1  /* Verify that DSO is unloaded only if its TLS objects are destroyed - the DSO.
       2     Copyright (C) 2013-2023 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 <stdlib.h>
      20  #include <dso_handle.h>
      21  
      22  typedef struct
      23  {
      24    void *val;
      25  } A;
      26  
      27  /* We only care about the destructor.  */
      28  void A_dtor (void *obj)
      29  {
      30    ((A *)obj)->val = obj;
      31  }
      32  
      33  void reg_dtor (void)
      34  {
      35    static __thread A b;
      36    __cxa_thread_atexit_impl (A_dtor, &b, __dso_handle);
      37  }