---

yaml
---
r: 347637
b: refs/heads/master
c: 6e4aa24
h: refs/heads/master
i:
  347635: 4afd435

Author: swift-ci

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 76e02b6b4413b47c3c60ec035727b5d50bc97651
+refs/heads/master: 6e4aa2491ceac93132a12ebdbc426742618bd680
 refs/heads/master-next: 203b3026584ecad859eb328b2e12490099409cd5
 refs/tags/osx-passed: b6b74147ef8a386f532cf9357a1bde006e552c54
 refs/tags/swift-2.2-SNAPSHOT-2015-12-01-a: 6bb18e013c2284f2b45f5f84f2df2887dc0f7dea

trunk/stdlib/public/Darwin/Foundation/NSStringAPI.swift

@@ -800,9 +800,14 @@ extension StringProtocol where Index == String.Index {
     using encoding: String.Encoding,
     allowLossyConversion: Bool = false
   ) -> Data? {
-    return _ns.data(
-      using: encoding.rawValue,
-      allowLossyConversion: allowLossyConversion)
+    switch encoding {
+    case .utf8:
+      return Data(self.utf8)
+    default:
+      return _ns.data(
+        using: encoding.rawValue,
+        allowLossyConversion: allowLossyConversion)
+    }
   }
 
   // @property NSString* decomposedStringWithCanonicalMapping;