Re: [GIT] Networking

From: Linus Torvalds
Date: Thu Sep 03 2015 - 15:48:24 EST

On Thu, Sep 3, 2015 at 12:32 PM, Julia Lawall <julia.lawall@xxxxxxx> wrote:
> I find 518 occurrences of a function parameter declaration that contains
> an explicit size. But only the sizeof(mcs_mask) where there is a sizeof
> on such a parameter. I also checked for ARRAY_SIZE on such parameters,
> and didn't find any occurrences of that either.

Are there any cases of multi-dimensional arrays? Because those
actually have semantic meaning outside of sizeof(), just in things
like adding offsets.

Eg something like

int fn(int a[][10])

ends up being equivalent to something like

int fn(int (*a)[10])

and "a+1" is actually 40 bytes ahead of "a", so it does *not* act like
an "int *".

(And I might have screwed that up mightily - C multidimensional arrays
and the conversions to pointers are really easy to get confused about.
Which is why I hope we don't have them)

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