gold/testsuite/weak_test.cc

   1 // weak_test.cc -- test handling of weak symbols for gold
   2
   3 // Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
   4 // Written by Ian Lance Taylor <iant@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 }