Lazy param with nothrow

[Nemo via Digitalmars-d-learn]

On Tuesday, 1 March 2016 at 13:35:08 UTC, Andrea Fontana wrote:
> This very very simple function [1] won't compile.
> It says that param t is not nothrow. Why? What's wrong with 
> this?
>
> http://dpaste.dzfl.pl/bfc382e62711

writeln isn't nothrow so you can't call it from test which is 
nothrow without a try .. catch.
The error message is misleading.