gold/testsuite/weak_alias_test_5.cc

   1 // weak_alias_test_5.cc -- test versioned weak aliases for gold
   2
   3 // Copyright (C) 2011-2021 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 // Define a versioned symbol.
  24 int versioned_symbol = 1;
  25 __asm__(".symver versioned_symbol,versioned_symbol@@VER1");
  26
  27 // Define a weak alias for the versioned symbol, with a different version.
  28 extern int versioned_alias __attribute__ ((weak, alias("versioned_symbol")));
  29 __asm__(".symver versioned_alias,versioned_alias@@VER2");
  30
  31 bool
  32 t2()
  33 {
  34   if (versioned_symbol != 1)
  35     return false;
  36   if (versioned_alias != 1)
  37     return false;
  38   return true;
  39 }