elf/tst-dlopen-nodelete-reloc-mod13.cc

   1 /* Second module for NODELETE test defining a unique symbol (with DT_NEEDED).
   2    Copyright (C) 2019-2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include "tst-dlopen-nodelete-reloc.h"
  20
  21 #include <stdbool.h>
  22 #include <stdio.h>
  23 #include <unistd.h>
  24
  25 /* Just a flag here, not used for NODELETE processing.  */
  26 bool may_finalize_mod13 = false;
  27
  28 extern template struct unique_symbol<12>;
  29
  30 /* Trigger the creation of a unique symbol reference.  This should
  31    cause tst-dlopen-nodelete-reloc-mod12.so to be marked as
  32    NODELETE.  */
  33 int
  34 global_function_mod13 (void)
  35 {
  36   return unique_symbol<12>::value;
  37 }
  38
  39 static void __attribute__ ((destructor))
  40 fini (void)
  41 {
  42   if (!may_finalize_mod13)
  43     {
  44       puts ("error: tst-dlopen-nodelete-reloc-mod13.so destructor"
  45             " called too early");
  46       _exit (1);
  47     }
  48 }