makeIndex not working

[Johann MacDonagh]

On 7/2/2011 9:00 PM, bearophile wrote:
> Johann MacDonagh:
>
>> I'm confused, what am I doing wrong here?
>
> I think that Phobos needs way more&better unittests.
>
> I think the error you receive reduces to this:
>
> import std.range: isForwardRange;
>
> void foo(R)(R r) if (isForwardRange!R) {}
>
> void main() {
>       immutable arr = [1, 2];
>       foo(arr);
> }
>
> Bye,
> bearophile

Strangely enough there is a unit test for this...
https://github.com/D-Programming-Language/phobos/blob/phobos-2.053/std/algorithm.d#L6742

Does this code fail to compile for you too? I want to make sure I didn't 
mess up my config here.