1 // undef_symbol.cc -- a test case for undefined references 2 3 // Copyright (C) 2007-2016 Free Software Foundation, Inc. 4 // Written by Ian Lance Taylor <iant (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 // This file is constructed to have an undefined reference to the 24 // global variable a. We should get an error when we link. 25 26 extern int a; 27 28 class Foo 29 { 30 public: 31 Foo() 32 : a_(a) 33 { } 34 int get_a() 35 { return a_; } 36 private: 37 int a_; 38 }; 39 40 static Foo foo; 41
