From c3d147eea60c891823e7e1c21003c392654a633b Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Fri, 7 Aug 2015 15:23:00 +0200
Subject: [PATCH] Add a guard example for E0416

---
 src/librustc_resolve/diagnostics.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/librustc_resolve/diagnostics.rs b/src/librustc_resolve/diagnostics.rs
index 5fe1e286917..b758260ac2b 100644
--- a/src/librustc_resolve/diagnostics.rs
+++ b/src/librustc_resolve/diagnostics.rs
@@ -494,6 +494,15 @@ match (1, 2) {
     (x, y) => {} // ok!
 }
 ```
+
+Or maybe did you mean to unify? Consider using a guard:
+
+```
+match (A, B, C) {
+    (x, x2, see) if x == x2 => { /* A and B are equal, do one thing */ }
+    (y, z, see) => { /* A and B unequal; do another thing */ }
+}
+```
 "##,
 
 E0417: r##"