Warning when using const pointer to fixed size array

[Sergei Organov]

Aaron Rocha <hxdg21@yahoo.com> writes:
[...]
> This is ok if you are working with buffers that may vary in size. But if
> your buffers have a fixed size, wouldn't it be better to do this?
>
> void foo(const int (* p)[9]);

$ cat array.c
void foo(const int (* p)[9]);
void boo(const int p[9]);
int main()
{
  int array[9];
  foo(&array);
  boo(array);
  return 0;
}
$ gcc -c -W -Wall array.c
array.c: In function ‘main’:
array.c:6: warning: passing argument 1 of ‘foo’ from incompatible pointer type
$

You see? Use the second, simpler declaration, and you are OK.

-- Sergei.