sysdeps/unix/sysv/linux/s390/longjmp_chk.c

   1 /* Copyright (C) 2014-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.
  17
  18    Versioned copy of debug/longjmp_chk.c modified for versioning
  19    the reverted jmpbuf extension.  */
  20
  21 #include <shlib-compat.h>
  22
  23 #if IS_IN (libc) && defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
  24 /* this is a copy from debug/longjmp_chk.c because we need an unique name
  25    for __longjmp_chk, but it is already named via a define
  26    for __libc_siglongjmp in debug/longjmp_chk.c.  */
  27 # include <setjmp.h>
  28
  29 // XXX Should move to include/setjmp.h
  30 extern void ____longjmp_chk (__jmp_buf __env, int __val)
  31      __attribute__ ((__noreturn__));
  32
  33 # define __longjmp ____longjmp_chk
  34 # define __libc_siglongjmp __v1__longjmp_chk
  35
  36 # include <setjmp/longjmp.c>
  37
  38 /* In glibc release 2.19 a new versions of __longjmp_chk was introduced,
  39    but was reverted before 2.20. Thus both versions are the same function.  */
  40 strong_alias (__v1__longjmp_chk, __v2__longjmp_chk);
  41 versioned_symbol (libc, __v1__longjmp_chk, __longjmp_chk, GLIBC_2_11);
  42 compat_symbol (libc, __v2__longjmp_chk, __longjmp_chk, GLIBC_2_19);
  43
  44 #else
  45
  46 # include <debug/longjmp_chk.c>
  47
  48 #endif