Builderreflectionfix (#515)

* change builder for bundle reflection fix

* fixed bug -- should be not assignable

1 files changed, 1 insertions, 1 deletions

diff --git a/chiselFrontend/src/main/scala/chisel3/internal/Builder.scala b/chiselFrontend/src/main/scala/chisel3/internal/Builder.scala
index e6e69e03..147fa7d4 100644
--- a/chiselFrontend/src/main/scala/chisel3/internal/Builder.scala
+++ b/chiselFrontend/src/main/scala/chisel3/internal/Builder.scala
@@ -136,7 +136,7 @@ private[chisel3] trait HasId extends InstanceId {
     }
     val valNames = getValNames(this.getClass)
     def isPublicVal(m: java.lang.reflect.Method) =
-      m.getParameterTypes.isEmpty && valNames.contains(m.getName)
+      m.getParameterTypes.isEmpty && valNames.contains(m.getName) && !m.getDeclaringClass.isAssignableFrom(rootClass)
     this.getClass.getMethods.sortWith(_.getName < _.getName).filter(isPublicVal(_))
   }
 }