---

yaml
---
r: 23370
b: refs/heads/master
c: 9b489f6
h: refs/heads/master
v: v3

Author: bblum

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 8694ef6fb3191dac441626b5dc45a238e4be9c49
+refs/heads/master: 9b489f6fff4aa07bea2db9457ece5f77c211e016
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: cd6f24f9d14ac90d167386a56e7a6ac1f0318195
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be

trunk/src/rustc/middle/check_alt.rs

@@ -420,6 +420,7 @@ fn is_refutable(tcx: ty::ctxt, pat: @pat) -> bool {
         is_refutable(tcx, sub)
       }
       pat_wild | pat_ident(_, _, none) => { false }
+      pat_lit(@{node: expr_lit(@{node: lit_nil, _}), _}) => { false } // "()"
       pat_lit(_) | pat_range(_, _) => { true }
       pat_rec(fields, _) => {
         for fields.each |it| {

trunk/src/test/run-pass/irrefutable-unit.rs

@@ -0,0 +1,3 @@
+fn main() {
+    let ((),()) = ((),());
+}