| 1 | /* Copyright (C) 2014-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. |
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| 17 | |
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| 18 | Versioned copy of debug/longjmp_chk.c modified for versioning |
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| 19 | the reverted jmpbuf extension. */ |
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| 20 | |
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| 21 | #include <shlib-compat.h> |
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| 22 | |
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| 23 | #if IS_IN (libc) && defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_19, GLIBC_2_20) |
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| 24 | /* this is a copy from debug/longjmp_chk.c because we need an unique name |
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| 25 | for __longjmp_chk, but it is already named via a define |
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| 26 | for __libc_siglongjmp in debug/longjmp_chk.c. */ |
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| 27 | # include <setjmp.h> |
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| 28 | |
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| 29 | // XXX Should move to include/setjmp.h |
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| 30 | extern void ____longjmp_chk (__jmp_buf __env, int __val) |
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| 31 | __attribute__ ((__noreturn__)); |
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| 32 | |
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| 33 | # define __longjmp ____longjmp_chk |
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| 34 | # define __libc_siglongjmp __v1__longjmp_chk |
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| 35 | |
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| 36 | # include <setjmp/longjmp.c> |
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| 37 | |
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| 38 | /* In glibc release 2.19 a new versions of __longjmp_chk was introduced, |
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| 39 | but was reverted before 2.20. Thus both versions are the same function. */ |
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| 40 | strong_alias (__v1__longjmp_chk, __v2__longjmp_chk); |
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| 41 | versioned_symbol (libc, __v1__longjmp_chk, __longjmp_chk, GLIBC_2_11); |
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| 42 | compat_symbol (libc, __v2__longjmp_chk, __longjmp_chk, GLIBC_2_19); |
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| 43 | |
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| 44 | #else |
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| 45 | |
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| 46 | # include <debug/longjmp_chk.c> |
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| 47 | |
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| 48 | #endif |
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| 49 | |
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