---

yaml
---
r: 81821
b: refs/heads/master
c: 7535479
h: refs/heads/master
i:
  81819: 1c72b04
v: v3

Author: bors

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: b6fe27c9abc9f279e8b41b1760de694e9bdb9430
+refs/heads/master: 753547963340cb973210ad2df5590c29bf46ddf1
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 6c08cc2db4f98e9f07ae7d50338396c4123c2f0a
 refs/heads/try: 70152ff55722878cde684ee6462c14c65f2c4729

trunk/src/librustc/middle/typeck/check/_match.rs

@@ -37,12 +37,12 @@ pub fn check_match(fcx: @mut FnCtxt,
     // Typecheck the patterns first, so that we get types for all the
     // bindings.
     for arm in arms.iter() {
-        let pcx = pat_ctxt {
+        let mut pcx = pat_ctxt {
             fcx: fcx,
             map: pat_id_map(tcx.def_map, arm.pats[0]),
         };
 
-        for p in arm.pats.iter() { check_pat(&pcx, *p, discrim_ty);}
+        for p in arm.pats.iter() { check_pat(&mut pcx, *p, discrim_ty);}
     }
 
     // The result of the match is the common supertype of all the