--- old/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Types.java	2018-07-07 20:00:19.205001000 -0700
+++ new/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Types.java	2018-07-07 20:00:19.073001000 -0700
@@ -89,7 +89,6 @@
     final Symtab syms;
     final JavacMessages messages;
     final Names names;
-    final boolean allowObjectToPrimitiveCast;
     final boolean allowDefaultMethods;
     final boolean mapCapturesToBounds;
     final Check chk;
@@ -113,7 +112,6 @@
         syms = Symtab.instance(context);
         names = Names.instance(context);
         Source source = Source.instance(context);
-        allowObjectToPrimitiveCast = Feature.OBJECT_TO_PRIMITIVE_CAST.allowedInSource(source);
         allowDefaultMethods = Feature.DEFAULT_METHODS.allowedInSource(source);
         mapCapturesToBounds = Feature.MAP_CAPTURES_TO_BOUNDS.allowedInSource(source);
         chk = Check.instance(context);
@@ -1639,8 +1637,7 @@
         if (t.isPrimitive() != s.isPrimitive()) {
             t = skipTypeVars(t, false);
             return (isConvertible(t, s, warn)
-                    || (allowObjectToPrimitiveCast &&
-                        s.isPrimitive() &&
+                    || (s.isPrimitive() &&
                         isSubtype(boxedClass(s).type, t)));
         }
         if (warn != warnStack.head) {