whats happening to my binary file size?

[Israel via Digitalmars-d-learn]

On Wednesday, 27 August 2014 at 01:41:51 UTC, Messenger wrote:
> On Tuesday, 26 August 2014 at 23:36:44 UTC, Israel wrote:
>> I wasnt paying any attention to the file size of my binaries 
>> when
>> i started using D.
>>
>> My first program is simple and compiles at 486kb, which 
>> honestly,
>> is kind of absurd but anyways, after i start adding other 
>> imports
>> it ran all the way up to 4.5mb.
>>
>> what i want to ask is, what exactly is happening to my binary
>> when all i do is import various modules?
>
> Conjecture: your binary has its imports statically linked in, 
> and your linker doesn't remove unused code (--gc-sections).
>
> https://issues.dlang.org/show_bug.cgi?id=879

I see, thanks man. From what i understand is that this is a
"unintended" "feature" rather than a direct bug in order to make
my life easier?

I know that object files are stored in .a libraries but all this
seems too advanced for me to understand...