PROLOG

       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
       Linux behavior), or the interface may not be implemented on Linux.

NAME

       setjmp.h — stack environment declarations

SYNOPSIS

       #include <setjmp.h>

DESCRIPTION

       Some  of  the  functionality  described on this reference page extends the ISO C standard.
       Applications shall define the appropriate feature test macro (see  the  System  Interfaces
       volume of POSIX.1‐2017, Section 2.2, The Compilation Environment) to enable the visibility
       of these symbols in this header.

       The <setjmp.h> header shall define the array types jmp_buf and sigjmp_buf.

       The following shall be declared as functions and may also be defined as  macros.  Function
       prototypes shall be provided.

           void   _longjmp(jmp_buf, int);
           void   longjmp(jmp_buf, int);
           void   siglongjmp(sigjmp_buf, int);

       The  following  may  be declared as functions, or defined as macros, or both. If functions
       are declared, function prototypes shall be provided.

           int    _setjmp(jmp_buf);
           int    setjmp(jmp_buf);
           int    sigsetjmp(sigjmp_buf, int);

       The following sections are informative.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       The System Interfaces volume of POSIX.1‐2017, Section 2.2,  The  Compilation  Environment,
       _longjmp(), longjmp(), setjmp(), siglongjmp(), sigsetjmp()

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1-2017, Standard for Information Technology -- Portable  Operating  System  Interface
       (POSIX),  The  Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by
       the Institute of Electrical and Electronics Engineers, Inc and The  Open  Group.   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 http://www.opengroup.org/unix/online.html .

       Any  typographical  or  formatting errors that appear in this page are most likely to have
       been introduced during the conversion of the source files to man page  format.  To  report
       such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .