From ab99bdfc408e56a2e8a1a3ada21effe983433851 Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Sun, 13 Jan 2019 14:56:50 +0100
Subject: fixes #10136

---
 compiler/semexprs.nim | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'compiler')

diff --git a/compiler/semexprs.nim b/compiler/semexprs.nim
index 8852cb653..657df36dd 100644
--- a/compiler/semexprs.nim
+++ b/compiler/semexprs.nim
@@ -403,8 +403,8 @@ proc semIs(c: PContext, n: PNode, flags: TExprFlags): PNode =
       n[1] = makeTypeSymNode(c, lhsType, n[1].info)
       lhsType = n[1].typ
   else:
-    internalAssert c.config, lhsType.base.kind != tyNone
-    if c.inGenericContext > 0 and lhsType.base.containsGenericType:
+    if lhsType.base.kind == tyNone or
+        (c.inGenericContext > 0 and lhsType.base.containsGenericType):
       # BUGFIX: don't evaluate this too early: ``T is void``
       return
 
-- 
cgit 1.4.1-2-gfad0