isDerivedValueClass: try to avoid causing cyclic references

This fixes the problem showcased in #412.
scala · Mar 19, 2015 · a9fb3ba · a9fb3ba
1 parent 318c685
commit a9fb3ba
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/dotty/tools/dotc/transform/ValueClasses.scala b/src/dotty/tools/dotc/transform/ValueClasses.scala
@@ -14,7 +14,7 @@ object ValueClasses {
 
   def isDerivedValueClass(d: SymDenotation)(implicit ctx: Context) =
     d.isClass &&
-      d.derivesFrom(defn.AnyValClass) &&
+      d.derivesFrom(defn.AnyValClass)(ctx.withPhase(d.initial.validFor.phaseId)) &&
       (d.symbol ne defn.AnyValClass) &&
       !d.isPrimitiveValueClass