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Re: Possible unsafe use of strncat in sbin/sysctl/sysctl.c
Am 24.08.11 00:08, schrieb Joerg Sonnenberger:
> On Tue, Aug 23, 2011 at 09:58:53PM +0000, David Holland wrote:
>> On Tue, Aug 23, 2011 at 11:52:11PM +0200, Marc Balmer wrote:
>> > (void)wait! That was a pure personal remark. I really don't know where
>> > that (void)bla idiom comes from, and I obviously don't (void)like it.
>> It's an artifact of our stupid lint(1).
> Not really, it is used by other analyzers to mean "yes, I know this
> returns something, but I don't care". The major exception of course is
> that GCC broke it for the attributed usage -- half of the pain of
> dealing with modern glibc in this regard.
But that is kind of, well, unneeded. A compiler can detect that I don't
use the return value by seeing that I don't use the return value.
Why tell the compiler that I don't want to use the return value? It's a
stupid rule, to say the least.
Next thing will be adding a (really) and (maybe) statement to functions
which we really or maybe want to execute, and maybe (never) for
functions that we never call:
main(int argc, char *argc)
/* NOTREACHED */
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