Re: [RFC 1/2] compiler: use compiler to detect integer overflows

[Dan Carpenter]

On Wed, Nov 26, 2014 at 10:58:43AM -0800, Linus Torvalds wrote:
> I don't think coccinelle can do signedness checks, though, especially
> of the kind that are hidden deep behind some typedef like "loff_t".
> Maybe I'm wrong. Maybe smatch can? Adding Dan Carpenter to the cc..
> 

Smatch knows about datatypes and signedness.

I've written a bunch of integer overflow checks and found some bugs but
the tests have always had too many false positives to publish.  I'll
take a closer look at this next week.

regards,
dan carpenter

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