1 // weak_unresolved_symbols_test.cc -- a test case for gold
2
3 // Copyright (C) 2015 Free Software Foundation, Inc.
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
bar()31 int bar() {
32 return 0;
33 }
34
35 int (*p)() = &bar;
36
main()37 int main() {
38 if (p == &foo)
39 {
40 foo();
41 }
42 else
43 (*p)();
44 return 0;
45 }
46