From 0824fdd06100282a853fa50efb66e2161f4235d8 Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Fri, 5 Jun 2020 16:15:13 +0200
Subject: [PATCH] fixes #14562

---
 compiler/semcall.nim | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/compiler/semcall.nim b/compiler/semcall.nim
index c6e12facf4..665eb4ea45 100644
--- a/compiler/semcall.nim
+++ b/compiler/semcall.nim
@@ -527,7 +527,10 @@ proc semResolvedCall(c: PContext, x: TCandidate,
       for s in instantiateGenericParamList(c, gp, x.bindings):
         case s.kind
         of skConst:
-          x.call.add s.ast
+          if not s.ast.isNil:
+            x.call.add s.ast
+          else:
+            x.call.add c.graph.emptyNode
         of skType:
           x.call.add newSymNode(s, n.info)
         else: