1  /* Thread-local variable holding the dlerror result.
       2     Copyright (C) 2021-2023 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     <http://www.gnu.org/licenses/>.  */
      18  
      19  #include <dlerror.h>
      20  
      21  /* This pointer is either NULL, dl_action_result_malloc_failed (), or
      22     has been allocated using malloc by the namespace that also contains
      23     this instance of the thread-local variable.  */
      24  __thread struct dl_action_result *__libc_dlerror_result attribute_tls_model_ie;
      25  
      26  /* Called during thread shutdown to free resources.  */
      27  void
      28  __libc_dlerror_result_free (void)
      29  {
      30    if (__libc_dlerror_result != NULL)
      31      {
      32        if (__libc_dlerror_result != dl_action_result_malloc_failed)
      33          {
      34            dl_action_result_errstring_free (__libc_dlerror_result);
      35            free (__libc_dlerror_result);
      36          }
      37        __libc_dlerror_result = NULL;
      38      }
      39  }