1 /* Thread-local variable holding the dlerror result.
2    Copyright (C) 2021-2022 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
__libc_dlerror_result_free(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 }
40