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 (at) 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 } 46
