From 660cd7ed701c3af5f8b247ee5545d278f6b931da Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Tue, 31 May 2016 20:35:51 +0200
Subject: [PATCH] fixes #3532

---
 compiler/semstmts.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/semstmts.nim b/compiler/semstmts.nim
index 7179e3312f..9615211fc8 100644
--- a/compiler/semstmts.nim
+++ b/compiler/semstmts.nim
@@ -17,7 +17,8 @@ proc semDiscard(c: PContext, n: PNode): PNode =
   checkSonsLen(n, 1)
   if n.sons[0].kind != nkEmpty:
     n.sons[0] = semExprWithType(c, n.sons[0])
-    if isEmptyType(n.sons[0].typ): localError(n.info, errInvalidDiscard)
+    if isEmptyType(n.sons[0].typ) or n.sons[0].typ.kind == tyNone:
+      localError(n.info, errInvalidDiscard)
 
 proc semBreakOrContinue(c: PContext, n: PNode): PNode =
   result = n