From 8c81cddf7e22e21b35b68b7dc62f90b782c36889 Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Wed, 11 Sep 2019 20:01:09 +0200
Subject: [PATCH] fixes #12170 (#12176)

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

diff --git a/compiler/semfold.nim b/compiler/semfold.nim
index 3f9211e56b..5ba9c92baf 100644
--- a/compiler/semfold.nim
+++ b/compiler/semfold.nim
@@ -430,8 +430,8 @@ proc rangeCheck(n: PNode, value: Int128; g: ModuleGraph) =
                                     " to " & typeToString(n.typ))
 
 proc foldConv(n, a: PNode; g: ModuleGraph; check = false): PNode =
-  let dstTyp = skipTypes(n.typ, abstractRange)
-  let srcTyp = skipTypes(a.typ, abstractRange)
+  let dstTyp = skipTypes(n.typ, abstractRange - {tyTypeDesc})
+  let srcTyp = skipTypes(a.typ, abstractRange - {tyTypeDesc})
 
 
   # if srcTyp.kind == tyUInt64 and "FFFFFF" in $n: