Compilation failure

[Timon Gehr]

On 07/08/2012 11:47 PM, Lemonfiend wrote:
> Hi,
>
> I seem to have run into a strange error..
> When I put tmp1 outside the main loop, it compiles fine and gives the
> expected output.
> When tmp1 is put inside the main loop, the compiler seems to get stuck
> in a loop?
>
> I've tested it on: http://dlang.org/index.html
>
> See error on bottom (lol)
>
> --------------------
> #!/usr/bin/rdmd
>
> import std.stdio;
>
> //immutable int[] tmp1 = [1, 2]; // compiles
>
> void main()
> {
>     immutable int[] tmp1 = [1, 2]; // does not compile
>
>     int[tmp1.length] tmp2 = tmp1;
>
>     tmp2[] += 1;
>
>     writeln(tmp1);
>     writeln(tmp2);
> }
>
> --------------------
>

I'd argue that this is a bug. The length of an immutable variable with
a constant initializer should be a constant expression.

Presumably this is caused by the compiler rewriting the array literal
into an allocation.