Re: Newbie idiotic questions.

From: Daniel Phillips (phillips@bonn-fries.net)
Date: Sun Jun 17 2001 - 05:48:01 EST


On Sunday 17 June 2001 03:32, Jeff Garzik wrote:
> Bill Pringlemeir wrote:
> > Why is the struct type referenced for the allocation size? Why not,
> >
> > if ((card->mpuout = kmalloc(sizeof(card->mpuout), GFP_KERNEL))
>
> because then you would be allocating the size of a pointer, not the size
> of a structure

Whoops Jeff, you didn't have your coffee yet:

        struct foo { int a; int b; };
        struct { struct foo foo; } *foobar;

        int main (void)
        {
                printf("%i\n", sizeof(struct foo));
                printf("%i\n", sizeof(foobar->foo));
                printf("%i\n", sizeof(&foobar->foo));
        }

Prints:

        8
        8
        4

--
Daniel
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This archive was generated by hypermail 2b29 : Sat Jun 23 2001 - 21:00:18 EST