1 // weak_undef_test.cc -- test handling of weak undefined symbols for gold
3 // Copyright 2008 Free Software Foundation, Inc.
4 // Written by Cary Coutant <ccoutant@google.com>.
6 // This file is part of gold.
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.
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.
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.
23 // We test that we correctly deal with weak undefined symbols.
24 // We need to make sure that the symbol is resolved to zero
25 // by the linker and that no dynamic relocation is generated.
27 // This file will be linked with a shared library that does not
28 // define the symbol, so that the symbol remains undefined.
29 // Through the use of LD_LIBRARY_PATH, the program will load
30 // an alternate shared library that does define the symbol,
31 // so that we can detect whether the symbol was left for runtime
37 extern int no_such_symbol_
__attribute__ ((weak
));
42 if (&no_such_symbol_
!= NULL
)
44 fprintf(stderr
, "FAILED the weak undef test: &no_such_symbol_ is not NULL\n");
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