From e33ff5cb084626f8f2189d978cca3c96d8a8f9a3 Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Thu, 8 Aug 2019 23:09:10 +0200
Subject: [PATCH] merged #11813 manually [bugfix]

(cherry picked from commit 3b8f7214603b7d7df2ecf38974997517222ac6f0)
---
 compiler/semexprs.nim | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler/semexprs.nim b/compiler/semexprs.nim
index 4e28f5fe58..5b08c74ca8 100644
--- a/compiler/semexprs.nim
+++ b/compiler/semexprs.nim
@@ -2438,6 +2438,7 @@ proc semExportExcept(c: PContext, n: PNode): PNode =
       strTableAdd(c.module.tab, s)
       result.add newSymNode(s, n.info)
     s = nextIter(i, exported.tab)
+  markUsed(c, n.info, exported)
 
 proc semExport(c: PContext, n: PNode): PNode =
   result = newNodeI(nkExportStmt, n.info)