stdlib: Make UnicodeDecodingResult fixed-layout

slavapestov · slavapestov · commit af8d13e9d3b1 · 2016-10-24T02:16:20.000-07:00
diff --git a/stdlib/public/core/Unicode.swift b/stdlib/public/core/Unicode.swift
@@ -22,6 +22,7 @@ import SwiftShims
 /// of a decoding error.
 /// 
 /// - SeeAlso: `UnicodeCodec.decode(next:)`
+@_fixed_layout
 public enum UnicodeDecodingResult : Equatable {
   /// A decoded Unicode scalar value.
   case scalarValue(UnicodeScalar)
