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24 lines
769 B
Plaintext
24 lines
769 B
Plaintext
@node setjmp
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@section @code{setjmp}
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@findex setjmp
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/setjmp.html}
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Gnulib module: ---
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Portability problems fixed by Gnulib:
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@itemize
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@item
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POSIX does not specify whether @code{setjmp} saves the signal mask in the
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@code{jmp_buf}. It does on BSD platforms, and on glibc platforms when
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@code{_BSD_SOURCE} is defined; in this case @code{setjmp} behaves like
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@code{sigsetjmp(.,1)}, and functions @code{_setjmp} and @code{_longjmp} are
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available that don't save or restore the signal mask. On System V platforms
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(excluding HP-UX), and on glibc platforms by default, @code{setjmp} doesn't
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save the signal mask.
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@end itemize
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