1  /* Lazy binding during dlclose.  Indirectly loaded module.
       2     Copyright (C) 2023 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 <stdio.h>
      20  #include <stdlib.h>
      21  
      22  void
      23  exported_function (int ignored)
      24  {
      25    /* This function is interposed from tst-dlclose-lazy-mod1.so and
      26       thus never called.  */
      27    abort ();
      28  }
      29  
      30  static void __attribute__ ((constructor))
      31  init (void)
      32  {
      33    puts ("info: tst-dlclose-lazy-mod2.so constructor called");
      34  
      35    /* Trigger lazy binding to the definition in
      36       tst-dlclose-lazy-mod1.so, but not for
      37       lazily_bound_exported_function in that module.  */
      38    exported_function (0);
      39  }
      40  
      41  static void __attribute__ ((destructor))
      42  fini (void)
      43  {
      44    puts ("info: tst-dlclose-lazy-mod2.so destructor called");
      45  
      46    /* Trigger the lazily_bound_exported_function call in
      47       exported_function in tst-dlclose-lazy-mod1.so.  */
      48    exported_function (1);
      49  }