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SubjectRe: BUG (non-kernel), can hurt developers.
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In article <Pine.LNX.4.58.0311261021400.1524@home.osdl.org> (at Wed, 26 Nov 2003 10:29:54 -0800 (PST)), Linus Torvalds <torvalds@osdl.org> says:

> You can't just randomly use library functions in signal handlers. You can
> only use a very specific "signal-safe" set.
>
> POSIX lists that set in 3.3.1.3 (3f), and says
>
> "All POSIX.1 functions not in the preceding table and all
> functions defined in the C standard {2} not stated to be callable
> from a signal-catching function are considered to be /unsafe/
> with respect to signals. .."
>
> typos mine.

Just FYI:
http://www.opengroup.org/onlinepubs/007904975/functions/xsh_chap02_04.html#tag_02_04_03

--yoshfuji
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