--- old/src/java.base/share/classes/sun/nio/cs/UTF_8.java	2015-10-30 14:03:50.941307276 -0700
+++ new/src/java.base/share/classes/sun/nio/cs/UTF_8.java	2015-10-30 14:03:50.701308184 -0700
@@ -549,6 +549,10 @@
             }
             return dp;
         }
+
+        public boolean isASCIICompatible() {
+            return true;
+        }
     }
 
     private static final class Encoder extends CharsetEncoder
@@ -742,5 +746,9 @@
             }
             return dp;
         }
+
+        public boolean isASCIICompatible() {
+            return true;
+        }
     }
 }