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25 lines
755 B
Plaintext
25 lines
755 B
Plaintext
@node longjmp
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@section @code{longjmp}
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@findex longjmp
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POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/longjmp.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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The effects of this call are system and compiler optimization dependent,
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since it restores the contents of register-allocated variables but not
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the contents of stack-allocated variables.
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@item
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When longjumping out of a signal handler that was being executed on an
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alternate stack (installed through @code{sigaltstack}), on FreeBSD, NetBSD,
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OpenBSD, you need to clear the @code{SS_ONSTACK} flag in the @code{stack_t}
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structure managed by the kernel.
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@end itemize
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