5 POSIX specification: @url{http://www.opengroup.org/susv3xsh/setjmp.html}
9 Portability problems fixed by Gnulib:
13 Portability problems not fixed by Gnulib:
16 This function is missing on some platforms:
19 POSIX does not specify whether @code{setjmp} saves the signal mask in the
20 @code{jmp_buf}. It does on BSD platforms, and on glibc platforms when
21 @code{_BSD_SOURCE} is defined; in this case @code{setjmp} behaves like
22 @code{sigsetjmp}, and functions @code{_setjmp} and @code{_longjmp} are
23 available that don't save or restore the signal mask. On System V platforms,
24 and on glibc platforms by default, @code{setjmp} doesn't save the signal mask.