Re: [GIT] Networking

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From	Linus Torvalds <torvalds@linux-foundation.org>
Newsgroups	linux.kernel
Subject	Re: [GIT] Networking
Date	Thu, 03 Sep 2015 21:50:02 +0200
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On Thu, Sep 3, 2015 at 12:32 PM, Julia Lawall <julia.lawall@lip6.fr> 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)

                  Linus
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Thread

Re: [GIT] Networking Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-03 18:50 +0200
  Re: [GIT] Networking David Miller <davem@davemloft.net> - 2015-09-03 19:50 +0200
    Re: [GIT] Networking Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-03 20:30 +0200
      Re: [GIT] Networking Joe Perches <joe@perches.com> - 2015-09-03 20:40 +0200
        Re: [GIT] Networking Julia Lawall <julia.lawall@lip6.fr> - 2015-09-03 21:40 +0200
          Re: [GIT] Networking Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-03 21:50 +0200
            Re: [GIT] Networking Julia Lawall <julia.lawall@lip6.fr> - 2015-09-03 23:00 +0200
              Re: [GIT] Networking Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-03 23:10 +0200
                Re: [GIT] Networking Julia Lawall <julia.lawall@lip6.fr> - 2015-09-03 23:30 +0200
      Re: [GIT] Networking Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-03 20:40 +0200
        Re: [GIT] Networking Marcel Holtmann <marcel@holtmann.org> - 2015-09-03 23:10 +0200
          RE: [GIT] Networking David Laight <David.Laight@ACULAB.COM> - 2015-09-04 11:10 +0200
            Re: [GIT] Networking "Rustad, Mark D" <mark.d.rustad@intel.com> - 2015-09-04 19:40 +0200
      Re: [GIT] Networking David Miller <davem@davemloft.net> - 2015-09-03 20:50 +0200
  Re: [GIT] Networking Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> - 2015-09-05 18:20 +0200

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