elf/tst-dlopen-nodelete-reloc-mod2.c

   1 /* Test propagation of NODELETE to an already-loaded object via relocation.
   2    NODELETE helper module.
   3    Copyright (C) 2019-2023 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <stdbool.h>
  21 #include <stdio.h>
  22 #include <unistd.h>
  23
  24 /* Defined in tst-dlopen-nodelete-reloc-mod1.so.  This dependency is
  25    not expressed via DT_NEEDED, so this reference marks the other
  26    object as NODELETE dynamically, during initially relocation.  */
  27 extern bool may_finalize_mod1;
  28
  29 static void __attribute__ ((destructor))
  30 fini (void)
  31 {
  32   if (!may_finalize_mod1)
  33     {
  34       puts ("error: tst-dlopen-nodelete-reloc-mod2.so destructor"
  35             " called too early");
  36       _exit (1);
  37     }
  38 }