1 /* Copyright (C) 2014-2022 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 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 49