setjmp/bsd-_setjmp.c

   1 /* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'.  Stub version.
   2    Copyright (C) 1994-2023 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 <sysdep.h>
  20 #include <setjmp.h>
  21
  22 #undef _setjmp
  23
  24 /* This implementation in C will not usually work, because the call
  25    really needs to be a tail-call so __sigsetjmp saves the state of
  26    the caller, not the state of this `setjmp' frame which then
  27    immediate unwinds.  */
  28
  29 int
  30 _setjmp (jmp_buf env)
  31 {
  32   return __sigsetjmp (env, 0);
  33 }
  34 libc_hidden_def (_setjmp)