-/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2019 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 Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ 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>
__BEGIN_DECLS
#include <bits/setjmp.h> /* Get `__jmp_buf'. */
-#include <bits/sigset.h> /* Get `__sigset_t'. */
+#include <bits/types/__sigset_t.h>
/* Calling environment, plus possibly a saved signal mask. */
-typedef struct __jmp_buf_tag /* C++ doesn't like tagless structs. */
+struct __jmp_buf_tag
{
/* NOTE: The machine-dependent definitions of `__sigsetjmp'
- assume that a `jmp_buf' begins with a `__jmp_buf'.
- Do not move this member or add others before it. */
+ 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. */
- } jmp_buf[1];
+ };
+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 (jmp_buf __env, int __savemask) __THROW;
-
-#ifndef __FAVOR_BSD
-/* Set ENV to the current position and return 0, not saving the signal mask.
- This is just like `sigsetjmp (ENV, 0)'.
- The ISO C standard says `setjmp' is a macro. */
-# define setjmp(env) __sigsetjmp ((env), 0)
-#else
-/* We are in 4.3 BSD-compatibility mode in which `setjmp'
- saves the signal mask like `sigsetjmp (ENV, 1)'. */
-# define setjmp(env) __sigsetjmp ((env), 1)
-#endif /* Favor BSD. */
-
-#if defined __USE_BSD || defined __USE_XOPEN
-/* Set ENV to the current position and return 0, not saving the signal mask.
- This is the 4.3 BSD name for ISO `setjmp'. */
-# define _setjmp(env) __sigsetjmp ((env), 0)
-#endif
+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 (jmp_buf __env, int __val)
- __THROW __attribute__ ((__noreturn__));
-#if defined __USE_BSD || defined __USE_XOPEN
+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 (jmp_buf __env, int __val)
- __THROW __attribute__ ((__noreturn__));
+extern void _longjmp (struct __jmp_buf_tag __env[1], int __val)
+ __THROWNL __attribute__ ((__noreturn__));
#endif
/* 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 jmp_buf sigjmp_buf;
+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))
+# 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)
- __THROW __attribute__ ((__noreturn__));
+ __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 */
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