fixes #2346

tests/metatype/udtcmanual.nim

@@ -1,43 +0,0 @@
-discard """
-  output: '''1
-2
-3
-4
-5
-6
-a
-b
-t
-e
-s
-t
-'''
-"""
-
-template accept(e: expr) =
-  static: assert compiles(e)
-
-template reject(e: expr) =
-  static: assert(not compiles(e))
-
-type
-  Container[T] = generic C
-    C.len is Ordinal
-    items(c) is iterator
-    for value in C:
-      type(value) is T
-
-proc takesIntContainer(c: Container[int]) =
-  for e in c: echo e
-
-takesIntContainer(@[1, 2, 3])
-reject takesIntContainer(@["x", "y"])
-
-proc takesContainer(c: Container) =
-  for e in c: echo e
-
-takesContainer(@[4, 5, 6])
-takesContainer(@["a", "b"])
-takesContainer "test"
-reject takesContainer(10)
-