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diff --git a/REORG.TODO/setjmp/bits/setjmp2.h b/REORG.TODO/setjmp/bits/setjmp2.h
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+/* Checking macros for setjmp functions.
+ Copyright (C) 2009-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _SETJMP_H
+# error "Never include <bits/setjmp2.h> directly; use <setjmp.h> instead."
+#endif
+
+/* Variant of the longjmp functions which perform some sanity checking. */
+#ifdef __REDIRECT_NTH
+extern void __REDIRECT_NTHNL (longjmp,
+ (struct __jmp_buf_tag __env[1], int __val),
+ __longjmp_chk) __attribute__ ((__noreturn__));
+extern void __REDIRECT_NTHNL (_longjmp,
+ (struct __jmp_buf_tag __env[1], int __val),
+ __longjmp_chk) __attribute__ ((__noreturn__));
+extern void __REDIRECT_NTHNL (siglongjmp,
+ (struct __jmp_buf_tag __env[1], int __val),
+ __longjmp_chk) __attribute__ ((__noreturn__));
+#else
+extern void __longjmp_chk (struct __jmp_buf_tag __env[1], int __val),
+ __THROWNL __attribute__ ((__noreturn__));
+# define longjmp __longjmp_chk
+# define _longjmp __longjmp_chk
+# define siglongjmp __longjmp_chk
+#endif