Re: [Qemu-devel] Static analysis using clang on the x86_64 target

[Blue Swirl <blauwirbel@gmail.com>]

On Wed, Jan 13, 2010 at 7:02 AM, Amit Shah <amit.shah@redhat.com> wrote:
> On (Tue) Jan 12 2010 [19:35:08], Blue Swirl wrote:
>> On Tue, Jan 12, 2010 at 6:13 PM, Amit Shah <amit.shah@redhat.com> wrote:
>> > Hello,
>> >
>> > Here's a run of the clang analyzer on qemu sources for the x86_64
>> > target.
>> >
>> > See
>> >
>> > http://amitshah.fedorapeople.org/clang-output/2010-01-12-9/
>> >
>> > for the results.
>> >
>> > There are a few results there which look dubious but a lot of the output
>> > can be useful to fix the bugs.
>> >
>> > What's nice about the tool is that the output is the source code
>> > annotated with the branch decisions that were taken to point out to the
>> > case where a bug would be triggered.
>> >
>> > Doing this for all the targets takes a really long time plus lots of
>> > disk space (I stopped the compile at 400M of clang output).
>> >
>> > If there's interest in this kind of result, I can post a link to the
>> > list every week or so. However, some bugs reported make it slightly less
>> > appealing as real bugs could get lost in the noise.
>>
>> I'd be very interested in the results of Sparc32 and Sparc64 analyses.
>
> OK, I added the two targets to the run and got the following result:
>
> http://amitshah.fedorapeople.org/clang-output/2010-01-13-1/
>
> The bug count went up from 95 for just x86-64 to 131.
>
> However, a lot of these are dups as files get recompiled for each
> target.

Thanks. I fixed the warnings related to Sparc32. Were there really no
new warnings for Sparc64?