---

yaml
---
r: 29970
b: refs/heads/incoming
c: 9b489f6
h: refs/heads/master
v: v3

Author: bblum

[refs]

@@ -6,7 +6,7 @@ refs/heads/try: d324a424d8f84b1eb049b12cf34182bda91b0024
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: d0c6ce338884ee21843f4b40bf6bf18d222ce5df
-refs/heads/incoming: 8694ef6fb3191dac441626b5dc45a238e4be9c49
+refs/heads/incoming: 9b489f6fff4aa07bea2db9457ece5f77c211e016
 refs/heads/dist-snap: 2f32a1581f522e524009138b33b1c7049ced668d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/incoming/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| {

branches/incoming/src/test/run-pass/irrefutable-unit.rs

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