---

yaml
---
r: 326095
b: refs/heads/master-next
c: c31b184
h: refs/heads/master
i:
  326093: 6288b0f
  326091: 2034adc
  326087: 5c584c3
  326079: cc3f99c

Author: theblixguy

[refs]

@@ -1,6 +1,6 @@
 ---
 refs/heads/master: e052da7d8886fa0439677852e8f7830b20c2e1da
-refs/heads/master-next: 54a4615e6f9e5e723ee1a8f933e94e0a9d047248
+refs/heads/master-next: c31b18490754add177d7509b945b0a2b66fe8ad3
 refs/tags/osx-passed: b6b74147ef8a386f532cf9357a1bde006e552c54
 refs/tags/swift-2.2-SNAPSHOT-2015-12-01-a: 6bb18e013c2284f2b45f5f84f2df2887dc0f7dea
 refs/tags/swift-2.2-SNAPSHOT-2015-12-01-b: 66d897bfcf64a82cb9a87f5e663d889189d06d07

branches/master-next/CHANGELOG.md

@@ -63,19 +63,16 @@ Swift Next
   extension Foo where Self: Bar {
     var anotherProperty1: Int {
       get { return someProperty }
-      // 'someProperty' exists as a protocol requirement (implicitly mutating
-      // due to the lack of a class constraint), so the setter below needs to 
-      // be explicitly marked as 'mutating'.
-      set { someProperty = newValue } // Error
-    }
-    
-    var anotherProperty2: Int {
-      get { return someProperty }
-      mutating set { someProperty = newValue } // Okay
+      // This will now error, because the protocol requirement
+      // is implicitly mutating and the setter is implicitly 
+      // nonmutating.
+      set { someProperty = newValue }
     }
   }
   ```
 
+  To resolve this, explicitly mark the setter as `nonmutating` in the protocol.
+
 * [SE-0253][]:
 
   Values of types that declare `func callAsFunction` methods can be called