Calls to struct methods and immutable

[Joseph Rushton Wakeling]

On 11/15/2012 06:40 PM, Ali Çehreli wrote:
> b) The user wants to play safe:
>
> auto makeFoo()
> {
>      Foo foo;
>      foreach (i; 0..10)
>          foo.add( /* new data point */ );
>      return foo;
> }
>
> void main()
> {
>      immutable foo = makeFoo();
> }
>
> Both of those compile with dmd 2.060.

Really?  I'm using from-GitHub dmd, and with the above example I get a "cannot 
implicitly convert expression to immutable" error, e.g.:

     Error: cannot implicitly convert expression (testSets(nfRaw,0.1L)) of type 
TestData!(ulong,ulong) to immutable(TestData!(ulong,ulong))