Calling malloc from a signal handler
deischen at freebsd.org
Fri Sep 19 16:40:30 UTC 2008
On Fri, 19 Sep 2008, Stephen Montgomery-Smith wrote:
> I notice that if you use "malloc" from within a signal handler on
> FreeBSD-6.x, that you can potentially trigger a "recursive call" error.
> But this seems to have changed in FreeBSD-7.x.
> Is it now permissible to call "malloc" from within a signal handler in
> If so, should the man page of "sigaction(2)" be upgraded to say this?
You shouldn't call malloc() or any other function that
isn't async-signal-safe from a signal handler. I don't
think we should say if it works or not, since it is
not portable and could change at any given time in
future versions of FreeBSD.
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