Messages in this thread | | | Date | Tue, 4 Jun 2019 10:57:14 +0100 | From | Dave Martin <> | Subject | Re: [PATCH] KVM: arm64: Drop 'const' from argument of vq_present() |
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On Tue, Jun 04, 2019 at 03:01:53PM +0530, Viresh Kumar wrote: > On 04-06-19, 10:26, Dave Martin wrote: > > I'm in two minds about whether this is worth fixing, but if you want to > > post a patch to remove the extra const (or convert vq_present() to a > > macro), I'll take a look at it. > > This patch already does what you are asking for (remove the extra > const), isn't it ?
Yes, sorry -- I didn't scroll back far enough.
> I looked at my textbook (The C programming Language, By Brian W. > Kernighan and Dennis M. Ritchie.) and it says: > > " > The const declaration can also be used with array arguments, to > indicate that the function does not change that array: > > int strlen(const char[]); > " > > and so this patch isn't necessary for sure.
This is an array to which a pointer argument points, not an array argument. I think that's how we hit the constified double-indirection problem.
Cheers ---Dave
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