fixes #11479 (#11641)

compiler/types.nim

@@ -168,7 +168,7 @@ proc iterOverTypeAux(marker: var IntSet, t: PType, iter: TTypeIter,
       for i in 0 ..< sonsLen(t):
         result = iterOverTypeAux(marker, t.sons[i], iter, closure)
         if result: return
-      if t.n != nil: result = iterOverNode(marker, t.n, iter, closure)
+      if t.n != nil and t.kind != tyProc: result = iterOverNode(marker, t.n, iter, closure)
 
 proc iterOverType(t: PType, iter: TTypeIter, closure: RootRef): bool =
   var marker = initIntSet()

tests/types/tyet_another_generic_regression.nim

@@ -1,3 +1,7 @@
+discard """
+  output: ''''''
+"""
+
 import system
 
 type Bar[T] = ref object
@@ -11,3 +15,18 @@ proc Foo[T: Bar[types]](): T =
 
 discard Foo[Bar[int32]]()
 #bug #6073
+
+# bug #11479
+
+import tables
+
+proc test() =
+  discard readfile("temp.nim")
+  echo "ho"
+
+const
+  map = {
+    "test": test,
+  }.toTable
+
+#map["test"]()