382 – Critical "Previous definition different" bug

Steps to reproduce:
1. Create 2 files (Site.d and Tools.d):
[Site.d]
module Site;
import Tools;
void test(List!(char) list) {}
[Tools.d]
module Tools;
struct List(T) {
	interface A {}
}
int main(char[][] args) {
	List!(char) list;
	return 0;
}
2. Now compile using the following commands:
# dmd.exe -c Site.d
# dmd.exe -c Tools.d
# dmd.exe bug.exe Site.obj Tools.obj
... should report error "Previous definition different"
I market this bug as blocker, because I know of no workaround (at least one that would work with compiling files one by one).

So the error message is just "Previous definition different" with no indication of what or where???

Full compiler output:
# dmd.exe -v -c Site.d
parse Site
semantic Site
semantic2 Site
semantic3 Site
code Site
generating code for function 'test'
# dmd.exe -v -c Tools.d
parse Tools
semantic Tools
semantic2 Tools
semantic3 Tools
code Tools
generating code for function 'main'
# dmd.exe -v bug.exe Site.obj Tools.obj
C:\Home\Programs\D\dmd\bin\..\..\dm\bin\link.exe Site+Tools,Bug.exe,,user32+kernel32/noi;
OPTLINK (R) for Win32 Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001 All Rights Reserved
 
Tools.obj(Tools) Offset 00178H Record Type 0091 
 Error 1: Previous Definition Different : __Interface_5Tools11__T4ListTaZ4List1A
--- errorlevel 1

Fixed DMD 0.169