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@node _setjmp
@section @code{_setjmp}
@findex _setjmp
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/_setjmp.html}
Gnulib module: ---
Portability problems fixed by Gnulib:
@itemize
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@end itemize
Note: A future revision of POSIX later than the 2008/2009 one may drop the
functions @code{_setjmp} and @code{_longjmp}. Still, in 2008, on all
systems which have @code{_setjmp}, it is the fastest way to save the
registers but not the signal mask (up to 30 times faster than @code{setjmp}
on some systems).
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