[Bug c/81631] -Wcast-qual false positive for pointer to array

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81631

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This is

void
baz (const int *y)
{
  const int (*x)[6];
  x = (const int (*)[6]) y;
}

ISO C11 says "If the specification of an array type includes any type qualifiers,
the element type is so-qualified, not the array type." so the compiler sees
pointer-to-const being casted to pointer-to-array-of-const-ints.  But you can't
assign to an array anyway so perhaps it makes sense to not warn in this case.