[cfe-commits] [cfe-dev] How to fix null-deref-ps.c on FreeBSD?
Ted Kremenek
kremenek at apple.com
Tue Feb 17 09:43:54 PST 2009
On Feb 17, 2009, at 9:37 AM, Ben Laurie wrote:
> On Tue, Feb 17, 2009 at 4:45 PM, Ted Kremenek <kremenek at apple.com>
> wrote:
>> Hi Ben,
>>
>> The analyzer knows that all functions with the 'noreturn' attribute
>> don't
>> return. What does the assert macro expand to on FreeBSD?
>
> The problem is that __assert does not have noreturn set on FreeBSD.
> I'm in the process of getting that fixed - but as an apprentice
> FreeBSD committer that's probably harder for me than anyone else, so
> it may take a while :-)
>
> In the meantime, I think the right answer is for me to patch
> /usr/include/assert.h.
__assert isn't the only "panic" function that isn't marked with
noreturn. Since it occurs so frequently, I can just add it to the
list of hard-coded functions that the analyzer knows about. That will
also make the analyzer more applicable to earlier versions of FreeBSD
(should you want to see how far a bug goes back, for example).
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