Messages in this thread | | | Date | Wed, 12 Sep 2012 12:10:55 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v2] lib: gcd: prevent possible div by 0 |
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On Mon, 10 Sep 2012 16:35:19 +0200 Davidlohr Bueso <dave@gnu.org> wrote:
> Account for all properties when a and/or b are 0: > gcd(0, 0) = 0 > gcd(a, 0) = a > gcd(0, b) = b > > Cc: stable@vger.kernel.org
Why cc:stable? If this patch fixes some known problem in the current kernel then that really really should have been described in the changelog. Always. Please.
> ... > --- a/lib/gcd.c > +++ b/lib/gcd.c > @@ -9,6 +9,9 @@ unsigned long gcd(unsigned long a, unsigned long b) > > if (a < b) > swap(a, b); > + > + if (!b) > + return a; > while ((r = a % b) != 0) { > a = b; > b = r; > -- > 1.7.9.5 > >
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