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65eb8c79 ST |
1 | // weak_unresolved_symbols_test.cc -- a test case for gold |
2 | ||
82704155 | 3 | // Copyright (C) 2015-2019 Free Software Foundation, Inc. |
65eb8c79 ST |
4 | // Written by Sriraman Tallam <tmsriram@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
23 | // Test --weak-unresolved-symbols. Symbol foo remains unresolved but | |
24 | // with -fPIE, needs a GOT entry and has a dynsym entry and a dynamic | |
25 | // relocation against it created. This will fail to link and run without | |
26 | // --weak-unresolved-symbols. With --warn-unresolved-symbols, it will link | |
27 | // but the dynamic linker will complain that foo(_Z3foov) is unresolved. | |
28 | ||
29 | extern int foo(); | |
30 | ||
31 | int bar() { | |
32 | return 0; | |
33 | } | |
34 | ||
35 | int (*p)() = &bar; | |
36 | ||
37 | int main() { | |
38 | if (p == &foo) | |
39 | { | |
40 | foo(); | |
41 | } | |
42 | else | |
43 | (*p)(); | |
44 | return 0; | |
45 | } |