Added hashCode implementations to Manifest type...

Added hashCode implementations to Manifest types where necessary. Closes
#2838. No review.

2 files changed, 7 insertions, 0 deletions

diff --git a/src/library/scala/reflect/ClassManifest.scala b/src/library/scala/reflect/ClassManifest.scala
index 58f3c89499..a026d162d1 100644
--- a/src/library/scala/reflect/ClassManifest.scala
+++ b/src/library/scala/reflect/ClassManifest.scala
@@ -82,6 +82,7 @@ trait ClassManifest[T] extends OptManifest[T] {
     case m: ClassManifest[_]  => this.erasure == m.erasure
     case _ => false
   }
+  override def hashCode = this.erasure.hashCode
 
   protected def arrayClass[T](tp: Predef.Class[_]): Predef.Class[Array[T]] =
     java.lang.reflect.Array.newInstance(tp, 0).getClass.asInstanceOf[Predef.Class[Array[T]]]
diff --git a/src/library/scala/reflect/Manifest.scala b/src/library/scala/reflect/Manifest.scala
index 69842e1193..6ca64df67a 100644
--- a/src/library/scala/reflect/Manifest.scala
+++ b/src/library/scala/reflect/Manifest.scala
@@ -39,6 +39,7 @@ trait AnyValManifest[T] extends Manifest[T] {
   import Manifest.{ Any, AnyVal }
   override def <:<(that: ClassManifest[_]): Boolean = (that eq this) || (that eq Any) || (that eq AnyVal)
   override def equals(that: Any): Boolean = this eq that.asInstanceOf[AnyRef]
+  override def hashCode = System.identityHashCode(this)
 }
 
 /** <ps>
@@ -137,6 +138,7 @@ object Manifest {
     override def toString = "Any"
     override def <:<(that: ClassManifest[_]): Boolean = (that eq this)
     override def equals(that: Any): Boolean = this eq that.asInstanceOf[AnyRef]
+    override def hashCode = System.identityHashCode(this)
     private def readResolve(): Any = Manifest.Any
   }
 
@@ -144,6 +146,7 @@ object Manifest {
     override def toString = "Object"
     override def <:<(that: ClassManifest[_]): Boolean = (that eq this) || (that eq Any)
     override def equals(that: Any): Boolean = this eq that.asInstanceOf[AnyRef]
+    override def hashCode = System.identityHashCode(this)
     private def readResolve(): Any = Manifest.Object
   }
 
@@ -151,6 +154,7 @@ object Manifest {
     override def toString = "AnyVal"
     override def <:<(that: ClassManifest[_]): Boolean = (that eq this) || (that eq Any)
     override def equals(that: Any): Boolean = this eq that.asInstanceOf[AnyRef]
+    override def hashCode = System.identityHashCode(this)
     private def readResolve(): Any = Manifest.AnyVal
   }
 
@@ -159,6 +163,7 @@ object Manifest {
     override def <:<(that: ClassManifest[_]): Boolean =
       (that ne null) && (that ne Nothing) && !(that <:< AnyVal)
     override def equals(that: Any): Boolean = this eq that.asInstanceOf[AnyRef]
+    override def hashCode = System.identityHashCode(this)
     private def readResolve(): Any = Manifest.Null
   }
 
@@ -166,6 +171,7 @@ object Manifest {
     override def toString = "Nothing"
     override def <:<(that: ClassManifest[_]): Boolean = (that ne null)
     override def equals(that: Any): Boolean = this eq that.asInstanceOf[AnyRef]
+    override def hashCode = System.identityHashCode(this)
     private def readResolve(): Any = Manifest.Nothing
   }