small bugfix for eval

compiler/evals.nim

@@ -219,7 +219,7 @@ proc getNullValue(typ: PType, info: TLineInfo): PNode =
   var t = skipTypes(typ, abstractRange)
   result = emptyNode
   case t.kind
-  of tyBool, tyChar, tyInt..tyInt64: 
+  of tyBool, tyEnum, tyChar, tyInt..tyInt64: 
     result = newNodeIT(nkIntLit, info, t)
   of tyFloat..tyFloat128: 
     result = newNodeIt(nkFloatLit, info, t)

tests/accept/run/tactiontable.nim

@@ -0,0 +1,27 @@
+discard """
+  output: "action 3 arg"
+"""
+
+import tables
+
+proc action1(arg: string) = 
+  echo "action 1 ", arg
+
+proc action2(arg: string) = 
+  echo "action 2 ", arg
+
+proc action3(arg: string) = 
+  echo "action 3 ", arg
+
+proc action4(arg: string) = 
+  echo "action 4 ", arg
+
+const
+  actionTable = {
+    "A": action1, 
+    "B": action2, 
+    "C": action3, 
+    "D": action4}.toTable
+
+actionTable["C"]("arg")
+