// weak_test.cc -- test handling of weak symbols for gold // Copyright (C) 2006-2016 Free Software Foundation, Inc. // Written by Ian Lance Taylor . // This file is part of gold. // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, // MA 02110-1301, USA. // This provides a set of test functions for TLS variables. The // functions are called by a main function in tls_test_main.cc. This // lets us test TLS access from a shared library. We currently don't // bother to test TLS access between two different files, on the // theory that that is no more complicated than ordinary variable // access between files. // We test that we correctly deal with weak symbols defined in // other libraries (in this case, libc). We need to make sure we // copy the associated GLOBAL reloc when we copy a WEAK reloc. #include int main() { extern char** environ; // defined in libc if (environ == NULL) { fprintf(stderr, "FAILED the environ test: environ is NULL\n"); return 1; } return 0; }