DMD producing huge binaries

[Kagamin via Digitalmars-d]

On Saturday, 21 May 2016 at 18:18:21 UTC, Andrei Alexandrescu 
wrote:
> He said that that won't happen any longer, the growth was 
> because of the return type. Is that correct?

https://issues.dlang.org/show_bug.cgi?id=15831#c4
Looks like growth is due to the fact that the voldemort type is 
in the scope of a function and function is fun!(T).fun(T) - hence 
each level multiplies by 2. And return type is not part of the 
mangled name already - that would cause circular dependency, you 
would need the voldemort type mangling to generate it.