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diff --git a/REORG.TODO/setjmp/setjmp.h b/REORG.TODO/setjmp/setjmp.h
new file mode 100644
index 0000000000..86fb2edf6c
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+++ b/REORG.TODO/setjmp/setjmp.h
@@ -0,0 +1,105 @@
+/* Copyright (C) 1991-2017 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/>.  */
+
+/*
+ *	ISO C99 Standard: 7.13 Nonlocal jumps	<setjmp.h>
+ */
+
+#ifndef	_SETJMP_H
+#define	_SETJMP_H	1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+#include <bits/setjmp.h>		/* Get `__jmp_buf'.  */
+#include <bits/types/__sigset_t.h>
+
+/* Calling environment, plus possibly a saved signal mask.  */
+struct __jmp_buf_tag
+  {
+    /* NOTE: The machine-dependent definitions of `__sigsetjmp'
+       assume that a `jmp_buf' begins with a `__jmp_buf' and that
+       `__mask_was_saved' follows it.  Do not move these members
+       or add others before it.  */
+    __jmp_buf __jmpbuf;		/* Calling environment.  */
+    int __mask_was_saved;	/* Saved the signal mask?  */
+    __sigset_t __saved_mask;	/* Saved signal mask.  */
+  };
+
+
+typedef struct __jmp_buf_tag jmp_buf[1];
+
+/* Store the calling environment in ENV, also saving the signal mask.
+   Return 0.  */
+extern int setjmp (jmp_buf __env) __THROWNL;
+
+/* Store the calling environment in ENV, also saving the
+   signal mask if SAVEMASK is nonzero.  Return 0.
+   This is the internal name for `sigsetjmp'.  */
+extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask) __THROWNL;
+
+/* Store the calling environment in ENV, not saving the signal mask.
+   Return 0.  */
+extern int _setjmp (struct __jmp_buf_tag __env[1]) __THROWNL;
+
+/* Do not save the signal mask.  This is equivalent to the `_setjmp'
+   BSD function.  */
+#define setjmp(env)	_setjmp (env)
+
+
+/* Jump to the environment saved in ENV, making the
+   `setjmp' call there return VAL, or 1 if VAL is 0.  */
+extern void longjmp (struct __jmp_buf_tag __env[1], int __val)
+     __THROWNL __attribute__ ((__noreturn__));
+
+#if defined __USE_MISC || defined __USE_XOPEN
+/* Same.  Usually `_longjmp' is used with `_setjmp', which does not save
+   the signal mask.  But it is how ENV was saved that determines whether
+   `longjmp' restores the mask; `_longjmp' is just an alias.  */
+extern void _longjmp (struct __jmp_buf_tag __env[1], int __val)
+     __THROWNL __attribute__ ((__noreturn__));
+#endif
+
+
+#ifdef	__USE_POSIX
+/* Use the same type for `jmp_buf' and `sigjmp_buf'.
+   The `__mask_was_saved' flag determines whether
+   or not `longjmp' will restore the signal mask.  */
+typedef struct __jmp_buf_tag sigjmp_buf[1];
+
+/* Store the calling environment in ENV, also saving the
+   signal mask if SAVEMASK is nonzero.  Return 0.  */
+# define sigsetjmp(env, savemask)	__sigsetjmp (env, savemask)
+
+/* Jump to the environment saved in ENV, making the
+   sigsetjmp call there return VAL, or 1 if VAL is 0.
+   Restore the signal mask if that sigsetjmp call saved it.
+   This is just an alias `longjmp'.  */
+extern void siglongjmp (sigjmp_buf __env, int __val)
+     __THROWNL __attribute__ ((__noreturn__));
+#endif /* Use POSIX.  */
+
+
+/* Define helper functions to catch unsafe code.  */
+#if __USE_FORTIFY_LEVEL > 0
+# include <bits/setjmp2.h>
+#endif
+
+__END_DECLS
+
+#endif /* setjmp.h  */