Copyright (c) 1994, X/Open Company Limited. All Rights Reserved.
Portions Copyright (c) 2002, Sun Microsystems, Inc. All Rights Reserved
Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
http://www.opengroup.org/bookstore/.
The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
This notice shall appear on any product containing this material.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
#include <setjmp.h> void _longjmp(jmp_buf env, int val);
int _setjmp(jmp_buf env);
The _longjmp() and _setjmp() functions are identical to longjmp(3C) and setjmp(3C), respectively, with the additional restriction that _longjmp() and _setjmp() do not manipulate the signal mask.
If _longjmp() is called even though env was never initialized by a call to _setjmp(), or when the last such call was in a function that has since returned, the results are undefined.
Refer to longjmp(3C) and setjmp(3C).
No errors are defined.
If _longjmp() is executed and the environment in which _setjmp() was executed no longer exists, errors can occur. The conditions under which the environment of the _setjmp() no longer exists include exiting the function that contains the _setjmp() call, and exiting an inner block with temporary storage. This condition might not be detectable, in which case the _longjmp() occurs and, if the environment no longer exists, the contents of the temporary storage of an inner block are unpredictable. This condition might also cause unexpected process termination. If the function has returned, the results are undefined.
Passing longjmp() a pointer to a buffer not created by setjmp(\|), passing _longjmp() a pointer to a buffer not created by _setjmp(), passing siglongjmp(3C) a pointer to a buffer not created by sigsetjmp(3C) or passing any of these three functions a buffer that has been modified by the user can cause all the problems listed above, and more.
The _longjmp() and _setjmp() functions are included to support programs written to historical system interfaces. New applications should use siglongjmp(3C) and sigsetjmp(3C) respectively.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE ATTRIBUTE VALUE |
| Interface Stability Standard |
longjmp(3C), setjmp(3C), siglongjmp(3C), sigsetjmp(3C), attributes(5), standards(5)