Found several minor thigns wrong with checkSens...

Found several minor thigns wrong with checkSensible, which tries to
issue warnings for comparisons which will always be true or false. No
review.

1 files changed, 7 insertions, 1 deletions

diff --git a/src/compiler/scala/tools/nsc/symtab/Definitions.scala b/src/compiler/scala/tools/nsc/symtab/Definitions.scala
index 5a4fa51899..12a91a2a8c 100644
--- a/src/compiler/scala/tools/nsc/symtab/Definitions.scala
+++ b/src/compiler/scala/tools/nsc/symtab/Definitions.scala
@@ -801,11 +801,17 @@ trait Definitions extends reflect.generic.StandardDefinitions {
     def isValueClass(sym: Symbol): Boolean =
       (sym eq UnitClass) || (boxedClass contains sym)
 
+    /** If symbol is a value class or a boxed value class, return the value class: otherwise NoSymbol. */
+    def unboxedValueClass(sym: Symbol): Symbol =
+      if (isValueClass(sym)) sym
+      else if (sym == BoxedUnitClass) sym
+      else boxedClass.map(_.swap).getOrElse(sym, NoSymbol)
+
     /** Is symbol a numeric value class? */
     def isNumericValueClass(sym: Symbol): Boolean =
       numericWeight contains sym
 
-    /** Is symbol a numeric value class? */
+    /** Is type's symbol a numeric value class? */
     def isNumericValueType(tp: Type): Boolean = tp match {
       case TypeRef(_, sym, _) => isNumericValueClass(sym)
       case _ => false