1  /* Copyright (C) 2014-2023 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     <https://www.gnu.org/licenses/>.
      17  
      18     Versioned copy of setjmp/longjmp.c modified for versioning
      19     the reverted jmpbuf extension.  */
      20  
      21  #include <shlib-compat.h>
      22  
      23  #if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
      24  /* We don't want the weak alias to longjmp, _longjmp, siglongjmp here,
      25     because we create the default/versioned symbols later.  */
      26  # define __libc_siglongjmp __libc_siglongjmp
      27  #endif /* SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)  */
      28  
      29  #include <setjmp/longjmp.c>
      30  
      31  #if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)
      32  /* In glibc release 2.19 new versions of longjmp-functions were introduced,
      33     but were reverted before 2.20. Thus both versions are the same function.  */
      34  
      35  strong_alias (__libc_siglongjmp, __libc_longjmp)
      36  
      37  weak_alias (__libc_siglongjmp, __v1_longjmp)
      38  weak_alias (__libc_siglongjmp, __v2_longjmp)
      39  versioned_symbol (libc, __v1_longjmp, _longjmp, GLIBC_2_0);
      40  compat_symbol (libc, __v2_longjmp, _longjmp, GLIBC_2_19);
      41  
      42  weak_alias (__libc_siglongjmp, __v1longjmp)
      43  weak_alias (__libc_siglongjmp, __v2longjmp)
      44  versioned_symbol (libc, __v1longjmp, longjmp, GLIBC_2_0);
      45  compat_symbol (libc, __v2longjmp, longjmp, GLIBC_2_19);
      46  
      47  weak_alias (__libc_siglongjmp, __v1siglongjmp)
      48  weak_alias (__libc_siglongjmp, __v2siglongjmp)
      49  versioned_symbol (libc, __v1siglongjmp, siglongjmp, GLIBC_2_0);
      50  compat_symbol (libc, __v2siglongjmp, siglongjmp, GLIBC_2_19);
      51  #endif /* SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20)  */