From ac1a753aff0324caf6214fe76094136d04faac3d Mon Sep 17 00:00:00 2001
From: Andreas Rumpf <rumpf_a@web.de>
Date: Wed, 11 May 2016 21:20:53 +0200
Subject: fixes #3956

---
 compiler/vmgen.nim | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'compiler/vmgen.nim')

diff --git a/compiler/vmgen.nim b/compiler/vmgen.nim
index 019c79eb3..bd32ccc17 100644
--- a/compiler/vmgen.nim
+++ b/compiler/vmgen.nim
@@ -1337,10 +1337,11 @@ proc genGlobalInit(c: PCtx; n: PNode; s: PSym) =
   #   var decls{.compileTime.}: seq[NimNode] = @[]
   let dest = c.getTemp(s.typ)
   c.gABx(n, opcLdGlobal, dest, s.position)
-  let tmp = c.genx(s.ast)
-  c.preventFalseAlias(n, opcWrDeref, dest, 0, tmp)
-  c.freeTemp(dest)
-  c.freeTemp(tmp)
+  if s.ast != nil:
+    let tmp = c.genx(s.ast)
+    c.preventFalseAlias(n, opcWrDeref, dest, 0, tmp)
+    c.freeTemp(dest)
+    c.freeTemp(tmp)
 
 proc genRdVar(c: PCtx; n: PNode; dest: var TDest; flags: TGenFlags) =
   let s = n.sym
-- 
cgit 1.4.1-2-gfad0