From 30b56ed7e7c51a73ebfee8fdcfc13c9579eddcbf Mon Sep 17 00:00:00 2001
From: Guillaume Martres <smarter@ubuntu.com>
Date: Thu, 5 Mar 2015 20:50:58 +0100
Subject: [PATCH] AnyVal is not a derived value class

---
 src/dotty/tools/dotc/transform/ValueClasses.scala | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/dotty/tools/dotc/transform/ValueClasses.scala b/src/dotty/tools/dotc/transform/ValueClasses.scala
index c5cf44552bbf..2d44ed8269b1 100644
--- a/src/dotty/tools/dotc/transform/ValueClasses.scala
+++ b/src/dotty/tools/dotc/transform/ValueClasses.scala
@@ -12,7 +12,10 @@ import Flags._
 object ValueClasses {
 
   def isDerivedValueClass(d: SymDenotation)(implicit ctx: Context) =
-    d.isClass && d.derivesFrom(defn.AnyValClass) && !d.isPrimitiveValueClass
+    d.isClass &&
+      (d.symbol ne defn.AnyValClass) &&
+      d.derivesFrom(defn.AnyValClass) &&
+      !d.isPrimitiveValueClass
 
   def isMethodWithExtension(d: SymDenotation)(implicit ctx: Context) =
     d.isSourceMethod &&