gold/testsuite/weak_undef_lib_4.c

   1 /* weak_undef_lib_4.c -- test non-default weak undefined symbol in DSO.
   2
   3    Copyright (C) 2024 Free Software Foundation, Inc.
   4
   5    This file is part of gold.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 /* Non-default weak undefined symbol in DSO should be resolved to 0 at
  23    runtime.  */
  24
  25 #include <stdlib.h>
  26
  27 extern void undefined (void) __attribute__((visibility("hidden"))) __attribute__((weak));
  28 extern void protected (void) __attribute__((visibility("protected")))  __attribute__((weak));
  29
  30 extern void foo (void);
  31
  32 void
  33 foo (void)
  34 {
  35   if (&undefined != NULL)
  36     abort ();
  37
  38   if (&protected != NULL)
  39     abort ();
  40 }