Stripping Data Symbols (Win64)

[Benjamin Thaut via Digitalmars-d]

My current work on the D compiler lead me to the following test 
case which I put through a unmodified version of dmd 2.069.2

import core.stdc.stdio;

struct UnusedStruct
{
	int i = 3;
	float f = 4.0f;
};

class UnusedClass
{
	int i = 2;
	float f = 5.0f;
};

void main(string[] args)
{
   printf("Hello World!");
}

When compiling this on windows with dmd -m64 main.d -L/MAP
and then inspecting the map file I noticed that the following 4 
data symbols end up in the final executable although they 
shouldn't be used.

  0003:00000a90       _D4main12UnusedStruct6__initZ 
0000000140046a90     main.obj
  0003:00000ad0       _D4main11UnusedClass6__initZ 
0000000140046ad0     main.obj
  0003:00000af0       _D4main11UnusedClass7__ClassZ 
0000000140046af0     main.obj
  0003:00000ba0       _D4main11UnusedClass6__vtblZ 
0000000140046ba0     main.obj

For the struct this is the initializer, for the class its the 
initializer, class info and vtbl.

Is this behavior correct? Shouldn't UnusedStruct and UnusedClass 
be stripped completely from the binary? Is this somehow connected 
to the module info / object.factory?

I noticed by looking at some object file dumps that dmd puts each 
function into its own section, but data symbols, like 
initializers, are all merged into the same section. Could this be 
the root issue?