patch applied (packages/array): Improve the index checking for array accesses; fixes #2120 #2669

[Simon Marlow]

On 19/07/2009 16:59, Ian Lynagh wrote:
> Sun Jul 19 08:29:31 PDT 2009  Ian Lynagh<igloo at earth.li>
>    * Improve the index checking for array accesses; fixes #2120 #2669
>    As well as checking that offset we are reading is actually inside the
>    array, we now also check that it is "in range" as defined by the Ix
>    instance. This fixes confusing behaviour (#2120) and improves some error
>    messages (#2669).

Does the extra test get optimised away in the common case?

Cheers,
	Simon