = %d\n", res);
25
26 if (dlclose (handle: h) != 0)
27 error (EXIT_FAILURE, errnum: 0, format: "while close `%s': %s",
28 "testobj1.so", dlerror ());
29
30 return res != 42;
31}
32
33
34extern int foo (int a);
35int
36foo (int a)
37{
38 return a + 10;
39}
40

source code of glibc/elf/origtest.c