This manual page is part of the POSIX Programmer’s Manual.
The Linux implementation of this interface may differ
(consult the corresponding Linux manual page for details of
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siglongjmp — non‐local goto with signal handling

#include <setjmp.h>
void siglongjmp(sigjmp_buf env, int val);

The siglongjmp() function shall be equivalent to the
longjmp() function, except as follows:

 *  References to setjmp() shall be equivalent to

 *  The siglongjmp() function shall restore the saved signal
    mask if and only if the argument was initialized by a
    call to sigsetjmp() with a non‐zero argument.

After siglongjmp() is completed, program execution shall
continue as if the corresponding invocation of sigsetjmp()
had just returned the value specified by The siglongjmp()
function shall not cause sigsetjmp() to return 0; if is 0,
sigsetjmp() shall return the value 1.

No errors are defined.


The distinction between setjmp() or longjmp() and
sigsetjmp() or siglongjmp() is only significant for programs
which use sigaction(), sigprocmask(), or sigsuspend().



The Base Definitions volume of POSIX.1‐2008,

Portions of this text are reprinted and reproduced in
electronic form from IEEE Std 1003.1, 2013 Edition, Standard
for Information Technology ‐‐ Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue
7, Copyright (C) 2013 by the Institute of Electrical and
Electronics Engineers, Inc and The Open Group.  (This is
POSIX.1‐2008 with the 2013 Technical Corrigendum 1 applied.)
In the event of any discrepancy between this version 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 .

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