From 4f9083268f2f977c72027d4f63c0186cd703b15a Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Wed, 11 May 2016 21:56:56 +0200
Subject: [PATCH] fixes #4145

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

diff --git a/compiler/ccgtypes.nim b/compiler/ccgtypes.nim
index d4c11c20d7..195417342e 100644
--- a/compiler/ccgtypes.nim
+++ b/compiler/ccgtypes.nim
@@ -570,7 +570,8 @@ proc getTypeDescAux(m: BModule, typ: PType, check: var IntSet): Rope =
   of tyRange, tyEnum:
     let t = if t.kind == tyRange: t.lastSon else: t
     result = getTypeName(t)
-    if isImportedCppType(t): return
+    if isImportedCppType(t) or
+        (sfImportc in t.sym.flags and t.sym.magic == mNone): return
     idTablePut(m.typeCache, t, result)
     var size: int
     if firstOrd(t) < 0: