1  /* Copyright (C) 1999-2023 Free Software Foundation, Inc.
       2  
       3     NOTE: This source is derived from an old version taken from the GNU C
       4     Library (glibc).
       5  
       6  This file is part of GCC.
       7  
       8  GCC is free software; you can redistribute it and/or modify it under
       9  the terms of the GNU General Public License as published by the Free
      10  Software Foundation; either version 3, or (at your option) any later
      11  version.
      12  
      13  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      14  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      15  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      16  for more details.
      17  
      18  Under Section 7 of GPL version 3, you are granted additional
      19  permissions described in the GCC Runtime Library Exception, version
      20  3.1, as published by the Free Software Foundation.
      21  
      22  You should have received a copy of the GNU General Public License and
      23  a copy of the GCC Runtime Library Exception along with this program;
      24  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
      25  <http://www.gnu.org/licenses/>.  */
      26  
      27  #include <stdlib.h>
      28  #include "exit.h"
      29  
      30  
      31  /* This is defined by newer gcc version unique for each module.  */
      32  extern void *__dso_handle __attribute__ ((__weak__));
      33  
      34  
      35  /* Register FUNC to be executed by `exit'.  */
      36  int
      37  #ifndef atexit
      38  attribute_hidden
      39  #endif
      40  atexit (void (*func) (void))
      41  {
      42    return __cxa_atexit ((void (*) (void *)) func, NULL,
      43  		       &__dso_handle == NULL ? NULL : __dso_handle);
      44  }