Cconditional expression in return statement. Bug?

[kinke via Digitalmars-d-learn]

On Tuesday, 7 March 2017 at 14:26:18 UTC, Jack Applegame wrote:
> I'm pretty sure this is a bug. And very bad bug. I spent 
> several hours looking for it.
> What do you think?

Definitely a very bad bug. It works too if you mark `fun()` as 
nothrow. Please file a DMD issue.