From 1b4116702b411c82ccec4b558768689b2a1a0964 Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Sun, 2 Aug 2015 02:54:43 +0200
Subject: [PATCH] fixes #3052

---
 compiler/semtypes.nim | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/compiler/semtypes.nim b/compiler/semtypes.nim
index b518f0fb9..3bb1284fc 100644
--- a/compiler/semtypes.nim
+++ b/compiler/semtypes.nim
@@ -23,6 +23,9 @@ proc newConstraint(c: PContext, k: TTypeKind): PType =
 
 proc semEnum(c: PContext, n: PNode, prev: PType): PType =
   if n.sonsLen == 0: return newConstraint(c, tyEnum)
+  elif n.sonsLen == 1:
+    # don't create an empty tyEnum; fixes #3052
+    return errorType(c)
   var
     counter, x: BiggestInt
     e: PSym