1 // weak_test.cc -- test handling of weak symbols for gold 2 3 // Copyright (C) 2006-2014 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 provides a set of test functions for TLS variables. The 24 // functions are called by a main function in tls_test_main.cc. This 25 // lets us test TLS access from a shared library. We currently don't 26 // bother to test TLS access between two different files, on the 27 // theory that that is no more complicated than ordinary variable 28 // access between files. 29 30 // We test that we correctly deal with weak symbols defined in 31 // other libraries (in this case, libc). We need to make sure we 32 // copy the associated GLOBAL reloc when we copy a WEAK reloc. 33 34 35 #include <cstdio> 36 37 int 38 main() 39 { 40 extern char** environ; // defined in libc 41 if (environ == NULL) 42 { 43 fprintf(stderr, "FAILED the environ test: environ is NULL\n"); 44 return 1; 45 } 46 return 0; 47 } 48
