final switch problem

[John Chapman]

If I use a final switch and import std.uni (or any other module 
that imports it, such as std.string), I'm getting unresolved 
external symbol errors with DMD 2.092.

This code triggers the issue:

---
module test;

import std.uni;

enum Cheese { cheddar, edam }

void test(Cheese cheese) {
   final switch (cheese) {
   case Cheese.cheddar: break;
   case Cheese.edam: break;
   }
}

void main() {
   test(Cheese.cheddar);
}
---

error LNK2019: unresolved external symbol "pure nothrow @nogc 
@safe void 
core.internal.switch_.__switch_error!().__switch_error(immutable(char)[], ulong)" (_D4core8internal7switch___T14__switch_errorZQrFNaNbNiNfAyamZv) referenced in function _Dmain

If I remove "final" and add a default case, it compiles fine. Is 
this a bug or have I made a mistake? This worked a few days ago 
and I haven't changed my setup since then.