1#!/bin/sh
2
3# program
4#
5# dlopen():
6# libb.so
7# <- libb_dependency.so
8# liba.so
9#
10# Expected: Global lookup: Symbol in libb_dependency.so supersedes symbol in
11# liba.so.
12
13
14. ./test_setup
15
16
17# create liba.so
18cat > liba.c << EOI
19int a() { return 1; }
20EOI
21
22# build
23compile_lib -o liba.so liba.c
24
25
26# create libb_dependency.so
27cat > libb_dependency.c << EOI
28int a() { return 2; }
29EOI
30
31# build
32compile_lib -o libb_dependency.so libb_dependency.c
33
34
35# create libb.so
36cat > libb.c << EOI
37int b() { return 1; }
38EOI
39
40# build
41compile_lib -o libb.so libb.c ./libb_dependency.so
42
43
44# create program
45cat > program.c << EOI
46#include <dlfcn.h>
47#include <stdio.h>
48#include <stdlib.h>
49int
50main()
51{
52	void* liba;
53	void* libb;
54	void* self;
55	int (*a)();
56
57	libb = dlopen("./libb.so", RTLD_NOW | RTLD_GLOBAL);
58	if (libb == NULL) {
59		fprintf(stderr, "Error opening libb.so: %s\n", dlerror());
60		exit(117);
61	}
62
63	liba = dlopen("./liba.so", RTLD_NOW | RTLD_GLOBAL);
64	if (liba == NULL) {
65		fprintf(stderr, "Error opening liba.so: %s\n", dlerror());
66		exit(117);
67	}
68
69	self = dlopen(NULL, RTLD_NOW | RTLD_GLOBAL);
70	if (self == NULL) {
71		fprintf(stderr, "Error opening self: %s\n", dlerror());
72		exit(117);
73	}
74
75	a = (int (*)())dlsym(self, "a");
76	if (a == NULL) {
77		fprintf(stderr, "Error getting symbol a: %s\n", dlerror());
78		exit(116);
79	}
80
81	return a();
82}
83EOI
84
85# build
86compile_program_dl -o program program.c
87
88# run
89test_run_ok ./program 2
90
91